COVER PAGE - USD ($)	12 Months Ended
COVER PAGE - USD ($)	Mar. 31, 2026	May 07, 2026	Sep. 30, 2025
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Mar. 31, 2026
Current Fiscal Year End Date	--03-31
Document Transition Report	false
Entity File Number	0-29174
Entity Registrant Name	LOGITECH INTERNATIONAL S.A.
Entity Incorporation, State or Country Code	V8
Entity Address, Address Line One	1015 Lausanne
Entity Address, Country	CH
Entity Address, Address Line Two	c/o Logitech Inc.
Entity Address, Address Line Three	3930 North First Street
Entity Address, City or Town	San Jose
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	95134
City Area Code	510
Local Phone Number	795-8500
Title of 12(b) Security	Registered Shares
Trading Symbol	LOGI
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Document Financial Statement Error Correction [Flag]	false
Entity Shell Company	false
Entity Public Float			$ 15,881,278,174
Entity Common Stock, Shares Outstanding		143,535,585
Documents Incorporated by Reference	Portions of the registrant's Proxy Statement for the 2026 Annual Meeting of Shareholders are incorporated herein by reference in Part III of this Annual Report on Form 10-K to the extent stated herein.
Entity Central Index Key	0001032975
Amendment Flag	false
Document Fiscal Year Focus	2026
Document Fiscal Period Focus	FY

Audit Information	12 Months Ended
Audit Information	Mar. 31, 2026
Audit Information [Abstract]
Auditor Firm ID	185
Auditor Name	KPMG LLP
Auditor Location	San Francisco, California

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2024
Income Statement [Abstract]
Net sales	$ 4,840,761	$ 4,554,900	$ 4,298,467
Cost of goods sold	2,742,407	2,582,745	2,509,418
Amortization of intangible assets	7,017	9,554	11,028
Gross profit	2,091,337	1,962,601	1,778,021
Operating expenses:
Marketing and selling	816,604	814,414	730,310
Research and development	316,221	309,008	287,243
General and administrative	167,160	164,014	155,056
Amortization of intangible assets and acquisition-related costs	6,298	10,695	10,934
Impairment of intangible assets	0	0	3,526
Change in fair value of contingent consideration for business acquisition	0	0	(250)
Restructuring charges, net	9,860	9,615	3,866
Total operating expenses	1,316,143	1,307,746	1,190,685
Operating income	775,194	654,855	587,336
Interest income	48,246	54,997	50,636
Other income (expense), net	3,079	(2,980)	(16,376)
Income before income taxes	826,519	706,872	621,596
Provision for income taxes	115,332	75,343	9,453
Net income	$ 711,187	$ 631,529	$ 612,143
Net income per share:
Basic (in dollars per share)	$ 4.85	$ 4.17	$ 3.90
Diluted (in dollars per share)	$ 4.80	$ 4.13	$ 3.87
Weighted average shares used to compute net income per share:
Basic (in shares)	146,775	151,322	156,776
Diluted (in shares)	148,208	152,784	158,171

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2024
Statement of Comprehensive Income [Abstract]
Net income	$ 711,187	$ 631,529	$ 612,143
Currency translation gain (loss):
Currency translation gain (loss)	24,496	(14,705)	(3,078)
Defined benefit plans:
Net gain (loss) and prior service costs, net of taxes	3,271	(17,640)	(13,163)
Reclassification of amortization included in other income (expense), net	261	759	243
Hedging gain (loss):
Deferred hedging gain (loss), net of taxes	(8,214)	(703)	1,109
Reclassification of hedging loss (gain) included in cost of goods sold	13,321	(3,461)	3,964
Total other comprehensive income (loss)	33,135	(35,750)	(10,925)
Total comprehensive income	$ 744,322	$ 595,779	$ 601,218

CONSOLIDATED BALANCE SHEETS $ in Thousands, SFr in Millions	Mar. 31, 2026 USD ($)	Mar. 31, 2025 USD ($)
Current assets:
Cash and cash equivalents	$ 1,741,546	$ 1,503,205
Accounts receivable, net	505,867	454,546
Inventories	489,948	503,747
Other current assets	177,895	131,211
Total current assets	2,915,256	2,592,709
Non-current assets:
Property, plant and equipment, net	116,454	113,858
Goodwill	465,417	463,230
Other intangible assets, net	12,386	24,630
Other assets	339,075	344,077
Total assets	3,848,588	3,538,504
Current liabilities:
Accounts payable	530,983	414,586
Accrued and other current liabilities	781,990	686,503
Total current liabilities	1,312,973	1,101,089
Non-current liabilities:
Income taxes payable	86,322	88,483
Other non-current liabilities	237,899	221,512
Total liabilities	1,637,194	1,411,084
Commitments and contingencies (Note 13)
Shareholders' equity:
Registered shares, CHF 0.25 par value Issued shares: 160,784 and 168,994 at March 31, 2026 and 2025, respectively	28,001	29,432
Additional paid-in capital	123,386	82,591
Shares in treasury, at cost Treasury shares: 17,282 and 20,485 shares at March 31, 2026 and 2025, respectively	(1,207,454)	(1,464,912)
Retained earnings	3,381,278	3,627,261
Accumulated other comprehensive loss	(113,817)	(146,952)
Total shareholders' equity	2,211,394	2,127,420
Total liabilities and shareholders' equity	$ 3,848,588	$ 3,538,504

CONSOLIDATED BALANCE SHEETS (Parenthetical) - SFr / shares	Mar. 31, 2026	Mar. 31, 2025
Statement of Financial Position [Abstract]
Shares, par value (in CHF per share)	SFr 0.25	SFr 0.25
Shares issued (in shares)	160,784,460	168,994,000
Treasury, at cost, shares (in shares)	17,281,896	20,485,000

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2024
Cash flows from operating activities:
Net income	$ 711,187	$ 631,529	$ 612,143
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	64,139	59,664	63,065
Amortization of intangible assets	13,315	20,098	21,681
Impairment of intangible assets	0	0	3,526
Loss on investments	612	2,029	14,674
Share-based compensation expense	112,392	89,913	82,889
Deferred income taxes	29,822	56,543	(42,424)
Change in fair value of contingent consideration for business acquisition	0	0	(250)
Other	28	120	379
Changes in assets and liabilities, net of acquisitions:
Accounts receivable, net	(39,436)	69,979	91,519
Inventories	22,882	(80,501)	259,796
Other assets	(36,559)	23,970	10,760
Accounts payable	109,174	(31,627)	39,336
Accrued and other liabilities	49,651	840	(11,978)
Net cash provided by operating activities	1,037,207	842,557	1,145,116
Cash flows from investing activities:
Purchases of property, plant and equipment	(61,562)	(56,128)	(55,897)
Acquisitions, net of cash acquired	0	0	(14,424)
Purchases of deferred compensation investments	(10,479)	(6,600)	(11,571)
Proceeds from sales of deferred compensation investments	11,308	7,079	12,174
Other investing activities	(1,654)	(1,619)	(617)
Net cash used in investing activities	(62,387)	(57,268)	(70,335)
Cash flows from financing activities:
Payment of cash dividends	(233,059)	(207,853)	(182,305)
Payment of contingent consideration for business acquisition	0	(1,245)	(5,002)
Purchases of registered shares	(534,939)	(588,838)	(504,203)
Proceeds from exercises of stock options and purchase rights	38,320	36,405	32,197
Tax withholdings related to net share settlements of restricted stock units	(21,438)	(32,485)	(29,744)
Other financing activities	0	(3,344)	(1,116)
Net cash used in financing activities	(751,116)	(797,360)	(690,173)
Effect of exchange rate changes on cash and cash equivalents	14,637	(5,566)	(12,789)
Net increase (decrease) in cash and cash equivalents	238,341	(17,637)	371,819
Cash and cash equivalents at beginning of the period	1,503,205	1,520,842	1,149,023
Cash and cash equivalents at end of the period	1,741,546	1,503,205	1,520,842
Non-cash investing and financing activities:
Property, plant and equipment purchased during the period and included in period end liability accounts	13,573	10,106	11,451
Supplemental cash flow information:
Income taxes paid, net	$ 86,353	$ 67,484	$ 50,855

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Registered shares	Additional paid-in capital	Treasury shares	Retained earnings	Accumulated other comprehensive loss
Beginning of the period (in shares) at Mar. 31, 2023		173,106,000
Beginning of the period (in shares) at Mar. 31, 2023				13,763,000
Beginning of the period at Mar. 31, 2023	$ 2,257,560	$ 30,148	$ 127,380	$ (977,266)	$ 3,177,575	$ (100,277)
Increase (Decrease) in Shareholders' Equity
Total comprehensive income	601,218				612,143	(10,925)
Purchases of registered shares (in shares)				7,100,000
Purchases of registered shares	(523,751)			$ (523,751)
Sale of shares upon exercise of stock options and purchase rights (in shares)				(624,000)
Sale of shares upon exercise of stock options and purchase rights	32,197		(28,314)	$ 60,511
Issuance of shares upon vesting of restricted stock units (in shares)				(994,000)
Issuance of shares upon vesting of restricted stock units	(29,744)		(118,771)	$ 89,027
Issuance of shares related to contingent consideration (in shares)				(2,000)
Issuance of shares related to contingent consideration	245		102	$ 143
Share-based compensation	83,127		83,127
Cash dividends	(187,199)				(187,199)
End of the period (in shares) at Mar. 31, 2024		173,106,000
End of the period (in shares) at Mar. 31, 2024				19,243,000
End of the period balance at Mar. 31, 2024	2,233,653	$ 30,148	63,524	$ (1,351,336)	3,602,519	(111,202)
Increase (Decrease) in Shareholders' Equity
Total comprehensive income	595,779				631,529	(35,750)
Purchases of registered shares (in shares)				6,679,000
Purchases of registered shares	(588,028)			$ (588,028)
Sale of shares upon exercise of stock options and purchase rights (in shares)				(492,000)
Sale of shares upon exercise of stock options and purchase rights	36,405		(10,588)	$ 52,927	(5,934)
Issuance of shares upon vesting of restricted stock units (in shares)				(833,000)
Issuance of shares upon vesting of restricted stock units	(32,485)		(60,422)	$ 89,437	(61,500)
Cancellation of treasury shares (in shares)		(4,112,000)		(4,112,000)
Cancellation of treasury shares	0	$ (716)		$ 332,088	(331,372)
Share-based compensation	90,077		90,077
Cash dividends	$ (207,981)				(207,981)
End of the period (in shares) at Mar. 31, 2025		168,994,000
End of the period (in shares) at Mar. 31, 2025	20,485,000			20,485,000
End of the period balance at Mar. 31, 2025	$ 2,127,420	$ 29,432	82,591	$ (1,464,912)	3,627,261	(146,952)
Increase (Decrease) in Shareholders' Equity
Total comprehensive income	744,322				711,187	33,135
Purchases of registered shares (in shares)				6,167,000
Purchases of registered shares	(557,043)			$ (557,043)
Sale of shares upon exercise of stock options and purchase rights (in shares)				(512,000)
Sale of shares upon exercise of stock options and purchase rights	38,320		(5,256)	$ 43,576
Issuance of shares upon vesting of restricted stock units (in shares)				(648,000)
Issuance of shares upon vesting of restricted stock units	(21,438)		(66,491)	$ 58,760	(13,707)
Cancellation of treasury shares (in shares)		(8,210,000)		(8,210,000)
Cancellation of treasury shares	0	$ (1,431)		$ 712,165	(710,734)
Share-based compensation	112,542		112,542
Cash dividends	$ (232,729)				(232,729)
End of the period (in shares) at Mar. 31, 2026		160,784,000
End of the period (in shares) at Mar. 31, 2026	17,281,896			17,282,000
End of the period balance at Mar. 31, 2026	$ 2,211,394	$ 28,001	$ 123,386	$ (1,207,454)	$ 3,381,278	$ (113,817)

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Parenthetical) - $ / shares	12 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2024
Statement of Stockholders' Equity [Abstract]
Cash dividends per share (in dollars per share)	$ 1.58	$ 1.37	$ 1.19

The Company	12 Months Ended
The Company	Mar. 31, 2026
Organization, Consolidation and Presentation of Financial Statements [Abstract]
The Company	The Company Logitech International S.A., together with its consolidated subsidiaries ("Logitech" or the "Company"), designs software-enabled hardware solutions that help businesses thrive and bring people together when working, creating, and gaming. As the point of connection between people and the digital world, the Company's mission is to extend human potential in work and play, in a way that is good for people and the planet. The Company sells its products to a broad range of international customers, including direct sales to retailers, e-tailers, businesses large and small and end consumers through the Company's e-commerce platform, and indirect sales to end customers through distributors. Logitech was founded in Switzerland in 1981 and Logitech International S.A. has been the parent holding company of Logitech since 1988. Logitech International S.A. is a Swiss holding company with its registered office in Hautemorges, Switzerland and headquarters in Lausanne, Switzerland, which conducts its business through subsidiaries in the Americas; Europe, the Middle East and Africa ("EMEA"); and Asia Pacific. Shares of Logitech International S.A. are listed on both the SIX Swiss Exchange under the trading symbol LOGN and the Nasdaq Global Select Market under the trading symbol LOGI.

Summary of Significant Accounting Policies

12 Months Ended

Mar. 31, 2026

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

Basis of Presentation

The consolidated financial statements include the accounts of Logitech and its subsidiaries. All intercompany balances and transactions have been eliminated. The consolidated financial statements are presented in accordance with accounting principles generally accepted in the United States ("U.S. GAAP").

Fiscal Year

The Company's fiscal year ends on March 31. Interim quarters are generally thirteen-week periods, each ending on a Friday. For purposes of presentation, the Company has indicated its quarterly periods end on the last day of the calendar quarter.

Reference to Sales

References to "sales" in the Notes to the consolidated financial statements means net sales, except as otherwise specified.

Use of Estimates

The preparation of financial statements in conformity with U.S. GAAP requires management to make judgments, estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Management bases its estimates on historical experience and various other assumptions believed to be reasonable. Significant estimates and assumptions made by management involve the fair value of goodwill and intangible assets acquired from business acquisitions, pension obligations, accruals for customer incentives, cooperative marketing, and pricing programs ("Customer Programs") and related breakage when appropriate, inventory valuation, share-based compensation expense, uncertain tax positions, and valuation allowances for deferred tax assets. Although these estimates are based on management’s best knowledge of current events and actions that may impact the Company in the future, actual results could differ materially from those estimates.

Risks and Uncertainties

Impacts of Macroeconomic, Geopolitical, and Other Factors on the Company's Business

As the Company conducts operations globally, its business has continued to be impacted by ongoing macroeconomic and geopolitical conditions. These conditions include changes in inflation, interest rate and foreign currency fluctuations, uncertainty in consumer and enterprise demand, tariff and trade policies, memory chip availability, volatile energy prices and increased geopolitical tensions, including the armed conflicts in the Middle East.

In 2025, the United States introduced trade policy actions that increased import tariffs across a wide range of countries at various rates, with certain exemptions. In February 2026, the U.S. Supreme Court issued a decision invalidating certain tariffs previously imposed under the International Emergency Economic Powers Act. In May 2026, some companies began receiving notification from the U.S. Customs and Border Protection (CBP) that tariff refunds would be issued; however, the extent and timing of these tariff refunds remain uncertain. Following the U.S. Supreme Court ruling, the U.S. government introduced new temporary tariffs for a 150-day period beginning February 24, 2026. In May 2026, the U.S. Court of International Trade invalidated these temporary tariffs but they remain in place, subject to appeal. The U.S. government may pursue alternative trade measures, including under Sections 301 and 302 of U.S. trade laws, which could result in additional or replacement tariffs. U.S. tariff policies and international trade arrangements continue to evolve and have had, and may continue to have, a significant impact on the Company's results of operations.

The Company has also been affected by the increases in demand for memory chips and other components caused by the build out of new AI technologies and data centers, leading to a rise in prices for such components and some suppliers transitioning capacity away from certain components utilized in some of the Company's Video Collaboration products.

The global and regional macroeconomic, political, and other conditions have caused and may continue to cause volatility in demand for the Company's products, component availability, transit times and cost of the Company's products including cost of tariffs, materials, and logistics, and as a result, have impacted and may continue to impact the pricing of the Company's products, product availability and the Company's results of operations.

Currencies

The functional currency of the Company's operations is primarily the U.S. Dollar. Certain operations use the Euro, Chinese Renminbi, Swiss Franc, or other local currencies as their functional currencies. The financial statements of the Company's subsidiaries whose functional currency is other than the U.S. Dollar are translated to U.S. Dollars using period-end rates of exchange for assets and liabilities and monthly average rates for sales, income and expenses. Cumulative translation gains and losses are included as a component of shareholders' equity in accumulated other comprehensive income (loss). Gains and losses arising from transactions denominated in currencies other than a subsidiary's functional currency are reported in other income (expense), net in the consolidated statements of operations.

Revenue Recognition

Revenue is recognized when a customer obtains control of promised goods or services in an amount that reflects the transaction price the Company expects to receive in exchange for those goods or services.

Substantially all revenue recognized by the Company relates to the contracts with customers to sell products that allow people to connect through gaming, video, computing, music and other digital platforms. These products are hardware devices, which may include embedded software that function together, and are considered as one performance obligation. Hardware devices are generally plug and play, requiring no configuration and little or no installation. Revenue is recognized at a point in time when control of the products is transferred to the customer which generally occurs upon shipment. The Company’s sales contracts with its customers have a one year or shorter term.

The Company also provides post-contract customer support (“PCS”) for certain products and related software, which includes unspecified software updates and upgrades, bug fixes and maintenance. The transaction price is allocated to two performance obligations in such contracts, based on a relative standalone selling price. The transaction price allocated to PCS is recognized as revenue on a straight-line basis, which reflects the pattern of delivery of PCS, over the estimated term of the support.

The Company also recognizes revenue from subscription services that provide professional streamers with access to streaming software and tools as well as from Video Collaboration support services. These services represent stand-ready performance obligations. Payments for these services are made at the time of or in advance of delivering the services. The proceeds received in advance from such arrangements are recognized as deferred revenue and then recognized as revenue ratably over the service period up to five years.

See Note 8 for the current and non-current deferred revenue associated with the Company’s remaining performance obligations to be recognized within the next 12 months and thereafter, respectively.

The Company normally requires payment from customers within thirty to sixty days from the invoice date. However, terms may vary by customer type, by country and by selling season. The Company generally does not modify payment terms on existing receivables. The Company's contracts with customers do not include significant financing components as the period between the satisfaction of performance obligations and timing of payment are generally within one year.

The transaction price received by the Company from sales to its distributors, retail companies ("retailers"), and authorized resellers is calculated as selling price net of variable consideration which may include product returns and the Company’s payments for Customer Programs related to current period product revenue. The estimated impact of these programs is recorded as a reduction of transaction price or as an operating expense if the Company receives a distinct good or service from the customer and can reasonably estimate the fair value of that good or service received. Customer Programs require management to estimate the percentage of those programs which will not be claimed in the current period or will not be earned by customers, which is commonly referred to as "breakage." Breakage is estimated based on historical claim experience, the period in which customer claims are expected to be submitted, specific terms and conditions with customers and other factors. The Company accounts for breakage as part of variable consideration, subject to constraint, and records the estimated impact in the same period when revenue is recognized at the expected value. Assessing the period in which claims are expected to be submitted and the relevance of the historical claim experience require significant management judgment to estimate the breakage of Customer Programs in any accounting period.

The Company enters into cooperative marketing arrangements with many of its customers and with certain indirect partners, allowing customers to receive a credit equal to a set percentage of their purchases of the Company's products, or a fixed dollar amount for various marketing and incentive programs. The objective of these arrangements is to encourage advertising and promotional events to increase sales of the Company's products.

Customer incentive programs include consumer rebates and performance-based incentives. Consumer rebates are offered to the Company's customers and indirect partners at the Company's discretion for the primary benefit of end-users. In addition, the Company offers performance-based incentives to many of its customers and indirect partners based on predetermined performance criteria. At management's discretion, the Company also offers special pricing discounts to certain customers. Special pricing discounts are usually offered only for limited time periods or for sales of selected products to specific indirect partners.

Cooperative marketing arrangements and customer incentive programs are considered variable consideration, which the Company estimates and records as a reduction to revenue at the time of sale based on negotiated terms, historical experiences, forecasted incentives, anticipated volume of future purchases, and inventory levels in the channel.

The Company has agreements with certain customers that contain terms allowing price protection credits to be issued in the event of a subsequent price reduction. Management's decision to make price reductions is influenced by product life cycle stage, market acceptance of products, the competitive environment, new product introductions and other factors.

Accruals for estimated expected future pricing actions and Customer Programs are recognized at the time of sale based on analyses of historical pricing actions by customer and by product, inventories owned by and located at customers, current customer demand, current operating conditions, and other relevant customer and product information, such as stage of product life-cycle.

Product return rights vary by customer. Estimates of expected future product returns qualify as variable consideration and are recorded as a reduction of the transaction price of the contract at the time of sale based on an analysis of historical return trends by customer and by product, inventories owned by and located at customers, current customer demand, current operating conditions, and other relevant customer and product information. The Company assesses the estimated asset for recovery value for impairment and adjusts the value of the asset for any impairment. Return trends are influenced by product life cycle status, new product introductions, market acceptance of products, sales levels, product sell-through, the type of customer, seasonality, product quality issues, competitive

pressures, operational policies and procedures, and other factors. Return rates can fluctuate over time but are sufficiently predictable to allow the Company to estimate expected future product returns.

Typically, variable consideration does not need to be constrained as estimates are based on predictive historical data or future commitments that are planned and controlled by the Company. However, the Company continues to assess variable consideration estimates such that it is probable that a significant reversal of revenue will not occur.

The Company regularly evaluates the adequacy of its estimates for Customer Programs and product returns. Future market conditions and product transitions may require the Company to take action to change such programs and related estimates. When the variables used to estimate these costs change, or if actual costs differ significantly from the estimates, the Company would be required to increase or reduce revenue or operating expenses to reflect the impact. During the year ended March 31, 2026, changes to these estimates related to performance obligations satisfied in prior periods were not material.

Sales taxes and value-added taxes (“VAT”) collected from customers, if applicable, which are remitted to governmental authorities are not included in revenue, and are reflected as a liability on the consolidated balance sheets.

Shipping and Handling Costs

The Company's shipping and handling costs are included in the cost of goods sold in the consolidated statements of operations.

Contract Balances

The Company records accounts receivable from contracts with customers when it has an unconditional right to consideration, as accounts receivable, net, on the consolidated balance sheets.

The Company records contract liabilities when cash payments are received or due in advance of performance, primarily for implied support and subscriptions. Contract liabilities are included in accrued and other current liabilities and other non-current liabilities on the consolidated balance sheets.

Contract Costs

The Company recognizes the incremental costs of obtaining contracts as an expense when incurred if the amortization period of the assets that otherwise would have been recognized is one year or less. These costs are included in marketing and selling expenses in the consolidated statements of operations. As of March 31, 2026 and 2025, the Company did not have any material deferred contract costs.

Research and Development Costs

Costs related to research, design and development of products, which consist primarily of personnel, product design and infrastructure expenses, are charged to research and development expense as they are incurred.

Advertising Costs

Advertising costs are recorded as either a marketing and selling expense or a deduction from revenue as they are incurred. Advertising costs paid or reimbursed by the Company to direct or indirect customers must have an identifiable benefit and an estimable fair value in order to be classified as an operating expense. If these criteria are not met, the payment is classified as a reduction of revenue. Advertising costs recorded as marketing and selling expense are expensed as incurred. Total advertising costs including those characterized as revenue deductions during fiscal years 2026, 2025 and 2024 were $410.9 million, $355.1 million and $325.3 million, respectively, out of which $54.1 million, $53.1 million, and $46.6 million, respectively, were included as operating expense in the consolidated statements of operations.

Cash Equivalents

The Company classifies all highly liquid instruments purchased, such as bank demand deposits, short-term time deposits, and U.S. Treasury securities, with an original maturity of three months or less at the date of purchase, to be cash equivalents. Cash equivalents are carried at cost, which approximates their fair value.

Concentration of Credit Risk

Financial instruments that potentially subject the Company to concentrations of credit risk consist principally of cash and cash equivalents and accounts receivable. The Company maintains cash and cash equivalents with various creditworthy financial institutions and has a policy to limit exposure with any one financial institution, but is exposed to credit risk in the event of default by financial institutions to the extent that cash balances with individual financial institutions are in excess of amounts that are insured. The Company periodically assesses the credit risk associated with these financial institutions.

The Company sells to large distributors, retailers, and e-tailers and, as a result, maintains individually significant receivable balances with such customers.

The Company had the following customers that individually comprised 10% or more of its gross sales:


	Years Ended March 31,
	2026		2025		2024
Customer A	14	%	14	%	13	%
Customer B	18	%	19	%	18	%
Customer C	12	%	12	%	14	%

The Company had the following customers that individually comprised 10% or more of its accounts receivable:


	March 31,
	2026		2025
Customer A	16	%	14	%
Customer B	23	%	21	%
Customer C	13	%	10	%

The Company manages its accounts receivable credit risk through ongoing credit evaluation of its customers' financial conditions. The Company generally does not require collateral from its customers.

Allowances for Doubtful Accounts

Allowances for doubtful accounts are maintained for expected credit losses resulting from the Company's customers' inability to make required payments. The allowances are based on the Company's regular assessment of various factors, including the credit-worthiness and financial condition of specific customers, historical experience with bad debts and customer deductions, receivables aging, current economic conditions, reasonable and supportable forecasts of future economic conditions, and other factors that may affect the Company's ability to collect from customers.

Inventories

Inventories are stated at the lower of cost and net realizable value. Costs are computed under the standard cost method, which approximates actual costs determined on the first-in, first-out basis. The Company records write-downs of inventories which are obsolete or in excess of anticipated demand or net realizable value based on a consideration of marketability and product life cycle stage, product development plans, component cost trends, historical sales and demand forecasts which consider the assumptions about future demand and market conditions. Inventory on hand which is not expected to be sold or utilized is considered excess, and the Company recognizes the write-down in cost of goods sold at the time of such determination. The write-down is determined by the excess of cost over net realizable value. Net realizable value is the estimated selling price in the ordinary course of business, less reasonably predictable costs of completion, disposal and transportation. At the time of loss recognition, new cost basis per unit and lower-cost basis for that inventory are established and subsequent changes in facts and circumstances would not result in an increase in the cost basis.

The Company recorded liabilities arising from firm, non-cancelable, and unhedged inventory purchase commitments in excess of anticipated demand or net realizable value consistent with its valuation of excess and obsolete inventory. Such liability is included in accrued and other current liabilities on the consolidated balance sheets.

Property, Plant and Equipment

Property, plant and equipment are stated at cost. Additions and improvements are capitalized, and maintenance and repairs are expensed as incurred. The Company capitalizes the cost of software developed for internal use in connection with major projects. Costs incurred during the preliminary project stage and post implementation stage are expensed, whereas direct costs incurred during the application development stage are capitalized.

Depreciation expense is recognized using the straight-line method. Plant and buildings are depreciated over estimated useful lives of twenty-five years, equipment over useful lives from three to five years, internal-use software over useful lives of three years, tooling over useful lives from six months to one year, and leasehold improvements over the lesser of the term of the lease or the estimated useful life of leasehold improvements.

When property and equipment is retired or otherwise disposed of, the cost and accumulated depreciation are relieved from the accounts and the net gain or loss is included in cost of goods sold or operating expenses, depending on the nature of the property and equipment.

Leases

The Company determines if an arrangement is a lease or contains a lease at contract inception. The Company determines if a lease is an operating or finance lease and recognizes right-of-use ("ROU") assets and lease liabilities upon lease commencement. Operating lease ROU assets are included in other assets, short-term lease liabilities are included in accrued and other current liabilities, and long-term lease liabilities are included in other non-current liabilities on the Company's consolidated balance sheets. Leases with an initial term of 12 months or less are not recorded on the balance sheet. For the Company's operating leases, the Company accounts for the lease component and related non-lease component as a single lease component. Lease expense is recognized on a straight-line basis over the lease term.

For operating leases, the lease liability is initially measured at the present value of the unpaid lease payments at lease commencement date. As most of the leases do not provide an implicit rate, the Company generally uses its incremental borrowing rate as the discount rate for the leases. The Company's incremental borrowing rate is the rate of interest it would have to pay on a collateralized basis to borrow an amount equal to the lease payments under similar terms. Because the Company does not generally borrow on a collateralized basis, it uses its understanding of what its collateralized credit rating would be as an input to deriving an appropriate incremental borrowing rate. The operating lease ROU assets include prepaid lease payments and exclude lease incentives.

Intangible Assets

The Company's intangible assets include goodwill and intangible assets with finite lives, which primarily include acquired technology and customer contracts and related relationships. Intangible assets with finite lives are carried at cost and amortized using the straight-line method over their useful lives ranging from one to ten years.

Impairment of Long-Lived Assets

The Company reviews long-lived assets, such as property and equipment, and finite-lived intangible assets, for impairment whenever events indicate that the carrying amounts might not be recoverable. Recoverability of long-lived assets is measured by comparing the projected undiscounted net cash flows associated with those assets to their carrying values. If an asset is considered impaired, it is written down to its fair value, which is determined based on the asset's projected discounted cash flows or appraised value, depending on the nature of the asset. For purposes of recognition of impairment for assets held for use, the Company groups assets and liabilities at the lowest level for which cash flows are separately identifiable.

Impairment of Goodwill

Goodwill represents the excess of the purchase price over the fair value of the net tangible and identifiable intangible assets acquired in each business combination. The Company conducts a goodwill impairment analysis annually at December 31 or more frequently if indicators of impairment exist or if a decision is made to sell or exit a business. Significant judgments are involved in determining if an indicator of impairment has occurred. Such indicators may include deterioration in general economic conditions, negative developments in equity and credit markets, adverse changes in the markets in which an entity operates, increases in input costs that have a negative effect on earnings and cash flows, or a trend of negative or declining cash flows over multiple periods, among

others. The fair value that could be realized in an actual transaction may differ from that used to evaluate the impairment of goodwill.

In reviewing goodwill for impairment, the Company has the option to first assess qualitative factors to determine whether the existence of events or circumstances leads to a determination that it is more likely than not (greater than 50%) that the estimated fair value of a reporting unit is less than its carrying amount. The Company also may elect not to perform the qualitative assessment and, instead, proceed directly to the quantitative impairment test. The ultimate outcome of the goodwill impairment review for a reporting unit should be the same whether the Company chooses to perform the qualitative assessment or proceeds directly to the quantitative impairment test. The Company operates as one reporting unit. For the year ended March 31, 2026, the Company elected to perform a qualitative assessment and concluded that it was more likely than not that the fair value of its reporting unit exceeds its carrying amount.

Income Taxes

The Company provides for income taxes using the asset and liability method, which requires that deferred tax assets and liabilities be recognized for the expected future tax consequences of temporary differences resulting from differing treatment of items for tax and financial reporting purposes, and for operating losses and tax credit carryforwards. In estimating future tax consequences, expected future events are taken into consideration, with the exception of potential tax law or tax rate changes. The Company records a valuation allowance to reduce deferred tax assets to amounts management believes are more likely than not to be realized.

The Company's assessment of uncertain tax positions requires that management makes estimates and judgments about the application of tax law, the expected resolution of uncertain tax positions and other matters. In the event that uncertain tax positions are resolved for amounts different than the Company's estimates, or the related statutes of limitations expire without the assessment of additional income taxes, the Company will be required to adjust the amounts of the related assets and liabilities in the period in which such events occur. Such adjustments may have an impact on the Company's income tax provision and its results of operations.

Fair Value of Financial Instruments

The carrying value of certain of the Company's financial instruments, including cash equivalents, accounts receivable and accounts payable approximates their fair value due to their short maturities.

The Company's investment securities portfolio consists of bank demand deposits, short-term time deposits, and U.S. Treasury securities with an original maturity of three months or less and marketable securities (money market and mutual funds) related to a deferred compensation plan.

The Company's investments related to the deferred compensation plan are reported at fair value based on quoted market prices. The marketable securities related to the deferred compensation plan are classified as non-current investments, as they are intended to fund the deferred compensation plan's long-term liability. Participants in the deferred compensation plan may select the mutual funds in which their compensation deferrals are invested within the confines of the Rabbi Trust which holds the marketable securities. These securities are recorded at fair value based on quoted market prices. Earnings, gains and losses on deferred compensation investments are included in other income (expense), net in the consolidated statements of operations.

The Company also holds certain non-marketable investments that are accounted for as equity method investments and included in other assets in the consolidated balance sheets. In addition, the Company has certain equity investments without readily determinable fair values due to the absence of quoted market prices, the inherent lack of liquidity, and the fact that inputs used to measure fair value are unobservable and require management's judgment. The Company elected the measurement alternative to record these investments at cost and to adjust for impairments and observable price changes resulting from transactions with the same issuer within the statements of operations.

Net Income per Share

Basic net income per share is computed by dividing net income by the weighted average outstanding shares. Diluted net income per share is computed using the weighted average outstanding shares and dilutive share equivalents. Dilutive share equivalents consist of share-based awards, including stock options, purchase rights under employee share purchase plan, and restricted stock units.

The dilutive effect of in-the-money share-based compensation awards is calculated based on the average share price for each fiscal period using the treasury stock method.

Share-Based Compensation Expense

Share-based compensation expense includes compensation expense for share-based awards granted based on the grant date fair value. The grant date fair value for stock options and stock purchase rights is estimated using the Black-Scholes-Merton option-pricing valuation model. The grant date fair value of service-based restricted stock units ("RSUs") is calculated based on the market price on the date of grant, reduced by estimated dividend yield prior to vesting. The grant date fair value of restricted stock units which vest upon meeting certain market- and performance-based conditions ("PSUs") is estimated using the Monte-Carlo simulation method including the effect of the market condition. Share-based compensation expense is recognized ratably over the respective requisite service periods of the awards and forfeitures are accounted for when they occur. For PSUs, the Company recognizes compensation expense using its estimate of probable outcome at the end of the performance period (i.e., the estimated performance against the performance targets). The Company periodically adjusts the cumulative share-based compensation expense recorded when the probable outcome for the PSUs is updated based upon changes in actual and forecasted financial results.

Product Warranty

All of the Company's products are covered by standard warranty to be free from defects in material and workmanship for periods ranging from one year to three years. The warranty period varies by product and by region. The Company’s standard warranty does not provide a service beyond assuring that the product complies with agreed-upon specifications and is not sold separately. The standard warranty the Company provides qualifies as an assurance warranty and is not treated as a separate performance obligation. The Company estimates cost of product warranties at the time the related revenue is recognized based on historical warranty claim rates, historical costs, and knowledge of specific product failures that are outside of the Company's typical experience. The Company accrues a warranty liability for estimated costs to provide products, parts or services to repair or replace products in satisfaction of the warranty obligation. Each quarter, the Company re-evaluates its estimates to assess the adequacy of recorded warranty liabilities. When the Company experiences changes in warranty claim activity or costs associated with fulfilling those claims, the warranty liability is adjusted accordingly.

Comprehensive Income (Loss)

Comprehensive income (loss) is defined as the total change in shareholders' equity during the period other than from transactions with shareholders. Comprehensive income (loss) consists of net income (loss) and other comprehensive income (loss). Other comprehensive income (loss) is comprised of currency translation adjustments from those entities not using the U.S. Dollar as their functional currency, net deferred gains and losses and prior service costs and credits for defined benefit pension plans, and net deferred gains and losses on hedging activity.

Treasury Shares

The Company periodically repurchases shares in the market at fair value. Shares repurchased are recorded at cost as a reduction of total shareholders' equity. Treasury shares held may be reissued to satisfy the exercise of employee stock options and purchase rights, the vesting of restricted stock units, and acquisitions, or may be canceled with shareholder approval. Treasury shares that are reissued are accounted for using the first-in, first-out basis.

When treasury shares are reissued, gains from re-issuance of treasury shares are credited to additional paid-in capital while losses from re-issuance of treasury shares are charged to additional paid-in capital to the extent that there are previously recorded gains to offset the losses, otherwise charged to retained earnings in the consolidated balance sheets. When treasury shares are canceled, the Company deducts the par value from registered shares and reflects the excess of share repurchase cost over par value as a reduction to retained earnings.

Derivative Financial Instruments

The Company enters into foreign exchange forward and swap contracts to reduce the short-term effects of currency fluctuations on certain foreign currency receivables or payables denominated in currencies other than the functional currencies of its subsidiaries. Gains or losses from changes in the fair value of these contracts that offset transaction losses or gains on foreign currency receivables or payables are recognized immediately and included in other income (expense), net in the consolidated statements of operations.

The Company enters into cash flow hedge contracts, including foreign currency forward contracts and foreign currency option contracts, to hedge against exposure to changes in currency exchange rates related to its forecasted inventory purchases. Gains and losses for changes in the fair value of the effective portion of the Company's foreign exchange contracts related to forecasted inventory purchases are deferred as a component of accumulated other comprehensive gain (loss) until the hedged inventory purchases are sold, at which time the gains or losses are reclassified to cost of goods sold.

Restructuring Charges

The Company's restructuring charges consist of employee severance, one-time termination benefits and ongoing benefits related to the reduction of its workforce, and other costs. Liabilities for costs associated with a restructuring activity are measured at fair value and are recognized when the liability is incurred, as opposed to when management commits to a restructuring plan. One-time termination benefits are expensed at the date the entity notifies the employee, unless the employee must provide future service, in which case the benefits are expensed ratably over the future service period. Ongoing benefits are expensed when restructuring activities are probable and the benefit amounts are estimable. Other costs primarily consist of legal, consulting, and other costs related to employee terminations, and are expensed when incurred. Termination benefits are calculated based on regional benefit practices and local statutory requirements.

Recent Accounting Pronouncements Adopted

In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures. ASU 2023-09 requires additional disclosures related to rate reconciliation, income taxes paid, and other disclosures. Under ASU 2023-09, for each annual period presented, public entities are required to (1) disclose specific categories in the tabular rate reconciliation and (2) provide additional information for reconciling items that meet a quantitative threshold. In addition, ASU 2023-09 requires all reporting entities to disclose on an annual basis the amount of income taxes paid disaggregated by federal, state, and foreign taxes as well as the amount of income taxes paid by individual jurisdiction. The Company adopted this ASU in its fiscal year 2026 annual financial statements and applied the standard prospectively. See Note 7 for additional information.

New Accounting Pronouncements Not Yet Adopted

In November 2024, the FASB issued ASU 2024-03, Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses. ASU 2024-03 requires all public entities to disclose in the notes to the financial statements the amounts of purchases of inventory, employee compensation, depreciation, and intangible asset amortization included in each expense caption of the income statement. ASU 2024-03 is effective for fiscal years beginning after December 15, 2026 and interim periods within fiscal years beginning after December 15, 2027. ASU 2024-03 can be applied either prospectively or retrospectively. Early adoption is permitted. The Company is currently evaluating the impact of ASU 2024-03 on its consolidated financial statements and related disclosures.

In July 2025, the FASB issued ASU No. 2025-05, Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses for Accounts Receivable and Contract Assets. ASU 2025-05 provides a practical expedient that permits entities to assume that current conditions as of the balance sheet date will remain unchanged over the remaining life of current accounts receivable and current contract assets when estimating the expected credit losses. ASU 2025-05 is effective for annual periods beginning after December 15, 2025, and interim periods within those annual reporting periods. Early adoption is permitted. ASU 2025-05 should be applied on a prospective basis. The Company does not expect the adoption of ASU 2025-05 to have a material impact on its consolidated financial statements or related disclosures.

In September 2025, the FASB issued ASU No. 2025-06, Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40): Targeted Improvements to the Accounting for Internal-Use Software. ASU 2025-06 updates the cost capitalization threshold for internal-use software development costs by removing all references to software project development stages and providing new guidance on how to evaluate whether the probable-to-complete recognition threshold has been met. ASU 2025-06 is effective for annual periods beginning after December 15, 2027, and interim periods within those annual reporting periods. Early adoption is permitted. ASU 2025-06 can be applied on a prospective basis, with retrospective or modified retrospective application permitted. The Company is currently evaluating the impact of ASU 2025-06 on its consolidated financial statements and related disclosures.

Net Income Per Share

12 Months Ended

Mar. 31, 2026

Earnings Per Share [Abstract]

Net Income Per Share

The following table summarizes the computations of basic and diluted net income per share for fiscal years 2026, 2025 and 2024 (in thousands except per share amounts):


	Years Ended March 31,
	2026		2025		2024
Net income	$	711,187	$	631,529	$	612,143



Shares used in net income per share computation:
Weighted average shares outstanding - basic	146,775		151,322		156,776
Effect of potentially dilutive equivalent shares	1,433		1,462		1,395
Weighted average shares outstanding - diluted	148,208		152,784		158,171

Net income per share:
Basic	$	4.85	$	4.17	$	3.90
Diluted	$	4.80	$	4.13	$	3.87

Share equivalents attributable to outstanding stock options, restricted stock units and employee share purchase plans ("ESPP") totaling 0.5 million, 0.7 million, and 1.1 million shares during fiscal years 2026, 2025 and 2024, respectively, were excluded from the calculation of diluted net income per share because their effect would have been antidilutive. A small number of PSUs were not included in the dilutive net income per share calculation in fiscal years 2025 and 2024 because all necessary conditions had not been satisfied, and those shares were not issuable if the end of the reporting period were the end of the performance contingency period.

Employee Stock-Based Compensation

12 Months Ended

Mar. 31, 2026

Share-Based Payment Arrangement [Abstract]

Employee Stock-Based Compensation

As of March 31, 2026, the Company offers the 2006 Employee Share Purchase Plan (Non-U.S.), as amended and restated ("2006 ESPP"), the 1996 Employee Share Purchase Plan (U.S.), as amended and restated ("1996 ESPP"), and the 2006 Stock Incentive Plan ("2006 Plan") as amended and restated. Shares issued to employees as a result of purchases or exercises under these plans are generally issued from shares held in treasury stock.

Under the 1996 ESPP and 2006 ESPP plans, eligible employees may purchase shares at the lower of 85% of the fair market value at the beginning or the end of each offering period, which is generally six months. Subject to continued participation in these plans, purchase agreements are automatically executed at the end of each offering period. An aggregate of 29.0 million shares were reserved for issuance under the 1996 and 2006 ESPP plans. As of March 31, 2026, a total of 2.4 million shares were available for new awards under these plans.

The 2006 Plan provides for the grant to eligible employees and non-employee directors of stock options, stock appreciation rights, and restricted stock units. Awards under the 2006 Plan may be conditioned on continued employment, the passage of time or the satisfaction of performance and market vesting criteria. The 2006 Plan, as amended, has no expiration date. On June 29, 2022, the Board authorized 3.3 million additional shares for issuance under the 2006 Plan. An aggregate of 33.8 million shares were reserved for issuance under the 2006 Plan. As of March 31, 2026, a total of 6.7 million shares were available for new awards under this plan.

Stock options granted to employees under the 2006 Plan have terms not exceeding ten years and are issued at exercise prices not less than the fair market value on the date of grant.

Service-based restricted stock units ("RSUs") granted to employees under the 2006 Plan generally vest in four equal annual installments on the grant date anniversary. RSUs granted to non-executive board members under the 2006 Plan vest on the grant date anniversary, or earlier on the date of the next annual general meeting following the grant date if the non-executive board member is not re-elected as a director at the annual general meeting.

Restricted stock units with certain market- and performance-based conditions ("PSUs") granted to employees under the 2006 Plan generally vest at the end of the three-year performance period upon meeting predetermined financial metrics over three years, with the number of shares to be received upon vesting determined based on constant currency revenue growth rate, adjusted operating income (loss) and the Company's total shareholder return ("TSR") relative to the performance of companies in the Russell 3000 Index over the same three years period.

The following table summarizes share-based compensation expense and total income tax benefit recognized for fiscal years 2026, 2025 and 2024 (in thousands):


	Years Ended March 31,
	2026		2025		2024
Cost of goods sold	$	10,631	$	10,021	$	8,004
Marketing and selling	42,506		40,378		35,780
Research and development	22,904		20,180		17,836
General and administrative	36,351		19,334		21,269
Total share-based compensation expense	112,392		89,913		82,889

Income tax benefit	(20,721)		(20,148)		(15,305)
Total share-based compensation expense, net of income tax benefit	$	91,671	$	69,765	$	67,584

The income tax benefit in the respective periods primarily consisted of tax benefits related to the share-based compensation expense for the period and direct tax benefit realized, including net excess tax benefits recognized from share-based awards vested or exercised during the period.

Share-based compensation costs capitalized as part of inventory were $8.4 million, $7.6 million, and $6.3 million for the fiscal year ended March 31, 2026, 2025 and 2024, respectively.

As of March 31, 2026, there was $151.6 million of total future stock-based compensation cost to be recognized over a weighted-average period of 2.3 years.

The estimates of share-based compensation expense require a number of complex and subjective assumptions including stock price volatility, employee exercise patterns, probability of achievement of the set performance condition, dividend yield, related tax effects and the selection of an appropriate fair value model.

The grant date fair value of the ESPP using the Black-Scholes-Merton option-pricing valuation model and the grant date fair value of the PSUs using the Monte-Carlo simulation method are determined with the following assumptions:


	Employee Stock Purchase Plans
	Years Ended March 31,
	2026	2025	2024
Expected dividend rate	1.79%	1.35%	1.61%
Risk-free interest rate	3.90%	4.71%	5.36%
Expected volatility	38%	29%	33%
Expected term (years)	0.5	0.5	0.5
Weighted average grant date fair value per share	$23.10	$21.74	$19.02


PSUs	Years Ended March 31,
	2026	2025	2024
Expected dividend rate	1.63%	1.41%	1.90%
Risk-free interest rate	3.90%	4.55%	3.83%
Expected volatility	37%	38%	41%
Expected term (years)	3.0	3.0	3.0

The expected dividend rate assumption is based on the Company's history and future expectations of dividend payouts. Unvested stock-awards are not eligible for these dividends. The expected term is based on the purchase offerings periods expected to remain outstanding for employee stock purchase plan or the performance period for PSUs. Expected volatility is based on historical volatility using the Company's daily closing prices, or including the volatility of components of the Russell 3000 Index for PSUs, over the expected term. The Company considers the historical price volatility of its shares as most representative of future volatility. The risk-free interest rate

assumptions are based upon the implied yield of U.S. Treasury zero-coupon issues for the expected term of the Company's share-based awards.

For PSUs, the Company estimates the probability and timing of the achievement of the set performance condition at the time of the grant based on the historical financial performance and the financial forecast in the remaining performance period and reassesses the probability in subsequent periods when actual results or new information become available.

A summary of the Company's stock option activities under all stock plans for fiscal years 2026, 2025 and 2024 is as follows:


	Number of Shares	Weighted-Average Exercise Price		Weighted-Average Remaining Contractual Term	Aggregate Intrinsic Value
	(In thousands)			(Years)	(In thousands)
Outstanding, March 31, 2023	1,120
Exercised	(181)				$	6,160
Forfeited	(176)

Outstanding, March 31, 2024	763

Exercised	(111)				$	1,483
Forfeited	(65)
Outstanding, March 31, 2025	587	$	64	5.3	$	11,768
Exercised	(129)	$	67		$	4,371
Outstanding, March 31, 2026	458	$	64	4.7	$	12,500
Vested and exercisable, March 31, 2026	458	$	64	4.7	$	12,500

A summary of the Company's RSU and PSU activities for fiscal years 2026, 2025 and 2024 is as follows:


	Number of Shares	Weighted-Average Grant Date Fair Value		Aggregate Fair Value
	(In thousands)			(In thousands)
Outstanding, March 31, 2023	3,456	$	66
Granted—RSUs	1,396	$	59
Granted—PSUs	457	$	67
Vested	(1,200)			$	92,340
Forfeited	(631)
Outstanding, March 31, 2024	3,478	$	65
Granted—RSUs	931	$	93
Granted—PSUs	281	$	91
Vested	(1,172)			$	113,553
Forfeited	(462)
Outstanding, March 31, 2025	3,056	$	73
Granted—RSUs	1,017	$	84
Granted—PSUs	275	$	90
Vested	(895)	$	72	$	78,466
Forfeited	(512)	$	72
Outstanding, March 31, 2026	2,941	$	79

The shares outstanding as of March 31, 2026 above include 0.7 million shares of PSUs. The Company presents the number of PSUs and weighted-average grant date fair value at 100 percent of the performance target; however, the aggregate fair value of shares vested is based on the actual number of PSUs vested according to achievement of the financial metrics over the performance period.

Employee Benefit Plans

12 Months Ended

Mar. 31, 2026

Employee Benefit Plans

Defined Benefit Plans

Certain subsidiaries of the Company sponsor defined benefit pension plans or non-retirement post-employment benefits covering substantially all of their employees. Benefits are provided based on employees' years of service and earnings, or in accordance with applicable employee benefit regulations. The Company's practice is to fund amounts sufficient to meet the requirements set forth in the applicable employee benefit and tax regulations.

The Company recognizes the overfunded or underfunded status of defined benefit pension plans and non-retirement post-employment benefit obligations as an asset or liability in its consolidated balance sheets and recognizes changes in the funded status of defined benefit pension plans in the year in which the changes occur through accumulated other comprehensive income (loss), which is a component of shareholders' equity. Each plan's assets and benefit obligations are generally remeasured as of March 31 each year.

The net periodic benefit cost of the defined benefit pension plans and the non-retirement post-employment benefit obligations for fiscal years 2026, 2025 and 2024 was as follows (in thousands):


	Years Ended March 31,
	2026		2025		2024
Service costs	$	13,708	$	11,875	$	11,479
Interest costs	3,564		3,298		3,844
Expected return on plan assets	(9,674)		(7,671)		(6,950)
Amortization:

Net prior service cost (credit) recognized	(658)		309		(500)
Net actuarial loss (gain) recognized	919		450		(179)

Settlement loss	1,881		—		922
Total net periodic benefit cost	$	9,740	$	8,261	$	8,616

The components of net periodic benefit cost other than the service cost component are included in other income (expense), net, in the consolidated statements of operations.

The changes in projected benefit obligations for fiscal years 2026 and 2025 were as follows (in thousands):


	Years Ended March 31,
	2026		2025
Projected benefit obligations, beginning of the year	$	259,141	$	213,477
Service costs	13,708		11,875
Interest costs	3,564		3,298
Plan participant contributions	7,088		6,676
Actuarial loss	2,216		13,691
Benefits paid	(3,475)		(10,578)
Transfer of prior vested benefits	7,416		15,301
Plan amendments	—		909
Settlement	(18,255)		—
Administrative expense paid	(174)		(157)
Currency exchange rate changes	24,415		4,649
Projected benefit obligations, end of the year	$	295,644	$	259,141

The accumulated benefit obligation for all defined benefit pension plans as of March 31, 2026 and 2025 was $262.6 million and $227.7 million, respectively.

Actuarial loss for fiscal year 2025, related to changes in the Company’s pension benefit obligation, was primarily driven by fluctuations in the discount rate. In fiscal year 2026, actuarial loss was not material.

The changes in the fair value of plan assets for fiscal years 2026 and 2025 were as follows (in thousands):


	Years Ended March 31,
	2026		2025
Fair value of plan assets, beginning of the year	$	201,459	$	170,640
Actual return on plan assets	9,386		5,076
Employer contributions	10,544		10,351
Plan participant contributions	7,088		6,676
Benefits paid	(3,475)		(10,578)
Transfer of prior vested benefits	7,416		15,301
Settlement	(18,255)		—
Administrative expenses paid	(174)		(157)
Currency exchange rate changes	19,842		4,150
Fair value of plan assets, end of the year	$	233,831	$	201,459

The Company's investment objectives are to ensure that the assets of its defined benefit plans are invested to provide an optimal rate of investment return on the total investment portfolio, consistent with the assumption of a reasonable risk level, and to ensure that pension funds are available to meet the plans' benefit obligations as they become due. The Company believes that a well-diversified investment portfolio will result in the highest attainable investment return with an acceptable level of overall risk. Investment strategies and allocation decisions are also governed by applicable governmental regulatory agencies. The Company's investment strategy with respect to its largest defined benefit plan, which is available only to Swiss employees, is to invest per the following allocation: 33% in equities, 28% in bonds, 28% in real estate, 4% in cash and cash equivalents and the remaining in other investments. The Company can invest in real estate funds, commodity funds, and hedge funds depending upon economic conditions.

The following tables present the fair value of the defined benefit pension plan assets by major categories and by levels within the fair value hierarchy as of March 31, 2026 and 2025 (in thousands):


	March 31,
	2026				2025
	Level 1		Level 2		Total		Level 1		Level 2		Total
Cash and cash equivalents	$	26,588	$	—	$	26,588	$	21,202	$	—	$	21,202
Equity securities	80,223		—		80,223		60,867		—		60,867
Debt securities	52,819		—		52,819		50,178		—		50,178
Real estate funds	31,979		19,443		51,422		44,906		6,833		51,739
Hedge funds	—		13,556		13,556		—		8,994		8,994

Other	8,721		502		9,223		8,005		474		8,479
Total fair value of plan assets	$	200,330	$	33,501	$	233,831	$	185,158	$	16,301	$	201,459

The funded status of the plans was as follows (in thousands):


	Years Ended March 31,
	2026		2025
Fair value of plan assets	$	233,831	$	201,459
Less: projected benefit obligations	295,644		259,141
Underfunded status	$	(61,813)	$	(57,682)

Amounts recognized on the balance sheets for the plans were as follows (in thousands):


	March 31,
	2026		2025
Current liabilities	$	2,036	$	1,728
Non-current liabilities	59,777		55,954
Total liabilities	$	61,813	$	57,682

Amounts recognized in accumulated other comprehensive income (loss) related to defined benefit pension plans were as follows (in thousands):


	March 31,
	2026		2025
Net prior service credits	$	218	$	820
Net actuarial loss	(22,709)		(22,696)
Accumulated other comprehensive loss	(22,491)		(21,876)
Deferred taxes	747		(3,400)
Accumulated other comprehensive loss, net of tax	$	(21,744)	$	(25,276)

The actuarial assumptions for the defined benefit plans were as follows:


	Years Ended March 31,
	2026	2025
Benefit Obligations:
Discount rate	1.10%- 6.75%	1.20% - 6.50%
Estimated rate of compensation increase	2.00% - 10.00%	2.00% - 10.00%
Cash balance interest credit rate	0.75% - 1.75%	0.75% - 1.75%


	Years Ended March 31,
	2026	2025	2024
Net Periodic Costs:
Discount rate	1.20% - 6.50%	1.50% - 7.00%	1.50% - 7.25%
Estimated rate of compensation increase	2.00% - 10.00%	2.25% - 10.00%	2.25% - 10.00%
Expected average rate of return on plan assets	1.00% - 4.50%	1.00% - 5.25%	0.50% - 4.50%
Cash balance interest credit rate	0.75% - 1.75%	0.50% - 1.75%	0.50% - 1.75%

The discount rate is estimated based on corporate bond yields or securities of similar quality in the respective country, with a duration approximating the period over which the benefit obligations are expected to be paid. The Company bases the compensation increase assumptions on historical experience and future expectations. The expected average rate of return for the Company's defined benefit pension plans represents the average rate of return expected to be earned on plan assets over the period that the benefit obligations are expected to be paid, based on government bond notes in the respective country, adjusted for corporate risk premiums as appropriate.

The following table reflects the benefit payments that the Company expects the plans to pay in the periods noted (in thousands):


Years Ending March 31,
2027	$	20,309
2028	$	17,109
2029	$	16,841
2030	$	17,194
2031	$	16,247
2032-2036	$	89,012

The Company expects to contribute $8.4 million to its defined benefit pension plans during fiscal year 2027.

Defined Contribution Plans

Certain of the Company's subsidiaries have defined contribution employee benefit plans covering all or a portion of their employees. Contributions to these plans are discretionary for certain plans and are based on specified or statutory requirements for others. The charges to expense for these plans for fiscal years 2026, 2025 and 2024, were $15.7 million, $13.7 million and $14.4 million, respectively.

Deferred Compensation Plan

One of the Company's subsidiaries offers a deferred compensation plan that permits eligible employees to make 100% vested salary and incentive compensation deferrals within established limits. The Company does not make contributions to the plan.

The deferred compensation plan's assets consist of marketable securities and are included in other assets on the consolidated balance sheets. The marketable securities were recorded at a fair value of $30.5 million and $29.0 million as of March 31, 2026 and 2025, respectively, based on quoted market prices (see Note 9). The Company also had deferred compensation liability of $30.5 million and $29.0 million, which are included in other non-current liabilities on the consolidated balance sheets as of March 31, 2026 and 2025, respectively. Earnings, gains and losses on deferred compensation investments are included in other income (expense), net (see Note 6) and corresponding changes in deferred compensation liability are included in operating expenses and cost of goods sold in the consolidated statements of operations.

Other Income (Expense), Net

12 Months Ended

Mar. 31, 2026

Other Income and Expenses [Abstract]

Other Income (Expense), Net

Other income (expense), net, comprises the following (in thousands):


	Years Ended March 31,
	2026		2025		2024
Investment gain related to the deferred compensation plan	$	3,714	$	2,131	$	4,320
Currency exchange loss, net	(3,733)		(6,401)		(8,770)
Loss on investments, net (1)	(612)		(2,029)		(14,674)
Non-service cost net pension income and other (2)	3,710		3,319		2,748
Other income (expense), net	$	3,079	$	(2,980)	$	(16,376)

(1) Includes unrealized gain (loss) from the change in fair value of investments, income (loss) on equity-method investments, and impairment of investments during the periods presented, as applicable (see Note 9).

(2) Includes the components of net periodic benefit cost of defined benefit plans other than the service cost component (see Note 5).

Income Taxes

12 Months Ended

Mar. 31, 2026

Income Tax Disclosure [Abstract]

Income Taxes

The Company is incorporated in Switzerland but operates in various countries with differing tax laws and rates. Further, a portion of the Company's income before taxes and the provision for income taxes is generated outside of Switzerland.

Income from continuing operations before income taxes for fiscal years 2026, 2025 and 2024 is summarized as follows (in thousands):


	Years Ended March 31,
	2026		2025		2024
Swiss	$	550,787	$	492,941	$	502,291
Non-Swiss	275,732		213,931		119,305
Income before taxes	$	826,519	$	706,872	$	621,596

The provision for income taxes is summarized as follows (in thousands):


	Years Ended March 31,
	2026		2025		2024
Current:
Swiss	$	54,644	$	(14,673)	$	26,833
Non-Swiss	30,866		33,473		25,044
Deferred:

Swiss	38,192		45,283		(47,517)
Non-Swiss	(8,370)		11,260		5,093
Provision for income taxes	$	115,332	$	75,343	$	9,453

The following table is presented in accordance with ASU 2023-09, which the Company adopted in fiscal year 2026. The Company has adopted this standard prospectively. See Note 2 for additional information. The difference between the provision for income taxes and the expected tax provision at the Swiss statutory income tax rate of 8.5% for the current period is reconciled below (in thousands):


	Year Ended March 31,
	2026		As a percent
Pretax book income at Statutory rate	$	70,250	8.5	%
Domestic federal reconciling items:
Federal Tax Deduction	(4,436)		(0.5)	%
Participation Exemption	(33,617)		(4.1)	%
Domestic state and local income taxes:
Vaud	43,812		5.3	%
Zurich	415		0.1	%
Domestic other, net	4,213		0.5	%
Foreign reconciling items:
U.S.:
Statutory tax rate difference between United States and Switzerland	13,948		1.7	%
Foreign derived intangible income	(4,192)		(0.5)	%
State tax expense, net of federal benefit	4,189		0.5	%
Tax credits	(6,022)		(0.7)	%
Non-deductible executive compensation	4,314		0.5	%
Other, net	346		—	%
China:
Statutory tax rate difference between China and Switzerland	8,931		1.1	%
Other, net	118		—	%
Hong Kong - Tax exempt dividends	(7,402)		(0.9)	%
Other foreign jurisdictions	45,138		5.5	%
Changes in unrecognized tax benefits	(24,673)		(3.0)	%
Effective Tax Rate	$	115,332	14.0	%

The effective income tax rate in 2026 includes the tax effect of the expiration of statutes of limitation of uncertain tax positions and non-taxable dividend distributions, offset by foreign earnings taxed at different rates than the statutory rate.

The difference between the provision for income taxes and the expected tax provision at the Swiss statutory income tax rate of 8.5% is reconciled for prior periods as previously disclosed prior to the adoption of ASU 2023-09 (in thousands):


	Years Ended March 31,
		2025		2024
Expected tax provision at statutory income tax rates		$	60,084	$	52,836
Income taxes at different rates		68,212		47,595
Research and development tax credits		(6,797)		(9,738)
Swiss Tax Benefits		—		(50,051)
Executive compensation		980		407
Stock-based compensation		(2,162)		4,019
Deferred tax effects from TRAF		—		(33,926)
Valuation allowance		1,000		4,780

Restructuring credits		(817)		—
Unrecognized tax benefits/ Audit resolution and statute lapse		(43,333)		11,535

FDII deduction		(1,424)		(18,675)
Other, net		(400)		671
Provision for income taxes		$	75,343	$	9,453

The effective income tax rate in 2025 includes the tax effect of audit resolutions and the expiration of statutes of limitation of uncertain tax positions totaling $53.3 million, offset by the increase to unrecognized tax benefits in 2025 of $10.0 million. The effective tax rate in 2024 includes the discrete tax benefits recognized in fiscal year 2024 for the benefit of future Swiss tax deductions, the remeasurement of the tax basis of goodwill under TRAF (as defined below), FDII (as defined below) incentive provided by the Tax Cuts and Jobs Act and remeasurement of the Company's Swiss deferred tax assets due to a change in tax rate.

On March 28, 2024, the Swiss canton of Vaud confirmed a future tax benefit to be recognized for ten years. This resulted in the Company recording an income tax benefit of $50.1 million during the fiscal year ended March 31, 2024, which will be utilized over a ten-year period.

The canton of Vaud completed the legislative process to enact the Swiss Federal Act on Tax Reform and AHV Financing (“TRAF”), a reform to better align the Swiss tax system to international tax standards on March 20, 2020 that took effect as of January 1, 2020. In March 2020, the Company increased the tax basis of goodwill, as a transition measure under TRAF, to be amortized over ten years beginning on January 1, 2020. During the fiscal year ended March 31, 2024, the Company remeasured the tax basis of goodwill under TRAF, which resulted in an income tax benefit of $25.1 million, net of assessment for uncertain tax positions. The remeasurement of the step-up will be amortized over the remaining ten-year amortization period.

On December 29, 2023, a change to the cantonal tax legislation was published. According to the law approved by the Vaud parliament, a progressive scale will be applicable for cantonal tax purposes resulting in an increase from the then current tax rate of 13.61% to 14.28% effective fiscal year 2025. The increase in tax rate resulted in a tax benefit of $5.1 million due to a remeasurement of the Company's Swiss deferred tax assets in the fiscal year ended March 31, 2024.

The Tax Cuts and Jobs Act enacted Section 250, which provides for a deduction with respect to Global Intangible Low-Taxed Income ("GILTI") and Foreign-Derived Intangible Income ("FDII") in the U.S. The application of this tax incentive is inherently complex. During the fiscal year ended March 31, 2024, the Company analyzed the applicability of FDII and determined that this tax incentive applies to fiscal years 2021, 2022 and 2023. As a result, the Company realized a tax benefit of $18.7 million related to FDII. The Company has also concluded that any GILTI tax since the enactment of Tax Cuts and Jobs Act is immaterial.

On July 4, 2025, the One Big Beautiful Bill Act (the "OBBBA") was enacted into law in the United States and most relevant provisions will be effective for the Company beginning in fiscal year 2027. The OBBBA includes numerous provisions that affect corporate taxation, impacting areas such as R&D expensing, bonus depreciation, and international tax provisions. The Company has reviewed the provisions of the OBBBA to determine the potential impact on the Company's financial statements. Based on this review, and considering the Company's current tax position and operations, at this time the Company does not expect the OBBBA to have a material impact on its income taxes, including current and deferred tax balances and the effective tax rate.

For the fiscal year ended March 31, 2026, the Company assessed its exposure to the OECD Pillar Two global minimum tax rules. The Company has determined that, for the fiscal year 2026, most jurisdictions in which it operates should qualify for the transitional Country-by-Country Reporting ("CbCR") safe harbor, as outlined in the OECD Administrative Guidance and enacted domestic legislation. The Company's CbCR has been prepared in accordance with the requirements for a Qualified CbCR, using qualified financial statements. Based on this data, most jurisdictions continue to meet safe harbor qualifications at 16% tax rates, and therefore, the Company is only required to perform a detailed Pillar Two top-up tax calculation for limited jurisdictions. The estimated top up tax for fiscal year 2026 is de minimis.

On January 5, 2026, the OECD released an Administrative Guidance package. This package includes a “Side-by-Side” System designed to align the U.S. tax regime with Pillar Two for U.S.-parented multinational groups, effective for tax years beginning on or after January 1, 2026. As the Company is a non-U.S. headquartered multinational, the “Side-by-Side” System itself does not apply to the Company’s tax profile. However, the broader guidance package also introduces a new permanent safe harbor (to replace the transitional CbCR safe harbor for fiscal years beginning in 2027) and a one-year extension of the transitional CbCR safe harbor that may potentially impact the Company’s Pillar Two compliance and reporting. The Company continues to monitor these developments but does not expect a material change to its Pillar Two liability.

Deferred income tax assets and liabilities consist of the following (in thousands):


	March 31,
	2026		2025
Deferred tax assets:
Tax attributes carryforward	$	42,408	$	43,536
Future tax deduction from Swiss Tax Benefits	50,630		48,267
Accruals	67,963		72,114
Tax step-up of goodwill from TRAF	73,512		86,519
Share-based compensation	20,228		15,411
Gross deferred tax assets	254,741		265,847
Valuation allowance	(36,922)		(36,537)
Deferred tax assets after valuation allowance	$	217,819	$	229,310
Deferred tax liabilities:
Acquired intangible assets and other	$	(23,975)	$	(27,788)
Deferred tax liabilities	(23,975)		(27,788)
Deferred tax assets, net	$	193,844	$	201,522

Management regularly assesses the ability to realize deferred tax assets recorded in the Company's entities based upon the weight of available evidence, including such factors as recent earnings history and expected future taxable income. In the event that the Company changes its determination as to the amount of deferred tax assets that can be realized, the Company will adjust its valuation allowance with a corresponding impact to the provision for income taxes in the period in which such determination is made.

The Company had a valuation allowance against deferred tax assets of $36.9 million at March 31, 2026, compared to $36.5 million at March 31, 2025. The Company had a valuation allowance of $36.8 million as of March 31, 2026 against deferred tax assets in the state of California, an increase from $36.4 million as of March 31, 2025 from activities during the year. The Company determined that it is more likely than not that the Company would not generate sufficient taxable income in the future to utilize such deferred tax assets.

As of March 31, 2026, the Company had net operating loss carryforwards in Switzerland for income tax purposes of $30.8 million which will begin to expire in fiscal year 2028. The Company had net operating loss and tax credit carryforwards in the United States for income tax purposes of $0.4 million and $61.1 million, respectively, as of March 31, 2026. The net operating loss carryforwards in the United States relate to acquisitions and, as a result, are limited in the amount that can be utilized in any one year and have no expiration. The tax credit carryforwards will begin to expire in fiscal year 2027.

For the fiscal year ended March 31, 2026, individual jurisdictions are separately presented where the net amount of income taxes paid is equal to or greater than 5% of total income taxes paid. As the Company adopted ASU 2023-09 on a prospective basis, comparative jurisdictional information for prior periods is not presented.

The following table presents income taxes, including withholding taxes, paid, net of refunds received, disaggregated by federal, state, and foreign jurisdictions (in thousands):


	Year Ended March 31,
	2026
Switzerland - Federal	$	19,028
Switzerland - Cantonal:
Vaud	$	21,851
Zurich	116
Total Cantonal	$	21,967
Foreign:
United States	$	6,502
China	9,466
Japan	5,283
Brazil	5,059
Sweden	4,551
Other	14,497
Total Foreign	$	45,358
Total	$	86,353

For fiscal years ended March 31, 2025 and 2024, total income taxes paid, net of refunds received was $67.5 million and $50.9 million, respectively.

The Company has accumulated earnings in non-Swiss subsidiaries that are primarily intended to support operations outside of Switzerland. Deferred income taxes have not been recognized on a portion of these earnings with respect to Swiss income taxes and foreign withholding taxes, as such earnings are expected to be reinvested outside of Switzerland to fund local working capital requirements. If repatriated, the Company would generally be subject to foreign withholding taxes, which represent the primary source of incremental tax cost, and limited Swiss income tax, due to the Swiss participation exemption.

The Company follows a two-step approach in recognizing and measuring uncertain tax positions. The first step is to evaluate the tax position for recognition by determining if the weight of available evidence indicates that it is more likely than not that the position will be sustained on audit, including resolution of related appeals or litigation processes, if any. The second step is to measure the tax benefit as the largest amount that is more than 50% likely of being realized upon ultimate settlement.

As of March 31, 2026 and 2025, the total amount of unrecognized tax benefits due to uncertain tax positions was $131.4 million and $152.0 million, respectively, all of which would affect the effective income tax rate if recognized.

As of March 31, 2026 and 2025, the Company had $86.3 million and $88.5 million, respectively, in non-current income taxes payable, including interest and penalties, related to the Company's income tax liability for uncertain tax positions.

The aggregate changes in gross unrecognized tax benefits in fiscal years 2026, 2025 and 2024 were as follows (in thousands):


March 31, 2023	$	191,000
Lapse of statute of limitations	(3,863)
Settlements with taxing authorities	41
Increases in balances related to tax positions taken during prior years	705
Increases in balances related to tax positions taken during the year	22,332
March 31, 2024	$	210,215
Lapse of statute of limitations	(25,075)
Settlements with taxing authorities	(32,314)
Increases (decreases) in balances related to tax positions taken during prior years	(3,055)
Increases in balances related to tax positions taken during the year	2,213
March 31, 2025	$	151,984
Lapse of statute of limitations	(23,176)

Increases (decreases) in balances related to tax positions taken during prior years	(1,120)
Increases in balances related to tax positions taken during the year	3,673
March 31, 2026	$	131,361

The Company recognizes interest and penalties related to unrecognized tax positions as income tax expense. The Company recognized $3.1 million and $(0.6) million, in interest and penalties related to unrecognized tax positions in income tax expense during fiscal years 2026 and 2025, respectively. In 2025, the interest accrual was reduced in excess of the current year accrual build as a result of audit settlements and statute lapses. As of March 31, 2026 and 2025, the Company had $8.3 million and $7.2 million, respectively, of accrued interest and penalties related to uncertain tax positions.

The Company’s unrecognized tax benefits decreased by $20.6 million during the fiscal year ended March 31, 2026, primarily due to the expiration of the statutes of limitations for certain U.S. federal positions. In the United States, the federal and state tax agencies have the authority to examine periods prior to fiscal year 2022, to the extent allowed by law, but only to the extent tax attributes were generated, carried forward, and are being utilized in subsequent years. The statute of limitations in the United States otherwise lapsed for fiscal year 2022 in fiscal year 2026. The Company is under examination in several foreign tax jurisdictions. If the examinations are resolved unfavorably, there is a possibility they may have a negative impact on its results of operations. Although the Company has adequately provided for uncertain tax positions, the provisions on these positions may change as revised estimates are made or the underlying matters are settled or otherwise resolved.

- Definition

The entire disclosure for income tax.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 740
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477617/942-740-50-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
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-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480738/235-10-S50-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478822/944-740-50-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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-SubTopic 10
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-Section 50
-Paragraph 12
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-12

Reference 5: http://www.xbrl.org/2003/role/exampleRef
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-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 231
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482663/740-10-55-231

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12C
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-12C

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-12B

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 270
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477891/740-270-50-1

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
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Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 20
-Name Accounting Standards Codification
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-Publisher FASB
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Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
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-Paragraph 1
-Subparagraph (SX 210.4-08(h)(2))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
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-Publisher FASB
-URI https://asc.fasb.org/740/tableOfContent

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
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-Section 50
-Paragraph 14
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-14

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 21
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-21

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 17
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-17

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 11.C)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479360/740-10-S99-2

Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482603/740-30-50-2

+ Details

Balance Sheet Components

12 Months Ended

Mar. 31, 2026

Balance Sheet Related Disclosures [Abstract]

Balance Sheet Components

The following table presents the components of certain balance sheet asset amounts as of March 31, 2026 and 2025 (in thousands):


	March 31,
	2026		2025
Accounts receivable, net:
Accounts receivable	$	792,466	$	708,693

Allowance for cooperative marketing arrangements	(49,964)		(44,457)
Allowance for customer incentive programs	(73,999)		(66,564)
Allowance for pricing programs	(144,800)		(105,876)
Other allowances	(17,836)		(37,250)
	$	505,867	$	454,546
Inventories:
Raw materials	$	62,484	$	48,699
Finished goods	427,464		455,048
	$	489,948	$	503,747
Other current assets:
Value-added tax ("VAT") receivables	$	58,600	$	46,332
Prepaid expenses and other assets	119,295		84,879
	$	177,895	$	131,211
Property, plant and equipment, net:
Plant, buildings and improvements	$	93,023	$	88,041
Equipment and tooling	350,869		324,007
Computer equipment	28,108		26,881
Software	103,961		95,829
	575,961		534,758
Less: accumulated depreciation and amortization	(470,964)		(429,889)
	104,997		104,869
Construction-in-process	8,750		6,337
Land	2,707		2,652
	$	116,454	$	113,858
Other assets:
Deferred tax assets	$	192,083	$	202,180
Right-of-use assets	71,531		75,239
Investments for deferred compensation plan	30,495		29,006
Investments in privately held companies	28,871		27,980
Other assets	16,095		9,672
	$	339,075	$	344,077

The following table presents the components of certain balance sheet liability amounts as of March 31, 2026 and 2025 (in thousands):


	March 31,
	2026		2025
Accrued and other current liabilities:
Accrued customer marketing, pricing and incentive programs	$	211,915	$	173,401
Accrued personnel expenses	165,404		180,763
Deferred revenue (1)	38,652		25,798
Income taxes payable	37,843		26,841
VAT payable	36,292		29,648
Warranty liabilities	35,488		34,428
Accrued sales return liability	27,635		27,913
Accrued loss for inventory purchase commitments	18,167		19,614
Operating lease liabilities	17,044		15,780
Other current liabilities	193,550		152,317
	$	781,990	$	686,503
Other non-current liabilities:
Operating lease liabilities	$	71,111	$	76,622
Employee benefit plan obligations	61,066		57,338
Deferred revenue (1)	53,624		38,216
Obligation for deferred compensation plan	30,495		29,006
Warranty liabilities	14,754		14,756

Other non-current liabilities	6,849		5,574
	$	237,899	$	221,512

(1) Includes deferred revenue for post-contract customer support and other services.

Fair Value Measurements

12 Months Ended

Mar. 31, 2026

Fair Value Disclosures [Abstract]

Fair Value Measurements

The Company considers fair value as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants at the measurement date. The Company utilizes the following three-level fair value hierarchy to establish the priorities of the inputs used to measure fair value:

•Level 1—Quoted prices in active markets for identical assets or liabilities.

•Level 2—Observable inputs other than quoted market prices included in Level 1, such as quoted prices for similar assets and liabilities in active markets; quoted prices for identical or similar assets and liabilities in markets that are not active; or other inputs that are observable or can be corroborated by observable market data.

•Level 3—Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. This includes certain pricing models, discounted cash flow methodologies and similar techniques that use significant unobservable inputs.

The following table presents the Company's financial assets and liabilities that were accounted for at fair value on a recurring basis, excluding assets related to the Company's defined benefit pension plans, classified by the level within the fair value hierarchy (in thousands):


	March 31, 2026						March 31, 2025
	Level 1		Level 2		Level 3		Level 1		Level 2		Level 3
Assets:
Cash equivalents	$	863,120	$	—	$	—	$	852,467	$	—	$	—
Investments for deferred compensation plan included in other assets:
Cash	$	60	$	—	$	—	$	90	$	—	$	—
Common stock	902		—		—		540		—		—
Money market funds	4,553		—		—		7,359		—		—
Mutual funds	24,980		—		—		21,017		—		—
Total investments for deferred compensation plan	$	30,495	$	—	$	—	$	29,006	$	—	$	—

Currency derivative assets	$	—	$	5,486	$	—	$	—	$	90	$	—

Liabilities:


Currency derivative liabilities	$	—	$	94	$	—	$	—	$	2,849	$	—

Investments for Deferred Compensation Plan

The marketable securities for the Company's deferred compensation plan were recorded at a fair value of $30.5 million and $29.0 million as of March 31, 2026 and 2025, respectively, based on quoted market prices. Quoted market prices are observable inputs that are classified as Level 1 within the fair value hierarchy. Unrealized gains (losses) related to marketable securities for fiscal years 2026, 2025 and 2024 were not material and were included in other income (expense), net (see Note 6) and corresponding changes in the deferred compensation liability were included in operating expenses and cost of goods sold, in the Company's consolidated statements of operations.

Equity Method Investments

The Company has certain non-marketable investments included in other assets that are accounted for as equity method investments, with a carrying value of $19.1 million and $18.4 million as of March 31, 2026 and 2025, respectively. Income (loss) related to equity method investments for fiscal years 2026, 2025 and 2024 was not material and is included in other income (expense), net in the Company's consolidated statements of operations (see Note 6). There was no impairment of equity method investments during fiscal years 2026, 2025, and 2024.

Assets Measured at Fair Value on a Nonrecurring Basis

Financial Assets. The Company has certain equity investments without readily determinable fair values due to the absence of quoted market prices, the inherent lack of liquidity, and the fact that inputs used to measure fair value are unobservable and require management's judgment. When certain events or circumstances indicate that impairment may exist, the Company revalues the investments using various assumptions, including the financial metrics and ratios of comparable public companies. The carrying value is also adjusted for observable price changes with the same or similar security from the same issuer. The amount of these equity investments without readily determinable fair value included in other assets was $8.8 million as of March 31, 2026 and 2025. There was no impairment of these equity investments during fiscal year 2026. The impairment charges related to these investments were not material during fiscal years 2025 and 2024.

During fiscal year 2024, the Company recorded an impairment loss, before tax, of $9.6 million as a result of the write-off of a note receivable which was deemed no longer recoverable. This note receivable was previously obtained in conjunction with an exchange transaction related to the Company's investment in a privately held company. The impairment loss is included in other income (expense), net, in the Company's consolidated statement of operations for the fiscal year 2024.

Non-Financial Assets. Goodwill, intangible assets, and property, plant and equipment, are not required to be measured at fair value on a recurring basis. However, if the Company is required to evaluate these non-financial assets for impairment, whether due to certain triggering events or because of the required annual impairment test, and a resulting impairment is recorded to reduce the carrying value to the fair value, the non-financial assets are measured at fair value during such period. See Note 2 for additional information about how the Company tests various asset classes for impairment. During fiscal year 2024, the Company recorded impairment charges of $3.5 million related to intangible assets. There was no impairment of non-financial assets during fiscal years 2026 and 2025.

Derivative Financial Instruments

12 Months Ended

Mar. 31, 2026

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivative Financial Instruments

Under certain agreements with the respective counterparties to the Company's derivative contracts, subject to applicable requirements, the Company is allowed to net settle transactions of the same type with a single net amount payable by one party to the other. However, the Company presents its derivative assets and derivative liabilities on a gross basis. Based on maturity, derivative assets are included in other current assets or other assets and derivative liabilities are included in accrued and other current liabilities or other non-current liabilities on the consolidated balance sheets. See Note 9 for the fair values of the Company’s derivative instruments as of March 31, 2026 and 2025.

Cash Flow Hedges

The Company enters into cash flow hedge contracts, including foreign currency forward contracts and foreign currency option contracts, to protect against exchange rate exposure of forecasted inventory purchases. Previously, the hedge contracts covered inventory purchases within four months. Beginning in fiscal year 2026, they cover inventory purchases up to sixteen months, with reduced coverage beyond four months. Gains and losses in the fair value of the effective portion of the hedges are deferred as a component of accumulated other comprehensive income (loss) until the hedged inventory purchases are sold, at which time the gains or losses are reclassified to cost of goods sold. Cash flows from such hedges are classified as operating activities in the consolidated statements of cash flows. Hedging relationships are discontinued when the hedging contract is no longer eligible for hedge accounting, or is sold, terminated or exercised, or when the Company removes hedge designation for the contract. Gains and losses in the fair value of the effective portion of the discontinued hedges continue to be reported in accumulated other comprehensive income (loss) until the hedged inventory purchases are sold, unless it is probable that the forecasted inventory purchases will not occur by the end of the originally specified time period or within an additional two-month period of time thereafter.

The notional amounts of foreign currency exchange contracts outstanding related to forecasted inventory purchases were $447.9 million and $74.6 million as of March 31, 2026 and 2025, respectively. The Company had $1.9 million of net gain related to its cash flow hedges included in accumulated other comprehensive loss as of March 31, 2026, which will be reclassified into earnings within the next twelve months.

The following table presents the amounts of gain (loss) on the Company's derivative instruments designated as hedging instruments for fiscal years 2026, 2025 and 2024 and their locations on its consolidated statements of operations and consolidated statements of comprehensive income (in thousands):


	Amount of Gain (Loss) Deferred as a Component of Accumulated Other Comprehensive Loss						Amount of Loss (Gain) Reclassified from Accumulated Other Comprehensive Loss to Cost of Goods Sold
	2026		2025		2024		2026		2025		2024

Cash flow hedges	$	(8,214)	$	(703)	$	1,109	$	13,321	$	(3,461)	$	3,964

Other Derivatives

The Company also enters into foreign currency exchange forward and swap contracts to reduce the short-term effects of currency exchange rate fluctuations on certain receivables or payables denominated in currencies other than the functional currencies of its subsidiaries. These contracts generally mature within approximately one month. The primary risk managed by using forward and swap contracts is the currency exchange rate risk. The gains or losses on these contracts are not material and are included in other income (expense), net in the consolidated statements of operations based on the changes in fair value. The notional amounts of these contracts outstanding as of March 31, 2026 and 2025 were $113.0 million and $131.8 million, respectively.

The fair value of all foreign currency exchange forward and swap contracts is determined based on observable market transactions of spot currency rates and forward rates. Cash flows from these contracts are classified as operating activities in the consolidated statements of cash flows.

- Definition

The entire disclosure for derivative instruments and hedging activities including, but not limited to, risk management strategies, non-hedging derivative instruments, assets, liabilities, revenue and expenses, and methodologies and assumptions used in determining the amounts.

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+ Details

Goodwill and Other Intangible Assets

12 Months Ended

Mar. 31, 2026

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Other Intangible Assets

The Company conducts its impairment analysis of goodwill annually at December 31 or more frequently if changes in facts and circumstances indicate that it is more likely than not that the fair value of the Company’s reporting unit may be less than its carrying amount. The Company conducted its annual impairment analysis of goodwill as of December 31, 2025 by performing a qualitative assessment and concluded that it was more likely than not that the fair value of its reporting unit exceeded its carrying amount. There have been no triggering events identified affecting the valuation of goodwill subsequent to the annual impairment test.

The following table summarizes the activities in the Company's goodwill balance (in thousands):


	Years Ended March 31,
	2026		2025
Beginning of the period	$	463,230	$	461,978

Effects of foreign currency translation	2,187		1,252
End of the period	$	465,417	$	463,230

The Company's acquired intangible assets were as follows (in thousands):


	March 31,
	2026						2025
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Trademarks and trade names	$	32,390	$	(30,569)	$	1,821	$	32,390	$	(28,675)	$	3,715
Developed technology	107,550		(103,307)		4,243		107,421		(96,464)		10,957
Customer contracts/relationships	69,087		(63,021)		6,066		69,087		(58,646)		10,441

Effects of foreign currency translation	1,218		(962)		256		(620)		137		(483)
Total	$	210,245	$	(197,859)	$	12,386	$	208,278	$	(183,648)	$	24,630

For fiscal years 2026, 2025 and 2024, amortization expense for intangible assets was $13.3 million, $20.1 million and $21.7 million, respectively. The Company expects that annual amortization expense for fiscal years 2027, 2028, 2029 and 2030 will be $5.9 million, $4.3 million, $1.9 million, and $0.3 million, respectively. The remaining balance of the Company's intangible assets will be fully amortized by 2030.

Financing Arrangements	12 Months Ended
Financing Arrangements	Mar. 31, 2026
Debt Disclosure [Abstract]
Financing Arrangements	Financing Arrangements On January 27, 2025, the Company entered into an unsecured revolving credit facility with a syndicate of banks (the "Credit Agreement"). The Credit Agreement provides a revolving line of credit of up to $750.0 million to the Company including the issuance of letters of credit of up to $100.0 million. The Credit Agreement terminates on January 27, 2030 unless extended in accordance with its terms. The Credit Agreement contains (1) an increase option allowing the Company to secure up to $250.0 million of additional commitments and (2) an extension option to extend the term by one-year which may be exercised no more than two times, subject to certain requirements. Loans under the Credit Agreement are available in U.S. Dollars, Euro, Sterling, Yen, Swiss Francs, Canadian Dollars, Australian Dollars and any other currency agreed to by each lender. Proceeds of loans made under the Credit Agreement may be used for general corporate purposes. The Credit Agreement contains a maximum net debt to adjusted EBITDA ratio, compliance with which is a condition to the Company's ability to borrow. Borrowings under the Credit Agreement will bear interest at a rate determined by reference to benchmark rates plus an applicable spread (ranging from 0% to 1.5%) based on the Company's net leverage ratio or credit rating at the time of the borrowing. Undrawn balances available under the Credit Agreement are subject to commitment fees at the applicable rate determined by reference to the Company's net leverage ratio or credit rating. There has been no borrowing outstanding under the Credit Agreement as of March 31, 2026. In addition, the Company had several uncommitted, unsecured bank lines of credit and letters of credit aggregating to $149.0 million and $172.2 million as of March 31, 2026 and 2025, respectively. There are no financial covenants under the lines of credit with which the Company must comply. There was no borrowing outstanding under the lines of credit as of March 31, 2026 and 2025. As of March 31, 2026 and 2025, the Company had outstanding bank guarantees of $2.1 million and $12.1 million, respectively.

- Definition

The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.

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Reference 23: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

Commitments and Contingencies

12 Months Ended

Mar. 31, 2026

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Product Warranties

Changes in the Company's warranty liabilities for fiscal years 2026 and 2025 were as follows (in thousands):


	Years Ended March 31,
	2026		2025
Beginning of the period	$	49,184	$	44,654
Provision	37,617		44,876
Settlements	(37,411)		(40,316)
Effects of foreign currency translation	852		(30)
End of the period	$	50,242	$	49,184

Indemnifications

The Company indemnifies certain of its suppliers and customers for losses arising from matters such as intellectual property disputes and product safety defects, subject to certain restrictions. The scope of these indemnities varies, but in some instances includes indemnification for damages and expenses, including reasonable attorneys' fees. As of March 31, 2026, no material amounts have been accrued for these indemnification provisions. The Company does not believe, based on historical experience and information currently available, that it is probable that any material amounts will be required to be paid under its indemnification arrangements.

The Company also indemnifies its current and former directors and certain of its current and former officers. Certain costs incurred for providing such indemnification may be recoverable under various insurance policies. The Company is unable to reasonably estimate the maximum amount that could be payable under these arrangements because these exposures are not limited, the obligations are conditional in nature and the facts and circumstances involved in any situation that might arise are variable.

Legal Proceedings

From time to time the Company is involved in claims and legal proceedings that arise in the ordinary course of its business. The Company is currently subject to several such claims and legal proceedings. The Company intends to vigorously defend against them. Management periodically assesses the Company’s liabilities and contingencies in connection with these matters based upon the latest information available. The Company follows ASC ("Accounting Standards Codification") 450, Contingencies, in determining the accounting and disclosure for these contingencies. Based on currently available information, the Company does not believe that resolution of pending matters will have a material adverse effect on its financial condition, cash flows and results of operations. However, litigation is subject to inherent uncertainties, and there can be no assurances that the Company's defenses will be successful or that any such lawsuit or claim would not have a material adverse impact on the Company's business, financial condition, cash flows and results of operations in a particular period. Any claims or proceedings against the Company can have an adverse impact because of defense costs, diversion of management and operational resources, negative publicity and other factors. Any failure to obtain a necessary license or other rights, or litigation arising out of intellectual property claims, could adversely affect the Company's business.

Shareholders' Equity

12 Months Ended

Mar. 31, 2026

Stockholders' Equity Note [Abstract]

Shareholders' Equity

Share Capital

As of March 31, 2026, the Company's nominal share capital is CHF 40.2 million, consisting of 160,784,460 issued shares with a par value of CHF 0.25 each, of which 17,281,896 were held in treasury shares.

The capital band under Swiss law allows a company's board of directors to adjust the company's share capital within a predefined range based on a general authority granted by the company's shareholders. At the 2023 Annual General Meeting ("AGM"), the Company's shareholders approved an amendment to the Company’s Articles of Incorporation to introduce a capital band provision authorizing the Board of Directors to adjust the Company's share capital, without additional shareholder approval, within a range of 155,795,958 registered shares to 190,417,282 registered shares for a five-year period ending on September 13, 2028. At the 2025 AGM, the Company's shareholders approved a renewal of the capital band, setting a new range of 144,706,014 registered shares to 176,862,906 registered shares for a five-year period ending on September 9, 2030. The amendment became effective on October 1, 2025.

In addition, the Company has reserved conditional capital (1) up to 25,000,000 shares for potential issuance for the exercise of rights granted under the Company's employee equity incentive plans, and (2) up to 25,000,000 shares for issuance to cover any conversion rights under any potential future convertible bond issuance.

Share Cancellation

In June 2025, the Company's Board of Directors approved the cancellation of 8.2 million treasury shares, which were repurchased under the 2023 share repurchase program in fiscal year 2025 and the first quarter of fiscal year 2026, for an aggregate cost of $712.2 million. The cancellation became effective in the second quarter of fiscal year 2026, and as a result, both the number of registered shares issued and the number of treasury shares decreased by 8.2 million shares. Upon cancellation of these shares, the Company deducted the par value from registered shares and reflected the excess of share repurchase cost over par value as a reduction to retained earnings.

In September 2024, the Company's Board of Directors approved the cancellation of 4.1 million treasury shares, which were repurchased under the 2023 share repurchase program in fiscal year 2024 for an aggregate cost of $332.1 million. The cancellation became effective in the third quarter of fiscal year 2025, and as a result both the number of registered shares issued and the number of treasury shares decreased by 4.1 million shares. Upon cancellation of these shares, the Company deducted the par value from registered shares and reflected the excess of share repurchase cost over par value as a reduction to retained earnings.

Dividends

Pursuant to Swiss corporate law, the payment of dividends is limited to certain amounts of unappropriated retained earnings (approximately CHF 1,573.5 million, or USD equivalent of $1,966.6 million as of March 31, 2026) and is subject to shareholder approval.

In May 2026, the Board of Directors recommended that the Company pay cash dividends for fiscal year 2026 of CHF 1.36 per share (USD equivalent of approximately $1.70 per share, which would result in a gross aggregate dividend of approximately $243.9 million, based on the exchange rate and shares outstanding, net of treasury shares, on March 31, 2026).

In September 2025, the Company paid gross cash dividends of CHF 1.26 (USD equivalent of $1.58) per common share, totaling $233.1 million on the Company's outstanding common shares. In September 2024, the Company paid cash dividends of CHF 1.16 (USD equivalent of $1.37) per common share, totaling $207.9 million on the Company’s outstanding common shares. In September 2023, the Company paid cash dividends of CHF 1.06 (USD equivalent of $1.16) per common share, totaling $182.3 million on the Company's outstanding common shares.

Any future dividends will be subject to the approval of the Company's shareholders.

Legal Reserves

Under Swiss corporate law, a minimum of 5% of the Company's annual net income must be retained in a legal reserve until this legal reserve equals 20% of the Company's issued and outstanding aggregate par value per share capital. These legal reserves represent an appropriation of retained earnings that are not available for distribution and totaled $12.0 million at March 31, 2026 (based on the exchange rate at March 31, 2026).

Share Repurchases

2020 Share Repurchase Program

In May 2020, the Company's Board of Directors approved the 2020 share repurchase program, which authorized the Company to use up to $250.0 million to purchase Logitech shares to support equity incentive plans or potential acquisitions. Shares may be repurchased from time to time on the open market, through block trades or otherwise. Purchases may be started or stopped at any time without prior notice depending on market conditions and other factors. In 2021 and 2022, the Company's Board of Directors approved increases to the 2020 share repurchase program, to an aggregate amount of up to $1.5 billion. The 2020 share repurchase program expired on July 27, 2023.

2023 Share Repurchase Program

In June 2023, the Company's Board of Directors approved a three-year share repurchase program, which allows the Company to use up to $1.0 billion to repurchase its shares. The 2023 share repurchase program enables the Company to repurchase shares for cancellation, as well as to support equity incentive plans or potential acquisitions. The Swiss Takeover Board approved the 2023 share repurchase program in July 2023 and the program became effective on July 28, 2023. In March 2025, the Company's Board of Directors approved an increase of $600.0 million to the 2023 share repurchase program, to an aggregate amount of $1.6 billion. The Swiss Takeover Board approved this increase in April 2025 and it became effective on April 2, 2025. As of March 31, 2026, $91.8 million was available for repurchase under the 2023 share repurchase program.

2026 Share Repurchase Program

In March 2026, the Company's Board of Directors approved a new three-year share repurchase program to repurchase shares up to an aggregate amount of $1.4 billion, or a maximum of 16,078,446 shares. The 2026 share repurchase program enables the Company to repurchase shares for cancellation, as well as to support equity incentive plans or potential acquisitions. The program became effective on May 8, 2026, following approval from the Swiss Takeover Board and the completion of the 2023 share repurchase program.

The following table summarizes the Company's share repurchase activities for fiscal years 2026, 2025 and 2024 (in thousands):


	Years Ended March 31,
	2026		2025		2024
2023 Share Repurchase Program:
Number of shares repurchased (1)	6,167		6,679		4,459
Aggregate cost of shares repurchased (1) (2)	$	557,043	$	588,028	$	364,639

2020 Share Repurchase Program:
Number of shares repurchased (3)	—		—		2,641
Aggregate cost of shares repurchased	$	—	$	—	$	159,112

(1) In fiscal years 2026 and 2025, all shares were repurchased for cancellation. In fiscal year 2024, 4.1 million shares in an aggregate cost of $332.1 million were repurchased for cancellation and the remaining shares were repurchased to support equity incentive plans.

(2) Includes an aggregate cost of $40.8 million, $18.7 million, and $19.5 million, respectively, that was not yet paid as of March 31, 2026, 2025 and 2024.

(3) Shares were repurchased to support equity incentive plans.

Swiss law limits a company’s ability to hold or repurchase its own shares. The aggregate par value of all shares held in treasury by the Company and its subsidiaries may not exceed 10% of the share capital of the Company, which for the Company corresponds to approximately 16.1 million registered shares as of March 31, 2026. This limitation does not apply to shares repurchased for cancellation, due to the Board of Directors’ authority under the Company’s capital band set forth in the Company’s Articles of Incorporation. As of March 31, 2026, the Company had a total of 17.3 million shares held in treasury stock, which includes 4.7 million shares that have been repurchased for cancellation and 12.6 million shares that have been purchased to support equity incentive plans or potential acquisitions.

To the extent that the shares are repurchased to support equity incentive plans or potential acquisitions, the shares are repurchased on the ordinary trading line of the SIX Swiss Exchange and/or the Nasdaq Global Select Market. Shares repurchased for cancellation purposes are repurchased on a second trading line on the SIX Swiss Exchange. Shares may be repurchased from time to time on the open market or in privately negotiated transactions, including under plans complying with the provisions of Rule 10b5-1 and Rule 10b-18 of the Securities Exchange Act of 1934, as amended. Purchases may be started or stopped at any time without prior notice depending on market conditions and other factors and the program does not require the purchase of any minimum number of shares.

Accumulated Other Comprehensive Loss

The components of accumulated other comprehensive loss were as follows (in thousands):



	Currency Translation Adjustment		Defined Benefit Plans		Deferred Hedging Gains (Losses)		Total
March 31, 2025	$	(118,652)	$	(25,276)	$	(3,024)	$	(146,952)
Other comprehensive income (loss)	24,496		3,532		5,107		33,135
March 31, 2026	$	(94,156)	$	(21,744)	$	2,083	$	(113,817)

- Definition

The entire disclosure for equity.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

Segment Information

12 Months Ended

Mar. 31, 2026

Segment Reporting [Abstract]

Segment Information

The Company manages its business activities on a consolidated basis and operates as a single operating segment: Peripherals. The operating segment encompasses the design, manufacturing and sales of peripherals for gaming, PCs, tablets, video conferencing, and other digital platforms. The Company's Chief Operating Decision Maker (the “CODM”) is the Chief Executive Officer. The CODM periodically reviews information such as sales and net income to make business decisions and evaluate performance. The CODM uses net income to evaluate income generated from segment assets (return on assets) in deciding whether to reinvest profits into the Peripherals segment or into other parts of the entity, such as for acquisitions, share repurchase or to pay dividends. The CODM also monitors budget versus actual net income results.

The following table presents segment revenue, gross profit, and net income for the periods presented:


	Years Ended March 31,
	2026		2025		2024
Net sales	$	4,840,761	$	4,554,900	$	4,298,467
Less: Significant segment expenses
Cost of goods sold (1)	2,731,776		2,572,724		2,501,414
Marketing and selling (1)	774,098		774,036		694,530
Research and development (1)	293,317		288,828		269,407
General and administrative (1)	130,809		144,680		133,787
Less: other segment items
Share-based compensation expense	112,392		89,913		82,889
Amortization of intangible assets and acquisition-related costs	13,315		20,249		21,962
Interest income	(48,246)		(54,997)		(50,636)
Other (2)	6,781		12,595		23,518
Provision for income taxes	115,332		75,343		9,453
Net income	$	711,187	$	631,529	$	612,143

(1) The difference between the amounts included in the table above and the amounts included in the consolidated

statements of operations is related to share-based compensation expense (see Note 4).

(2) Includes restructuring charges, net, impairment of intangible assets, change in fair value of contingent

consideration for business acquisition, and other income (expense), net, as applicable.

Sales by product category for fiscal years 2026, 2025 and 2024 were as follows (in thousands):


	Years Ended March 31,
	2026		2025		2024
Gaming (1)	$	1,414,206	$	1,338,467	$	1,231,063
Keyboards & Combos	937,551		882,643		821,441
Pointing Devices	858,904		788,784		742,987
Video Collaboration	689,040		626,000		609,361
Webcams	326,172		315,520		325,225
Tablet Accessories	336,189		299,540		254,060
Headsets	179,825		179,710		168,478
Other (2)	98,874		124,236		145,852
Total Sales	$	4,840,761	$	4,554,900	$	4,298,467

(1) Gaming includes streaming services revenue generated by Streamlabs.

(2) Other primarily consists of mobile speakers and PC speakers.

Sales by geographic region (based on the customers' locations) for fiscal years 2026, 2025 and 2024 were as follows (in thousands):


	Years Ended March 31,
	2026		2025		2024
Americas	$	1,955,191	$	1,973,374	$	1,896,258
EMEA	1,539,065		1,413,855		1,301,515
Asia Pacific	1,346,505		1,167,671		1,100,694
Total Sales	$	4,840,761	$	4,554,900	$	4,298,467

Revenue from sales to customers in the United States represented 33%, 35% and 36% of sales in fiscal years 2026, 2025 and 2024, respectively. Revenue from sales to customers in Germany represented 12%, 12% and 14% of sales in fiscal years 2026, 2025 and 2024, respectively. Revenue from sales to customers in China represented 12%, 10% and 10% of sales in fiscal years 2026, 2025 and 2024, respectively. No other country represented more than 10% of sales during these periods presented herein. Revenue from sales to customers in Switzerland, the Company's country of domicile, represented 4%, 3%, and 2% of sales for fiscal year 2026, 2025 and 2024, respectively.

Property, plant and equipment, net (excluding software) and right-of-use assets by geographic region were as follows (in thousands):


	March 31,
	2026		2025
Americas	$	59,103	$	61,521
EMEA	48,119		47,874
Asia Pacific	65,089		60,710
Total	$	172,311	$	170,105

Property, plant and equipment, net (excluding software) and right-of-use assets in the United States and China were $57.6 million and $48.0 million, respectively, as of March 31, 2026. Property, plant and equipment, net (excluding software) and right-of-use assets in the United States and China were $60.0 million and $43.4 million, respectively, as of March 31, 2025. Property, plant and equipment, net (excluding software) and right-of-use assets in Switzerland, the Company's country of domicile, were $25.0 million and $24.1 million as of March 31, 2026 and 2025, respectively. No other countries represented more than 10% of the Company's total consolidated property, plant and equipment, net (excluding software) and right-of-use assets as of March 31, 2026 or 2025.

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

Restructuring

12 Months Ended

Mar. 31, 2026

Restructuring and Related Activities [Abstract]

Restructuring

During the second quarter of fiscal year 2023, the Company initiated a restructuring plan to realign its business group and engineering structure with its go-to-market strategy to more effectively compete within the enterprise market and to better serve end-users. During the fourth quarter of fiscal year 2023, the Company undertook further actions to remove organization layers as well as streamline its marketing organization to increase efficiency. These actions resulted in charges related to employee severance and other termination benefits as well as contract termination and other costs. These restructuring activities were substantially completed during fiscal year 2024.

During the fourth quarter of fiscal year 2025, the Company initiated a restructuring plan to reorganize certain functions to enable increased productivity and efficiency. This plan resulted in charges related to employee severance and other termination benefits. The Company has substantially completed these restructuring activities as of March 31, 2026.

The following table summarizes restructuring-related activities during fiscal years 2026, 2025 and 2024 (in thousands):



	Termination Benefits		Contract Termination and Other		Total






Accrued restructuring liability at March 31, 2023 (1)	$	14,177	$	5,357	$	19,534
Charges, net	6,011		(2,145)		3,866
Cash payments	(18,375)		(1,757)		(20,132)
Accrued restructuring liability at March 31, 2024 (1)	$	1,813	$	1,455	$	3,268
Charges, net	9,846		(231)		9,615
Cash payments	(2,562)		(241)		(2,803)
Accrued restructuring liability at March 31, 2025 (1)	$	9,097	$	983	$	10,080
Charges, net	7,584		2,276		9,860
Cash payments	(13,558)		(2,299)		(15,857)
Accrued restructuring liability at March 31, 2026 (1)	$	3,123	$	960	$	4,083

(1) The accrual balances are included in accrued and other current liabilities on the Company’s consolidated balance sheets.

Leases

12 Months Ended

Mar. 31, 2026

Leases [Abstract]

Leases

The Company is a lessee in various non-cancelable operating leases, primarily real estate facilities for office space. As of March 31, 2026, the Company's lease arrangements are comprised of operating leases with various expiration dates through August 31, 2036. The lease term for all of the Company’s leases includes the non-cancelable period of the lease. Certain lease agreements include options to renew or terminate the lease, which are not reasonably certain to be exercised and therefore are not factored into the Company's determination of the duration of the lease arrangement. The Company's leases do not contain any material residual value guarantees.

The total operating lease costs including short-term lease costs were $19.1 million, $19.3 million and $19.5 million for the years ended March 31, 2026, 2025, and 2024, respectively. Total variable lease costs were not material during the years ended March 31, 2026, 2025 and 2024. The total operating and variable lease costs were included in cost of goods sold, marketing and selling, research and development, and general and administrative in the Company's consolidated statements of operations.

Supplemental cash flow information related to operating leases (in thousands):


	Years Ended March 31,
	2026		2025		2024
Cash paid for amounts included in the measurement of operating lease liabilities	$	18,056	$	16,847	$	13,489
ROU assets obtained in exchange for operating lease liabilities	$	6,902	$	26,767	$	8,593

Future lease payments included in the measurement of operating lease liabilities as of March 31, 2026 for the following five fiscal years and thereafter are as follows (in thousands):


Years Ending March 31,
2027	$	18,222
2028	14,786
2029	14,242
2030	12,261
2031	10,496
Thereafter	29,549
Total lease payments	$	99,556
Less: imputed interest	(11,401)
Present value of lease liabilities	$	88,155

Weighted-average lease terms and discount rates were as follows:


	Years Ended March 31,
	2026		2025
Weighted-average remaining lease terms (in years)	6.9		7.6
Weighted-average discount rate	3.6	%	3.6	%

Schedule II - VALUATION AND QUALIFYING ACCOUNTS

12 Months Ended

Mar. 31, 2026

SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]

Schedule II - VALUATION AND QUALIFYING ACCOUNTS

VALUATION AND QUALIFYING ACCOUNTS

For the Fiscal Years Ended March 31, 2026, 2025 and 2024 (in thousands)

The Company's Schedule II includes valuation and qualifying accounts related to allowances for doubtful accounts, sales returns, cooperative marketing arrangements, customer incentive programs, and pricing programs, for direct customers and tax valuation allowances. The Company also has sales incentive programs for indirect customers with whom it does not have a direct sales and receivable relationship. These programs are recorded as accrued liabilities and are not considered valuation or qualifying accounts.


	Balance at Beginning of Year		Charged (Credited) to Statement of Operations (1)		Claims and Adjustments Applied Against Allowances (1)		Balance at End of Year








Allowance for cooperative marketing arrangements:
2026	$	44,457	$	305,257	$	(299,750)	$	49,964
2025	$	41,634	$	257,940	$	(255,117)	$	44,457
2024	$	40,495	$	232,837	$	(231,698)	$	41,634
Allowance for customer incentive programs:
2026	$	66,564	$	368,668	$	(361,233)	$	73,999
2025	$	60,027	$	337,039	$	(330,502)	$	66,564
2024	$	71,645	$	299,351	$	(310,969)	$	60,027
Allowance for pricing programs:
2026	$	105,876	$	931,144	$	(892,220)	$	144,800
2025	$	91,280	$	760,024	$	(745,428)	$	105,876
2024	$	98,822	$	707,954	$	(715,496)	$	91,280
Other allowances:
2026	$	37,250	$	148,558	$	(167,972)	$	17,836
2025	$	10,180	$	170,495	$	(143,425)	$	37,250
2024	$	10,232	$	141,909	$	(141,961)	$	10,180
Tax valuation allowance:
2026	$	36,537	$	385	$	—	$	36,922
2025	$	35,536	$	1,000	$	—	$	36,537
2024	$	30,766	$	4,770	$	—	$	35,536

(1) The amounts for fiscal year 2024 include immaterial impacts from the business acquisitions during the year.

Insider Trading Arrangements	3 Months Ended
Insider Trading Arrangements	Mar. 31, 2026
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

Insider Trading Policies and Procedures	12 Months Ended
Insider Trading Policies and Procedures	Mar. 31, 2026
Insider Trading Policies and Procedures [Line Items]
Insider Trading Policies and Procedures Adopted	true

Cybersecurity Risk Management and Strategy Disclosure	12 Months Ended
Cybersecurity Risk Management and Strategy Disclosure	Mar. 31, 2026
Cybersecurity Risk Management, Strategy, and Governance [Line Items]
Cybersecurity Risk Management Processes for Assessing, Identifying, and Managing Threats [Text Block]	We have established a Security Governance Framework that defines roles and responsibilities, so that security is taken into account at all levels and in every department or function of the Company. Our framework provides guidance for the organization, governance and implementation of security across the company. Logitech and its infrastructure have been certified for compliance with ISO 27001, an international standard for information security management. Identifying and assessing cybersecurity risks is integrated into our enterprise risk management. As part of our risk management program, we continuously assess risks from third parties, including vendors, suppliers, and other business partners associated with our use of third-party service providers. We have implemented incident response and breach management processes that include the following steps: mobilizing the right stakeholders and containing the attack, maintaining trust with all affected stakeholders and understanding the attack, recovering the most critical business operations, and learning from the attack. We also conduct tabletop exercises to, among other things, align activities and expectations in connection with our incident response processes, discuss strategic questions, and review third party recommendations. We have not previously experienced a cybersecurity event that was determined to be material, and our business strategy, results of operations and financial condition have not been materially affected by risks from cybersecurity threats. In the fall of 2025, we experienced a cybersecurity incident relating to the exfiltration of data, which we believe will not have a material adverse effect on our financial condition or results of operations. However, there can be no assurance that any future, or yet undiscovered, incident will not have a material impact on us, individually or in the aggregate. For additional information regarding risks from cybersecurity threats, please refer to Item 1A "Risk Factors" in this Annual Report on Form 10-K.
Cybersecurity Risk Management Processes Integrated [Flag]	true
Cybersecurity Risk Management Processes Integrated [Text Block]	We have established a Security Governance Framework that defines roles and responsibilities, so that security is taken into account at all levels and in every department or function of the Company. Our framework provides guidance for the organization, governance and implementation of security across the company. Logitech and its infrastructure have been certified for compliance with ISO 27001, an international standard for information security management.
Cybersecurity Risk Management Third Party Engaged [Flag]	true
Cybersecurity Risk Third Party Oversight and Identification Processes [Flag]	true
Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Flag]	false
Cybersecurity Risk Board of Directors Oversight [Text Block]	Logitech’s Board of Directors oversees risk management and reviews Logitech security risks, controls and procedures. The Board of Directors is assisted in its role by each of the Audit Committee and the Technology and Innovation Committee. The Audit Committee is responsible for the oversight of risks from cybersecurity threats. Members of the Audit Committee receive updates on a semi-annual basis from our Chief Information Security Officer (“CISO”) regarding matters of cybersecurity. The Technology and Innovation Committee periodically reviews the Company’s cybersecurity, information security and other technology risks, controls and procedures, including product security and related threats. Finally, the Board has formed a Cyber Crisis Subcommittee tasked with overseeing any future significant cybersecurity crisis.
Cybersecurity Risk Board Committee or Subcommittee Responsible for Oversight [Text Block]	Our Security Team is responsible for evaluating, reporting and advising about security threats and risks, defining and leading the enterprise security program to protect Logitech business against security threats, maintaining and updating the security framework, monitoring the level of compliance with the security framework across Logitech digital assets, products and services, providing enterprise-wide security services, defining security policies, standards and guidelines, advising on secure architectures, performing assessments and due diligence checks internally and with business partners, providing security guidance for digital projects, creating and deploying security training programs, managing security incidents and breaches, and conducting threat intelligence and managing vulnerabilities.
Cybersecurity Risk Process for Informing Board Committee or Subcommittee Responsible for Oversight [Text Block]	Our Security Team is responsible for evaluating, reporting and advising about security threats and risks, defining and leading the enterprise security program to protect Logitech business against security threats, maintaining and updating the security framework, monitoring the level of compliance with the security framework across Logitech digital assets, products and services, providing enterprise-wide security services, defining security policies, standards and guidelines, advising on secure architectures, performing assessments and due diligence checks internally and with business partners, providing security guidance for digital projects, creating and deploying security training programs, managing security incidents and breaches, and conducting threat intelligence and managing vulnerabilities. Our Security Team also monitors security through the entire software and product development lifecycle. The Head of Application and Product Security is accountable for the release or deployment approval of a product based upon the review of internal and external validation (functionality, performance, security) reports.
Cybersecurity Risk Role of Management [Text Block]	Management’s Role in Assessing and Managing Material Risks from Cybersecurity Threats Our Security Team is responsible for evaluating, reporting and advising about security threats and risks, defining and leading the enterprise security program to protect Logitech business against security threats, maintaining and updating the security framework, monitoring the level of compliance with the security framework across Logitech digital assets, products and services, providing enterprise-wide security services, defining security policies, standards and guidelines, advising on secure architectures, performing assessments and due diligence checks internally and with business partners, providing security guidance for digital projects, creating and deploying security training programs, managing security incidents and breaches, and conducting threat intelligence and managing vulnerabilities. Our Security Team also monitors security through the entire software and product development lifecycle. The Head of Application and Product Security is accountable for the release or deployment approval of a product based upon the review of internal and external validation (functionality, performance, security) reports. The Security Team, which is part of the Digital Office organization, is led by the CISO, who has 20 years of security experience across different industries. The CISO reports to our Head of Digital Office, who has more than 20 years of experience leading software and infrastructure teams, including over a decade in the cybersecurity industry. Our security is managed based on industry-leading standards such as ISO 27001, National Institute of Standards and Technology ("NIST"), Center for Internet Security ("CIS"), Open Worldwide Application Security Project ("OWASP") Application Security Verification Standard ("ASVS") and the Software Assurance Maturity Model ("SAMM"). Our CISO and the Head of Digital Office regularly report on cybersecurity to the Audit Committee and/or the Technology and Innovation Committee and the Board of Directors.
Cybersecurity Risk Management Positions or Committees Responsible [Flag]	true
Cybersecurity Risk Management Positions or Committees Responsible [Text Block]	Our Security Team is responsible for evaluating, reporting and advising about security threats and risks, defining and leading the enterprise security program to protect Logitech business against security threats, maintaining and updating the security framework, monitoring the level of compliance with the security framework across Logitech digital assets, products and services, providing enterprise-wide security services, defining security policies, standards and guidelines, advising on secure architectures, performing assessments and due diligence checks internally and with business partners, providing security guidance for digital projects, creating and deploying security training programs, managing security incidents and breaches, and conducting threat intelligence and managing vulnerabilities.
Cybersecurity Risk Management Expertise of Management Responsible [Text Block]	Our Security Team is responsible for evaluating, reporting and advising about security threats and risks, defining and leading the enterprise security program to protect Logitech business against security threats, maintaining and updating the security framework, monitoring the level of compliance with the security framework across Logitech digital assets, products and services, providing enterprise-wide security services, defining security policies, standards and guidelines, advising on secure architectures, performing assessments and due diligence checks internally and with business partners, providing security guidance for digital projects, creating and deploying security training programs, managing security incidents and breaches, and conducting threat intelligence and managing vulnerabilities.
Cybersecurity Risk Process for Informing Management or Committees Responsible [Text Block]	Our Security Team is responsible for evaluating, reporting and advising about security threats and risks, defining and leading the enterprise security program to protect Logitech business against security threats, maintaining and updating the security framework, monitoring the level of compliance with the security framework across Logitech digital assets, products and services, providing enterprise-wide security services, defining security policies, standards and guidelines, advising on secure architectures, performing assessments and due diligence checks internally and with business partners, providing security guidance for digital projects, creating and deploying security training programs, managing security incidents and breaches, and conducting threat intelligence and managing vulnerabilities. Our Security Team also monitors security through the entire software and product development lifecycle. The Head of Application and Product Security is accountable for the release or deployment approval of a product based upon the review of internal and external validation (functionality, performance, security) reports. The Security Team, which is part of the Digital Office organization, is led by the CISO, who has 20 years of security experience across different industries. The CISO reports to our Head of Digital Office, who has more than 20 years of experience leading software and infrastructure teams, including over a decade in the cybersecurity industry. Our security is managed based on industry-leading standards such as ISO 27001, National Institute of Standards and Technology ("NIST"), Center for Internet Security ("CIS"), Open Worldwide Application Security Project ("OWASP") Application Security Verification Standard ("ASVS") and the Software Assurance Maturity Model ("SAMM").
Cybersecurity Risk Management Positions or Committees Responsible Report to Board [Flag]	true

Summary of Significant Accounting Policies (Policies)	12 Months Ended
Summary of Significant Accounting Policies (Policies)	Mar. 31, 2026
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The consolidated financial statements include the accounts of Logitech and its subsidiaries. All intercompany balances and transactions have been eliminated. The consolidated financial statements are presented in accordance with accounting principles generally accepted in the United States ("U.S. GAAP").
Fiscal Year	Fiscal Year The Company's fiscal year ends on March 31. Interim quarters are generally thirteen-week periods, each ending on a Friday. For purposes of presentation, the Company has indicated its quarterly periods end on the last day of the calendar quarter.
Reference to Sales	Reference to Sales References to "sales" in the Notes to the consolidated financial statements means net sales, except as otherwise specified.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with U.S. GAAP requires management to make judgments, estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Management bases its estimates on historical experience and various other assumptions believed to be reasonable. Significant estimates and assumptions made by management involve the fair value of goodwill and intangible assets acquired from business acquisitions, pension obligations, accruals for customer incentives, cooperative marketing, and pricing programs ("Customer Programs") and related breakage when appropriate, inventory valuation, share-based compensation expense, uncertain tax positions, and valuation allowances for deferred tax assets. Although these estimates are based on management’s best knowledge of current events and actions that may impact the Company in the future, actual results could differ materially from those estimates.
Risks and Uncertainties	Risks and Uncertainties Impacts of Macroeconomic, Geopolitical, and Other Factors on the Company's Business As the Company conducts operations globally, its business has continued to be impacted by ongoing macroeconomic and geopolitical conditions. These conditions include changes in inflation, interest rate and foreign currency fluctuations, uncertainty in consumer and enterprise demand, tariff and trade policies, memory chip availability, volatile energy prices and increased geopolitical tensions, including the armed conflicts in the Middle East. In 2025, the United States introduced trade policy actions that increased import tariffs across a wide range of countries at various rates, with certain exemptions. In February 2026, the U.S. Supreme Court issued a decision invalidating certain tariffs previously imposed under the International Emergency Economic Powers Act. In May 2026, some companies began receiving notification from the U.S. Customs and Border Protection (CBP) that tariff refunds would be issued; however, the extent and timing of these tariff refunds remain uncertain. Following the U.S. Supreme Court ruling, the U.S. government introduced new temporary tariffs for a 150-day period beginning February 24, 2026. In May 2026, the U.S. Court of International Trade invalidated these temporary tariffs but they remain in place, subject to appeal. The U.S. government may pursue alternative trade measures, including under Sections 301 and 302 of U.S. trade laws, which could result in additional or replacement tariffs. U.S. tariff policies and international trade arrangements continue to evolve and have had, and may continue to have, a significant impact on the Company's results of operations. The Company has also been affected by the increases in demand for memory chips and other components caused by the build out of new AI technologies and data centers, leading to a rise in prices for such components and some suppliers transitioning capacity away from certain components utilized in some of the Company's Video Collaboration products. The global and regional macroeconomic, political, and other conditions have caused and may continue to cause volatility in demand for the Company's products, component availability, transit times and cost of the Company's products including cost of tariffs, materials, and logistics, and as a result, have impacted and may continue to impact the pricing of the Company's products, product availability and the Company's results of operations.
Currencies	Currencies The functional currency of the Company's operations is primarily the U.S. Dollar. Certain operations use the Euro, Chinese Renminbi, Swiss Franc, or other local currencies as their functional currencies. The financial statements of the Company's subsidiaries whose functional currency is other than the U.S. Dollar are translated to U.S. Dollars using period-end rates of exchange for assets and liabilities and monthly average rates for sales, income and expenses. Cumulative translation gains and losses are included as a component of shareholders' equity in accumulated other comprehensive income (loss). Gains and losses arising from transactions denominated in currencies other than a subsidiary's functional currency are reported in other income (expense), net in the consolidated statements of operations.
Revenue Recognition	Revenue Recognition Revenue is recognized when a customer obtains control of promised goods or services in an amount that reflects the transaction price the Company expects to receive in exchange for those goods or services. Substantially all revenue recognized by the Company relates to the contracts with customers to sell products that allow people to connect through gaming, video, computing, music and other digital platforms. These products are hardware devices, which may include embedded software that function together, and are considered as one performance obligation. Hardware devices are generally plug and play, requiring no configuration and little or no installation. Revenue is recognized at a point in time when control of the products is transferred to the customer which generally occurs upon shipment. The Company’s sales contracts with its customers have a one year or shorter term. The Company also provides post-contract customer support (“PCS”) for certain products and related software, which includes unspecified software updates and upgrades, bug fixes and maintenance. The transaction price is allocated to two performance obligations in such contracts, based on a relative standalone selling price. The transaction price allocated to PCS is recognized as revenue on a straight-line basis, which reflects the pattern of delivery of PCS, over the estimated term of the support. The Company also recognizes revenue from subscription services that provide professional streamers with access to streaming software and tools as well as from Video Collaboration support services. These services represent stand-ready performance obligations. Payments for these services are made at the time of or in advance of delivering the services. The proceeds received in advance from such arrangements are recognized as deferred revenue and then recognized as revenue ratably over the service period up to five years. See Note 8 for the current and non-current deferred revenue associated with the Company’s remaining performance obligations to be recognized within the next 12 months and thereafter, respectively. The Company normally requires payment from customers within thirty to sixty days from the invoice date. However, terms may vary by customer type, by country and by selling season. The Company generally does not modify payment terms on existing receivables. The Company's contracts with customers do not include significant financing components as the period between the satisfaction of performance obligations and timing of payment are generally within one year. The transaction price received by the Company from sales to its distributors, retail companies ("retailers"), and authorized resellers is calculated as selling price net of variable consideration which may include product returns and the Company’s payments for Customer Programs related to current period product revenue. The estimated impact of these programs is recorded as a reduction of transaction price or as an operating expense if the Company receives a distinct good or service from the customer and can reasonably estimate the fair value of that good or service received. Customer Programs require management to estimate the percentage of those programs which will not be claimed in the current period or will not be earned by customers, which is commonly referred to as "breakage." Breakage is estimated based on historical claim experience, the period in which customer claims are expected to be submitted, specific terms and conditions with customers and other factors. The Company accounts for breakage as part of variable consideration, subject to constraint, and records the estimated impact in the same period when revenue is recognized at the expected value. Assessing the period in which claims are expected to be submitted and the relevance of the historical claim experience require significant management judgment to estimate the breakage of Customer Programs in any accounting period. The Company enters into cooperative marketing arrangements with many of its customers and with certain indirect partners, allowing customers to receive a credit equal to a set percentage of their purchases of the Company's products, or a fixed dollar amount for various marketing and incentive programs. The objective of these arrangements is to encourage advertising and promotional events to increase sales of the Company's products. Customer incentive programs include consumer rebates and performance-based incentives. Consumer rebates are offered to the Company's customers and indirect partners at the Company's discretion for the primary benefit of end-users. In addition, the Company offers performance-based incentives to many of its customers and indirect partners based on predetermined performance criteria. At management's discretion, the Company also offers special pricing discounts to certain customers. Special pricing discounts are usually offered only for limited time periods or for sales of selected products to specific indirect partners. Cooperative marketing arrangements and customer incentive programs are considered variable consideration, which the Company estimates and records as a reduction to revenue at the time of sale based on negotiated terms, historical experiences, forecasted incentives, anticipated volume of future purchases, and inventory levels in the channel. The Company has agreements with certain customers that contain terms allowing price protection credits to be issued in the event of a subsequent price reduction. Management's decision to make price reductions is influenced by product life cycle stage, market acceptance of products, the competitive environment, new product introductions and other factors. Accruals for estimated expected future pricing actions and Customer Programs are recognized at the time of sale based on analyses of historical pricing actions by customer and by product, inventories owned by and located at customers, current customer demand, current operating conditions, and other relevant customer and product information, such as stage of product life-cycle. Product return rights vary by customer. Estimates of expected future product returns qualify as variable consideration and are recorded as a reduction of the transaction price of the contract at the time of sale based on an analysis of historical return trends by customer and by product, inventories owned by and located at customers, current customer demand, current operating conditions, and other relevant customer and product information. The Company assesses the estimated asset for recovery value for impairment and adjusts the value of the asset for any impairment. Return trends are influenced by product life cycle status, new product introductions, market acceptance of products, sales levels, product sell-through, the type of customer, seasonality, product quality issues, competitive pressures, operational policies and procedures, and other factors. Return rates can fluctuate over time but are sufficiently predictable to allow the Company to estimate expected future product returns. Typically, variable consideration does not need to be constrained as estimates are based on predictive historical data or future commitments that are planned and controlled by the Company. However, the Company continues to assess variable consideration estimates such that it is probable that a significant reversal of revenue will not occur. The Company regularly evaluates the adequacy of its estimates for Customer Programs and product returns. Future market conditions and product transitions may require the Company to take action to change such programs and related estimates. When the variables used to estimate these costs change, or if actual costs differ significantly from the estimates, the Company would be required to increase or reduce revenue or operating expenses to reflect the impact. During the year ended March 31, 2026, changes to these estimates related to performance obligations satisfied in prior periods were not material. Sales taxes and value-added taxes (“VAT”) collected from customers, if applicable, which are remitted to governmental authorities are not included in revenue, and are reflected as a liability on the consolidated balance sheets. Shipping and Handling Costs The Company's shipping and handling costs are included in the cost of goods sold in the consolidated statements of operations. Contract Balances The Company records accounts receivable from contracts with customers when it has an unconditional right to consideration, as accounts receivable, net, on the consolidated balance sheets. The Company records contract liabilities when cash payments are received or due in advance of performance, primarily for implied support and subscriptions. Contract liabilities are included in accrued and other current liabilities and other non-current liabilities on the consolidated balance sheets. Contract Costs The Company recognizes the incremental costs of obtaining contracts as an expense when incurred if the amortization period of the assets that otherwise would have been recognized is one year or less. These costs are included in marketing and selling expenses in the consolidated statements of operations. As of March 31, 2026 and 2025, the Company did not have any material deferred contract costs.
Research and Development Costs	Research and Development Costs Costs related to research, design and development of products, which consist primarily of personnel, product design and infrastructure expenses, are charged to research and development expense as they are incurred.
Advertising Costs	Advertising Costs Advertising costs are recorded as either a marketing and selling expense or a deduction from revenue as they are incurred. Advertising costs paid or reimbursed by the Company to direct or indirect customers must have an identifiable benefit and an estimable fair value in order to be classified as an operating expense. If these criteria are not met, the payment is classified as a reduction of revenue. Advertising costs recorded as marketing and selling expense are expensed as incurred.
Cash Equivalents	Cash Equivalents The Company classifies all highly liquid instruments purchased, such as bank demand deposits, short-term time deposits, and U.S. Treasury securities, with an original maturity of three months or less at the date of purchase, to be cash equivalents. Cash equivalents are carried at cost, which approximates their fair value.
Concentration of Credit Risk	Concentration of Credit Risk Financial instruments that potentially subject the Company to concentrations of credit risk consist principally of cash and cash equivalents and accounts receivable. The Company maintains cash and cash equivalents with various creditworthy financial institutions and has a policy to limit exposure with any one financial institution, but is exposed to credit risk in the event of default by financial institutions to the extent that cash balances with individual financial institutions are in excess of amounts that are insured. The Company periodically assesses the credit risk associated with these financial institutions. The Company sells to large distributors, retailers, and e-tailers and, as a result, maintains individually significant receivable balances with such customers. The Company manages its accounts receivable credit risk through ongoing credit evaluation of its customers' financial conditions. The Company generally does not require collateral from its customers.
Allowances for Doubtful Accounts	Allowances for Doubtful Accounts Allowances for doubtful accounts are maintained for expected credit losses resulting from the Company's customers' inability to make required payments. The allowances are based on the Company's regular assessment of various factors, including the credit-worthiness and financial condition of specific customers, historical experience with bad debts and customer deductions, receivables aging, current economic conditions, reasonable and supportable forecasts of future economic conditions, and other factors that may affect the Company's ability to collect from customers.
Inventories	Inventories Inventories are stated at the lower of cost and net realizable value. Costs are computed under the standard cost method, which approximates actual costs determined on the first-in, first-out basis. The Company records write-downs of inventories which are obsolete or in excess of anticipated demand or net realizable value based on a consideration of marketability and product life cycle stage, product development plans, component cost trends, historical sales and demand forecasts which consider the assumptions about future demand and market conditions. Inventory on hand which is not expected to be sold or utilized is considered excess, and the Company recognizes the write-down in cost of goods sold at the time of such determination. The write-down is determined by the excess of cost over net realizable value. Net realizable value is the estimated selling price in the ordinary course of business, less reasonably predictable costs of completion, disposal and transportation. At the time of loss recognition, new cost basis per unit and lower-cost basis for that inventory are established and subsequent changes in facts and circumstances would not result in an increase in the cost basis. The Company recorded liabilities arising from firm, non-cancelable, and unhedged inventory purchase commitments in excess of anticipated demand or net realizable value consistent with its valuation of excess and obsolete inventory. Such liability is included in accrued and other current liabilities on the consolidated balance sheets.
Property, Plant and Equipment	Property, Plant and Equipment Property, plant and equipment are stated at cost. Additions and improvements are capitalized, and maintenance and repairs are expensed as incurred. The Company capitalizes the cost of software developed for internal use in connection with major projects. Costs incurred during the preliminary project stage and post implementation stage are expensed, whereas direct costs incurred during the application development stage are capitalized. Depreciation expense is recognized using the straight-line method. Plant and buildings are depreciated over estimated useful lives of twenty-five years, equipment over useful lives from three to five years, internal-use software over useful lives of three years, tooling over useful lives from six months to one year, and leasehold improvements over the lesser of the term of the lease or the estimated useful life of leasehold improvements. When property and equipment is retired or otherwise disposed of, the cost and accumulated depreciation are relieved from the accounts and the net gain or loss is included in cost of goods sold or operating expenses, depending on the nature of the property and equipment.
Leases	Leases The Company determines if an arrangement is a lease or contains a lease at contract inception. The Company determines if a lease is an operating or finance lease and recognizes right-of-use ("ROU") assets and lease liabilities upon lease commencement. Operating lease ROU assets are included in other assets, short-term lease liabilities are included in accrued and other current liabilities, and long-term lease liabilities are included in other non-current liabilities on the Company's consolidated balance sheets. Leases with an initial term of 12 months or less are not recorded on the balance sheet. For the Company's operating leases, the Company accounts for the lease component and related non-lease component as a single lease component. Lease expense is recognized on a straight-line basis over the lease term. For operating leases, the lease liability is initially measured at the present value of the unpaid lease payments at lease commencement date. As most of the leases do not provide an implicit rate, the Company generally uses its incremental borrowing rate as the discount rate for the leases. The Company's incremental borrowing rate is the rate of interest it would have to pay on a collateralized basis to borrow an amount equal to the lease payments under similar terms. Because the Company does not generally borrow on a collateralized basis, it uses its understanding of what its collateralized credit rating would be as an input to deriving an appropriate incremental borrowing rate. The operating lease ROU assets include prepaid lease payments and exclude lease incentives.
Intangible Assets	Intangible Assets The Company's intangible assets include goodwill and intangible assets with finite lives, which primarily include acquired technology and customer contracts and related relationships. Intangible assets with finite lives are carried at cost and amortized using the straight-line method over their useful lives ranging from one to ten years.
Impairment of Long-Lived Assets	Impairment of Long-Lived Assets The Company reviews long-lived assets, such as property and equipment, and finite-lived intangible assets, for impairment whenever events indicate that the carrying amounts might not be recoverable. Recoverability of long-lived assets is measured by comparing the projected undiscounted net cash flows associated with those assets to their carrying values. If an asset is considered impaired, it is written down to its fair value, which is determined based on the asset's projected discounted cash flows or appraised value, depending on the nature of the asset. For purposes of recognition of impairment for assets held for use, the Company groups assets and liabilities at the lowest level for which cash flows are separately identifiable.
Impairment of Goodwill	Impairment of Goodwill Goodwill represents the excess of the purchase price over the fair value of the net tangible and identifiable intangible assets acquired in each business combination. The Company conducts a goodwill impairment analysis annually at December 31 or more frequently if indicators of impairment exist or if a decision is made to sell or exit a business. Significant judgments are involved in determining if an indicator of impairment has occurred. Such indicators may include deterioration in general economic conditions, negative developments in equity and credit markets, adverse changes in the markets in which an entity operates, increases in input costs that have a negative effect on earnings and cash flows, or a trend of negative or declining cash flows over multiple periods, among others. The fair value that could be realized in an actual transaction may differ from that used to evaluate the impairment of goodwill. In reviewing goodwill for impairment, the Company has the option to first assess qualitative factors to determine whether the existence of events or circumstances leads to a determination that it is more likely than not (greater than 50%) that the estimated fair value of a reporting unit is less than its carrying amount. The Company also may elect not to perform the qualitative assessment and, instead, proceed directly to the quantitative impairment test. The ultimate outcome of the goodwill impairment review for a reporting unit should be the same whether the Company chooses to perform the qualitative assessment or proceeds directly to the quantitative impairment test. The Company operates as one reporting unit. For the year ended March 31, 2026, the Company elected to perform a qualitative assessment and concluded that it was more likely than not that the fair value of its reporting unit exceeds its carrying amount.
Income Taxes	Income Taxes The Company provides for income taxes using the asset and liability method, which requires that deferred tax assets and liabilities be recognized for the expected future tax consequences of temporary differences resulting from differing treatment of items for tax and financial reporting purposes, and for operating losses and tax credit carryforwards. In estimating future tax consequences, expected future events are taken into consideration, with the exception of potential tax law or tax rate changes. The Company records a valuation allowance to reduce deferred tax assets to amounts management believes are more likely than not to be realized. The Company's assessment of uncertain tax positions requires that management makes estimates and judgments about the application of tax law, the expected resolution of uncertain tax positions and other matters. In the event that uncertain tax positions are resolved for amounts different than the Company's estimates, or the related statutes of limitations expire without the assessment of additional income taxes, the Company will be required to adjust the amounts of the related assets and liabilities in the period in which such events occur. Such adjustments may have an impact on the Company's income tax provision and its results of operations.
Fair Value of Financial Instruments	Fair Value of Financial Instruments The carrying value of certain of the Company's financial instruments, including cash equivalents, accounts receivable and accounts payable approximates their fair value due to their short maturities. The Company's investment securities portfolio consists of bank demand deposits, short-term time deposits, and U.S. Treasury securities with an original maturity of three months or less and marketable securities (money market and mutual funds) related to a deferred compensation plan. The Company's investments related to the deferred compensation plan are reported at fair value based on quoted market prices. The marketable securities related to the deferred compensation plan are classified as non-current investments, as they are intended to fund the deferred compensation plan's long-term liability. Participants in the deferred compensation plan may select the mutual funds in which their compensation deferrals are invested within the confines of the Rabbi Trust which holds the marketable securities. These securities are recorded at fair value based on quoted market prices. Earnings, gains and losses on deferred compensation investments are included in other income (expense), net in the consolidated statements of operations. The Company also holds certain non-marketable investments that are accounted for as equity method investments and included in other assets in the consolidated balance sheets. In addition, the Company has certain equity investments without readily determinable fair values due to the absence of quoted market prices, the inherent lack of liquidity, and the fact that inputs used to measure fair value are unobservable and require management's judgment. The Company elected the measurement alternative to record these investments at cost and to adjust for impairments and observable price changes resulting from transactions with the same issuer within the statements of operations.
Net Income per Share	Net Income per Share Basic net income per share is computed by dividing net income by the weighted average outstanding shares. Diluted net income per share is computed using the weighted average outstanding shares and dilutive share equivalents. Dilutive share equivalents consist of share-based awards, including stock options, purchase rights under employee share purchase plan, and restricted stock units. The dilutive effect of in-the-money share-based compensation awards is calculated based on the average share price for each fiscal period using the treasury stock method.
Share-Based Compensation Expense	Share-Based Compensation Expense Share-based compensation expense includes compensation expense for share-based awards granted based on the grant date fair value. The grant date fair value for stock options and stock purchase rights is estimated using the Black-Scholes-Merton option-pricing valuation model. The grant date fair value of service-based restricted stock units ("RSUs") is calculated based on the market price on the date of grant, reduced by estimated dividend yield prior to vesting. The grant date fair value of restricted stock units which vest upon meeting certain market- and performance-based conditions ("PSUs") is estimated using the Monte-Carlo simulation method including the effect of the market condition. Share-based compensation expense is recognized ratably over the respective requisite service periods of the awards and forfeitures are accounted for when they occur. For PSUs, the Company recognizes compensation expense using its estimate of probable outcome at the end of the performance period (i.e., the estimated performance against the performance targets). The Company periodically adjusts the cumulative share-based compensation expense recorded when the probable outcome for the PSUs is updated based upon changes in actual and forecasted financial results.
Product Warranty	Product Warranty All of the Company's products are covered by standard warranty to be free from defects in material and workmanship for periods ranging from one year to three years. The warranty period varies by product and by region. The Company’s standard warranty does not provide a service beyond assuring that the product complies with agreed-upon specifications and is not sold separately. The standard warranty the Company provides qualifies as an assurance warranty and is not treated as a separate performance obligation. The Company estimates cost of product warranties at the time the related revenue is recognized based on historical warranty claim rates, historical costs, and knowledge of specific product failures that are outside of the Company's typical experience. The Company accrues a warranty liability for estimated costs to provide products, parts or services to repair or replace products in satisfaction of the warranty obligation. Each quarter, the Company re-evaluates its estimates to assess the adequacy of recorded warranty liabilities. When the Company experiences changes in warranty claim activity or costs associated with fulfilling those claims, the warranty liability is adjusted accordingly.
Comprehensive Income (Loss)	Comprehensive Income (Loss) Comprehensive income (loss) is defined as the total change in shareholders' equity during the period other than from transactions with shareholders. Comprehensive income (loss) consists of net income (loss) and other comprehensive income (loss). Other comprehensive income (loss) is comprised of currency translation adjustments from those entities not using the U.S. Dollar as their functional currency, net deferred gains and losses and prior service costs and credits for defined benefit pension plans, and net deferred gains and losses on hedging activity.
Treasury Shares	Treasury Shares The Company periodically repurchases shares in the market at fair value. Shares repurchased are recorded at cost as a reduction of total shareholders' equity. Treasury shares held may be reissued to satisfy the exercise of employee stock options and purchase rights, the vesting of restricted stock units, and acquisitions, or may be canceled with shareholder approval. Treasury shares that are reissued are accounted for using the first-in, first-out basis. When treasury shares are reissued, gains from re-issuance of treasury shares are credited to additional paid-in capital while losses from re-issuance of treasury shares are charged to additional paid-in capital to the extent that there are previously recorded gains to offset the losses, otherwise charged to retained earnings in the consolidated balance sheets. When treasury shares are canceled, the Company deducts the par value from registered shares and reflects the excess of share repurchase cost over par value as a reduction to retained earnings.
Derivative Financial Instruments	Derivative Financial Instruments The Company enters into foreign exchange forward and swap contracts to reduce the short-term effects of currency fluctuations on certain foreign currency receivables or payables denominated in currencies other than the functional currencies of its subsidiaries. Gains or losses from changes in the fair value of these contracts that offset transaction losses or gains on foreign currency receivables or payables are recognized immediately and included in other income (expense), net in the consolidated statements of operations. The Company enters into cash flow hedge contracts, including foreign currency forward contracts and foreign currency option contracts, to hedge against exposure to changes in currency exchange rates related to its forecasted inventory purchases. Gains and losses for changes in the fair value of the effective portion of the Company's foreign exchange contracts related to forecasted inventory purchases are deferred as a component of accumulated other comprehensive gain (loss) until the hedged inventory purchases are sold, at which time the gains or losses are reclassified to cost of goods sold.
Restructuring Charges	Restructuring Charges The Company's restructuring charges consist of employee severance, one-time termination benefits and ongoing benefits related to the reduction of its workforce, and other costs. Liabilities for costs associated with a restructuring activity are measured at fair value and are recognized when the liability is incurred, as opposed to when management commits to a restructuring plan. One-time termination benefits are expensed at the date the entity notifies the employee, unless the employee must provide future service, in which case the benefits are expensed ratably over the future service period. Ongoing benefits are expensed when restructuring activities are probable and the benefit amounts are estimable. Other costs primarily consist of legal, consulting, and other costs related to employee terminations, and are expensed when incurred. Termination benefits are calculated based on regional benefit practices and local statutory requirements.
Recent Accounting Pronouncements Adopted and New Accounting Pronouncements Not Yet Adopted	Recent Accounting Pronouncements Adopted In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures. ASU 2023-09 requires additional disclosures related to rate reconciliation, income taxes paid, and other disclosures. Under ASU 2023-09, for each annual period presented, public entities are required to (1) disclose specific categories in the tabular rate reconciliation and (2) provide additional information for reconciling items that meet a quantitative threshold. In addition, ASU 2023-09 requires all reporting entities to disclose on an annual basis the amount of income taxes paid disaggregated by federal, state, and foreign taxes as well as the amount of income taxes paid by individual jurisdiction. The Company adopted this ASU in its fiscal year 2026 annual financial statements and applied the standard prospectively. See Note 7 for additional information. New Accounting Pronouncements Not Yet Adopted In November 2024, the FASB issued ASU 2024-03, Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses. ASU 2024-03 requires all public entities to disclose in the notes to the financial statements the amounts of purchases of inventory, employee compensation, depreciation, and intangible asset amortization included in each expense caption of the income statement. ASU 2024-03 is effective for fiscal years beginning after December 15, 2026 and interim periods within fiscal years beginning after December 15, 2027. ASU 2024-03 can be applied either prospectively or retrospectively. Early adoption is permitted. The Company is currently evaluating the impact of ASU 2024-03 on its consolidated financial statements and related disclosures. In July 2025, the FASB issued ASU No. 2025-05, Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses for Accounts Receivable and Contract Assets. ASU 2025-05 provides a practical expedient that permits entities to assume that current conditions as of the balance sheet date will remain unchanged over the remaining life of current accounts receivable and current contract assets when estimating the expected credit losses. ASU 2025-05 is effective for annual periods beginning after December 15, 2025, and interim periods within those annual reporting periods. Early adoption is permitted. ASU 2025-05 should be applied on a prospective basis. The Company does not expect the adoption of ASU 2025-05 to have a material impact on its consolidated financial statements or related disclosures. In September 2025, the FASB issued ASU No. 2025-06, Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40): Targeted Improvements to the Accounting for Internal-Use Software. ASU 2025-06 updates the cost capitalization threshold for internal-use software development costs by removing all references to software project development stages and providing new guidance on how to evaluate whether the probable-to-complete recognition threshold has been met. ASU 2025-06 is effective for annual periods beginning after December 15, 2027, and interim periods within those annual reporting periods. Early adoption is permitted. ASU 2025-06 can be applied on a prospective basis, with retrospective or modified retrospective application permitted. The Company is currently evaluating the impact of ASU 2025-06 on its consolidated financial statements and related disclosures.
Segment Information	Segment InformationThe Company manages its business activities on a consolidated basis and operates as a single operating segment: Peripherals. The operating segment encompasses the design, manufacturing and sales of peripherals for gaming, PCs, tablets, video conferencing, and other digital platforms. The Company's Chief Operating Decision Maker (the “CODM”) is the Chief Executive Officer. The CODM periodically reviews information such as sales and net income to make business decisions and evaluate performance. The CODM uses net income to evaluate income generated from segment assets (return on assets) in deciding whether to reinvest profits into the Peripherals segment or into other parts of the entity, such as for acquisitions, share repurchase or to pay dividends. The CODM also monitors budget versus actual net income results.

Summary of Significant Accounting Policies (Tables)

12 Months Ended

Mar. 31, 2026

Accounting Policies [Abstract]

Schedule of Concentration of Risk

The Company had the following customers that individually comprised 10% or more of its gross sales:


	Years Ended March 31,
	2026		2025		2024
Customer A	14	%	14	%	13	%
Customer B	18	%	19	%	18	%
Customer C	12	%	12	%	14	%

The Company had the following customers that individually comprised 10% or more of its accounts receivable:


	March 31,
	2026		2025
Customer A	16	%	14	%
Customer B	23	%	21	%
Customer C	13	%	10	%

Net Income Per Share (Tables)

12 Months Ended

Mar. 31, 2026

Earnings Per Share [Abstract]

Schedule of Computations of Basic and Diluted Net Income Per Share

The following table summarizes the computations of basic and diluted net income per share for fiscal years 2026, 2025 and 2024 (in thousands except per share amounts):


	Years Ended March 31,
	2026		2025		2024
Net income	$	711,187	$	631,529	$	612,143



Shares used in net income per share computation:
Weighted average shares outstanding - basic	146,775		151,322		156,776
Effect of potentially dilutive equivalent shares	1,433		1,462		1,395
Weighted average shares outstanding - diluted	148,208		152,784		158,171

Net income per share:
Basic	$	4.85	$	4.17	$	3.90
Diluted	$	4.80	$	4.13	$	3.87

Employee Stock-Based Compensation (Tables)

12 Months Ended

Mar. 31, 2026

Share-Based Payment Arrangement [Abstract]

Schedule of Share-Based Compensation Expense and Related Tax Benefit Recognized

The following table summarizes share-based compensation expense and total income tax benefit recognized for fiscal years 2026, 2025 and 2024 (in thousands):


	Years Ended March 31,
	2026		2025		2024
Cost of goods sold	$	10,631	$	10,021	$	8,004
Marketing and selling	42,506		40,378		35,780
Research and development	22,904		20,180		17,836
General and administrative	36,351		19,334		21,269
Total share-based compensation expense	112,392		89,913		82,889

Income tax benefit	(20,721)		(20,148)		(15,305)
Total share-based compensation expense, net of income tax benefit	$	91,671	$	69,765	$	67,584

Schedule of Assumptions Applied for the Fair Value of Market-Based RSUs Using the Monte-Carlo Simulation Method

The grant date fair value of the ESPP using the Black-Scholes-Merton option-pricing valuation model and the grant date fair value of the PSUs using the Monte-Carlo simulation method are determined with the following assumptions:


	Employee Stock Purchase Plans
	Years Ended March 31,
	2026	2025	2024
Expected dividend rate	1.79%	1.35%	1.61%
Risk-free interest rate	3.90%	4.71%	5.36%
Expected volatility	38%	29%	33%
Expected term (years)	0.5	0.5	0.5
Weighted average grant date fair value per share	$23.10	$21.74	$19.02


PSUs	Years Ended March 31,
	2026	2025	2024
Expected dividend rate	1.63%	1.41%	1.90%
Risk-free interest rate	3.90%	4.55%	3.83%
Expected volatility	37%	38%	41%
Expected term (years)	3.0	3.0	3.0

Schedule of Stock Option Activity

A summary of the Company's stock option activities under all stock plans for fiscal years 2026, 2025 and 2024 is as follows:


	Number of Shares	Weighted-Average Exercise Price		Weighted-Average Remaining Contractual Term	Aggregate Intrinsic Value
	(In thousands)			(Years)	(In thousands)
Outstanding, March 31, 2023	1,120
Exercised	(181)				$	6,160
Forfeited	(176)

Outstanding, March 31, 2024	763

Exercised	(111)				$	1,483
Forfeited	(65)
Outstanding, March 31, 2025	587	$	64	5.3	$	11,768
Exercised	(129)	$	67		$	4,371
Outstanding, March 31, 2026	458	$	64	4.7	$	12,500
Vested and exercisable, March 31, 2026	458	$	64	4.7	$	12,500

Schedule of Time, Market and Performance-Based RSU Activity

A summary of the Company's RSU and PSU activities for fiscal years 2026, 2025 and 2024 is as follows:


	Number of Shares	Weighted-Average Grant Date Fair Value		Aggregate Fair Value
	(In thousands)			(In thousands)
Outstanding, March 31, 2023	3,456	$	66
Granted—RSUs	1,396	$	59
Granted—PSUs	457	$	67
Vested	(1,200)			$	92,340
Forfeited	(631)
Outstanding, March 31, 2024	3,478	$	65
Granted—RSUs	931	$	93
Granted—PSUs	281	$	91
Vested	(1,172)			$	113,553
Forfeited	(462)
Outstanding, March 31, 2025	3,056	$	73
Granted—RSUs	1,017	$	84
Granted—PSUs	275	$	90
Vested	(895)	$	72	$	78,466
Forfeited	(512)	$	72
Outstanding, March 31, 2026	2,941	$	79

Employee Benefit Plans (Tables)

12 Months Ended

Mar. 31, 2026

Schedule of Net Periodic Benefit Costs

The net periodic benefit cost of the defined benefit pension plans and the non-retirement post-employment benefit obligations for fiscal years 2026, 2025 and 2024 was as follows (in thousands):


	Years Ended March 31,
	2026		2025		2024
Service costs	$	13,708	$	11,875	$	11,479
Interest costs	3,564		3,298		3,844
Expected return on plan assets	(9,674)		(7,671)		(6,950)
Amortization:

Net prior service cost (credit) recognized	(658)		309		(500)
Net actuarial loss (gain) recognized	919		450		(179)

Settlement loss	1,881		—		922
Total net periodic benefit cost	$	9,740	$	8,261	$	8,616

Schedule of Changes in Projected Benefit Obligations

The changes in projected benefit obligations for fiscal years 2026 and 2025 were as follows (in thousands):


	Years Ended March 31,
	2026		2025
Projected benefit obligations, beginning of the year	$	259,141	$	213,477
Service costs	13,708		11,875
Interest costs	3,564		3,298
Plan participant contributions	7,088		6,676
Actuarial loss	2,216		13,691
Benefits paid	(3,475)		(10,578)
Transfer of prior vested benefits	7,416		15,301
Plan amendments	—		909
Settlement	(18,255)		—
Administrative expense paid	(174)		(157)
Currency exchange rate changes	24,415		4,649
Projected benefit obligations, end of the year	$	295,644	$	259,141

Schedule of Changes in the Fair Value of Defined Benefit Pension Plan Assets

The changes in the fair value of plan assets for fiscal years 2026 and 2025 were as follows (in thousands):


	Years Ended March 31,
	2026		2025
Fair value of plan assets, beginning of the year	$	201,459	$	170,640
Actual return on plan assets	9,386		5,076
Employer contributions	10,544		10,351
Plan participant contributions	7,088		6,676
Benefits paid	(3,475)		(10,578)
Transfer of prior vested benefits	7,416		15,301
Settlement	(18,255)		—
Administrative expenses paid	(174)		(157)
Currency exchange rate changes	19,842		4,150
Fair value of plan assets, end of the year	$	233,831	$	201,459

Schedule of Fair Value of the Defined Benefit Pension Plan Assets by Major Categories and by Levels within the Fair Value Hierarchy

The following tables present the fair value of the defined benefit pension plan assets by major categories and by levels within the fair value hierarchy as of March 31, 2026 and 2025 (in thousands):


	March 31,
	2026				2025
	Level 1		Level 2		Total		Level 1		Level 2		Total
Cash and cash equivalents	$	26,588	$	—	$	26,588	$	21,202	$	—	$	21,202
Equity securities	80,223		—		80,223		60,867		—		60,867
Debt securities	52,819		—		52,819		50,178		—		50,178
Real estate funds	31,979		19,443		51,422		44,906		6,833		51,739
Hedge funds	—		13,556		13,556		—		8,994		8,994

Other	8,721		502		9,223		8,005		474		8,479
Total fair value of plan assets	$	200,330	$	33,501	$	233,831	$	185,158	$	16,301	$	201,459

Schedule of Net Funded Status

The funded status of the plans was as follows (in thousands):


	Years Ended March 31,
	2026		2025
Fair value of plan assets	$	233,831	$	201,459
Less: projected benefit obligations	295,644		259,141
Underfunded status	$	(61,813)	$	(57,682)

Schedule of Amounts Recognized on the Balance Sheet for the Plans

Amounts recognized on the balance sheets for the plans were as follows (in thousands):


	March 31,
	2026		2025
Current liabilities	$	2,036	$	1,728
Non-current liabilities	59,777		55,954
Total liabilities	$	61,813	$	57,682

Schedule of Amounts Recognized in Accumulated Other Comprehensive Loss

Amounts recognized in accumulated other comprehensive income (loss) related to defined benefit pension plans were as follows (in thousands):


	March 31,
	2026		2025
Net prior service credits	$	218	$	820
Net actuarial loss	(22,709)		(22,696)
Accumulated other comprehensive loss	(22,491)		(21,876)
Deferred taxes	747		(3,400)
Accumulated other comprehensive loss, net of tax	$	(21,744)	$	(25,276)

Schedule of Actuarial Assumptions for the Pension Plans

The actuarial assumptions for the defined benefit plans were as follows:


	Years Ended March 31,
	2026	2025
Benefit Obligations:
Discount rate	1.10%- 6.75%	1.20% - 6.50%
Estimated rate of compensation increase	2.00% - 10.00%	2.00% - 10.00%
Cash balance interest credit rate	0.75% - 1.75%	0.75% - 1.75%


	Years Ended March 31,
	2026	2025	2024
Net Periodic Costs:
Discount rate	1.20% - 6.50%	1.50% - 7.00%	1.50% - 7.25%
Estimated rate of compensation increase	2.00% - 10.00%	2.25% - 10.00%	2.25% - 10.00%
Expected average rate of return on plan assets	1.00% - 4.50%	1.00% - 5.25%	0.50% - 4.50%
Cash balance interest credit rate	0.75% - 1.75%	0.50% - 1.75%	0.50% - 1.75%

Schedule of Expected Benefit Payments

The following table reflects the benefit payments that the Company expects the plans to pay in the periods noted (in thousands):


Years Ending March 31,
2027	$	20,309
2028	$	17,109
2029	$	16,841
2030	$	17,194
2031	$	16,247
2032-2036	$	89,012

Other Income (Expense), Net (Tables)

12 Months Ended

Mar. 31, 2026

Other Income and Expenses [Abstract]

Schedule of Other Income (Expense), Net

Other income (expense), net, comprises the following (in thousands):


	Years Ended March 31,
	2026		2025		2024
Investment gain related to the deferred compensation plan	$	3,714	$	2,131	$	4,320
Currency exchange loss, net	(3,733)		(6,401)		(8,770)
Loss on investments, net (1)	(612)		(2,029)		(14,674)
Non-service cost net pension income and other (2)	3,710		3,319		2,748
Other income (expense), net	$	3,079	$	(2,980)	$	(16,376)

(1) Includes unrealized gain (loss) from the change in fair value of investments, income (loss) on equity-method investments, and impairment of investments during the periods presented, as applicable (see Note 9).

(2) Includes the components of net periodic benefit cost of defined benefit plans other than the service cost component (see Note 5).

Income Taxes (Tables)

12 Months Ended

Mar. 31, 2026

Income Tax Disclosure [Abstract]

Schedule of Income Before Income Taxes

Income from continuing operations before income taxes for fiscal years 2026, 2025 and 2024 is summarized as follows (in thousands):


	Years Ended March 31,
	2026		2025		2024
Swiss	$	550,787	$	492,941	$	502,291
Non-Swiss	275,732		213,931		119,305
Income before taxes	$	826,519	$	706,872	$	621,596

Schedule of Provision for Income Taxes

The provision for income taxes is summarized as follows (in thousands):


	Years Ended March 31,
	2026		2025		2024
Current:
Swiss	$	54,644	$	(14,673)	$	26,833
Non-Swiss	30,866		33,473		25,044
Deferred:

Swiss	38,192		45,283		(47,517)
Non-Swiss	(8,370)		11,260		5,093
Provision for income taxes	$	115,332	$	75,343	$	9,453

Schedule of Effective Income Tax Rate Reconciliation

The following table is presented in accordance with ASU 2023-09, which the Company adopted in fiscal year 2026. The Company has adopted this standard prospectively. See Note 2 for additional information. The difference between the provision for income taxes and the expected tax provision at the Swiss statutory income tax rate of 8.5% for the current period is reconciled below (in thousands):


	Year Ended March 31,
	2026		As a percent
Pretax book income at Statutory rate	$	70,250	8.5	%
Domestic federal reconciling items:
Federal Tax Deduction	(4,436)		(0.5)	%
Participation Exemption	(33,617)		(4.1)	%
Domestic state and local income taxes:
Vaud	43,812		5.3	%
Zurich	415		0.1	%
Domestic other, net	4,213		0.5	%
Foreign reconciling items:
U.S.:
Statutory tax rate difference between United States and Switzerland	13,948		1.7	%
Foreign derived intangible income	(4,192)		(0.5)	%
State tax expense, net of federal benefit	4,189		0.5	%
Tax credits	(6,022)		(0.7)	%
Non-deductible executive compensation	4,314		0.5	%
Other, net	346		—	%
China:
Statutory tax rate difference between China and Switzerland	8,931		1.1	%
Other, net	118		—	%
Hong Kong - Tax exempt dividends	(7,402)		(0.9)	%
Other foreign jurisdictions	45,138		5.5	%
Changes in unrecognized tax benefits	(24,673)		(3.0)	%
Effective Tax Rate	$	115,332	14.0	%

The difference between the provision for income taxes and the expected tax provision at the Swiss statutory income tax rate of 8.5% is reconciled for prior periods as previously disclosed prior to the adoption of ASU 2023-09 (in thousands):


	Years Ended March 31,
		2025		2024
Expected tax provision at statutory income tax rates		$	60,084	$	52,836
Income taxes at different rates		68,212		47,595
Research and development tax credits		(6,797)		(9,738)
Swiss Tax Benefits		—		(50,051)
Executive compensation		980		407
Stock-based compensation		(2,162)		4,019
Deferred tax effects from TRAF		—		(33,926)
Valuation allowance		1,000		4,780

Restructuring credits		(817)		—
Unrecognized tax benefits/ Audit resolution and statute lapse		(43,333)		11,535

FDII deduction		(1,424)		(18,675)
Other, net		(400)		671
Provision for income taxes		$	75,343	$	9,453

Schedule of Deferred Income Tax Assets and Liabilities

Deferred income tax assets and liabilities consist of the following (in thousands):


	March 31,
	2026		2025
Deferred tax assets:
Tax attributes carryforward	$	42,408	$	43,536
Future tax deduction from Swiss Tax Benefits	50,630		48,267
Accruals	67,963		72,114
Tax step-up of goodwill from TRAF	73,512		86,519
Share-based compensation	20,228		15,411
Gross deferred tax assets	254,741		265,847
Valuation allowance	(36,922)		(36,537)
Deferred tax assets after valuation allowance	$	217,819	$	229,310
Deferred tax liabilities:
Acquired intangible assets and other	$	(23,975)	$	(27,788)
Deferred tax liabilities	(23,975)		(27,788)
Deferred tax assets, net	$	193,844	$	201,522

Schedule of Income Taxes Paid, Net of Refunds Received

The following table presents income taxes, including withholding taxes, paid, net of refunds received, disaggregated by federal, state, and foreign jurisdictions (in thousands):


	Year Ended March 31,
	2026
Switzerland - Federal	$	19,028
Switzerland - Cantonal:
Vaud	$	21,851
Zurich	116
Total Cantonal	$	21,967
Foreign:
United States	$	6,502
China	9,466
Japan	5,283
Brazil	5,059
Sweden	4,551
Other	14,497
Total Foreign	$	45,358
Total	$	86,353

Schedule of Aggregate Changes in Gross Unrecognized Tax Benefits

The aggregate changes in gross unrecognized tax benefits in fiscal years 2026, 2025 and 2024 were as follows (in thousands):


March 31, 2023	$	191,000
Lapse of statute of limitations	(3,863)
Settlements with taxing authorities	41
Increases in balances related to tax positions taken during prior years	705
Increases in balances related to tax positions taken during the year	22,332
March 31, 2024	$	210,215
Lapse of statute of limitations	(25,075)
Settlements with taxing authorities	(32,314)
Increases (decreases) in balances related to tax positions taken during prior years	(3,055)
Increases in balances related to tax positions taken during the year	2,213
March 31, 2025	$	151,984
Lapse of statute of limitations	(23,176)

Increases (decreases) in balances related to tax positions taken during prior years	(1,120)
Increases in balances related to tax positions taken during the year	3,673
March 31, 2026	$	131,361

Balance Sheet Components (Tables)

12 Months Ended

Mar. 31, 2026

Balance Sheet Related Disclosures [Abstract]

Schedule of Components of Balance Sheet Asset

The following table presents the components of certain balance sheet asset amounts as of March 31, 2026 and 2025 (in thousands):


	March 31,
	2026		2025
Accounts receivable, net:
Accounts receivable	$	792,466	$	708,693

Allowance for cooperative marketing arrangements	(49,964)		(44,457)
Allowance for customer incentive programs	(73,999)		(66,564)
Allowance for pricing programs	(144,800)		(105,876)
Other allowances	(17,836)		(37,250)
	$	505,867	$	454,546
Inventories:
Raw materials	$	62,484	$	48,699
Finished goods	427,464		455,048
	$	489,948	$	503,747
Other current assets:
Value-added tax ("VAT") receivables	$	58,600	$	46,332
Prepaid expenses and other assets	119,295		84,879
	$	177,895	$	131,211
Property, plant and equipment, net:
Plant, buildings and improvements	$	93,023	$	88,041
Equipment and tooling	350,869		324,007
Computer equipment	28,108		26,881
Software	103,961		95,829
	575,961		534,758
Less: accumulated depreciation and amortization	(470,964)		(429,889)
	104,997		104,869
Construction-in-process	8,750		6,337
Land	2,707		2,652
	$	116,454	$	113,858
Other assets:
Deferred tax assets	$	192,083	$	202,180
Right-of-use assets	71,531		75,239
Investments for deferred compensation plan	30,495		29,006
Investments in privately held companies	28,871		27,980
Other assets	16,095		9,672
	$	339,075	$	344,077

Schedule of Components of Balance Sheet Liability

The following table presents the components of certain balance sheet liability amounts as of March 31, 2026 and 2025 (in thousands):


	March 31,
	2026		2025
Accrued and other current liabilities:
Accrued customer marketing, pricing and incentive programs	$	211,915	$	173,401
Accrued personnel expenses	165,404		180,763
Deferred revenue (1)	38,652		25,798
Income taxes payable	37,843		26,841
VAT payable	36,292		29,648
Warranty liabilities	35,488		34,428
Accrued sales return liability	27,635		27,913
Accrued loss for inventory purchase commitments	18,167		19,614
Operating lease liabilities	17,044		15,780
Other current liabilities	193,550		152,317
	$	781,990	$	686,503
Other non-current liabilities:
Operating lease liabilities	$	71,111	$	76,622
Employee benefit plan obligations	61,066		57,338
Deferred revenue (1)	53,624		38,216
Obligation for deferred compensation plan	30,495		29,006
Warranty liabilities	14,754		14,756

Other non-current liabilities	6,849		5,574
	$	237,899	$	221,512

(1) Includes deferred revenue for post-contract customer support and other services.

Fair Value Measurements (Tables)

12 Months Ended

Mar. 31, 2026

Fair Value Disclosures [Abstract]

Schedule of Financial Assets and Liabilities, Classified by Level

The following table presents the Company's financial assets and liabilities that were accounted for at fair value on a recurring basis, excluding assets related to the Company's defined benefit pension plans, classified by the level within the fair value hierarchy (in thousands):


	March 31, 2026						March 31, 2025
	Level 1		Level 2		Level 3		Level 1		Level 2		Level 3
Assets:
Cash equivalents	$	863,120	$	—	$	—	$	852,467	$	—	$	—
Investments for deferred compensation plan included in other assets:
Cash	$	60	$	—	$	—	$	90	$	—	$	—
Common stock	902		—		—		540		—		—
Money market funds	4,553		—		—		7,359		—		—
Mutual funds	24,980		—		—		21,017		—		—
Total investments for deferred compensation plan	$	30,495	$	—	$	—	$	29,006	$	—	$	—

Currency derivative assets	$	—	$	5,486	$	—	$	—	$	90	$	—

Liabilities:


Currency derivative liabilities	$	—	$	94	$	—	$	—	$	2,849	$	—

Derivative Financial Instruments (Tables)

12 Months Ended

Mar. 31, 2026

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Gains on Derivative Instruments

The following table presents the amounts of gain (loss) on the Company's derivative instruments designated as hedging instruments for fiscal years 2026, 2025 and 2024 and their locations on its consolidated statements of operations and consolidated statements of comprehensive income (in thousands):


	Amount of Gain (Loss) Deferred as a Component of Accumulated Other Comprehensive Loss						Amount of Loss (Gain) Reclassified from Accumulated Other Comprehensive Loss to Cost of Goods Sold
	2026		2025		2024		2026		2025		2024

Cash flow hedges	$	(8,214)	$	(703)	$	1,109	$	13,321	$	(3,461)	$	3,964

Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Mar. 31, 2026

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Activity in Goodwill Balance

The following table summarizes the activities in the Company's goodwill balance (in thousands):


	Years Ended March 31,
	2026		2025
Beginning of the period	$	463,230	$	461,978

Effects of foreign currency translation	2,187		1,252
End of the period	$	465,417	$	463,230

Schedule of Intangible Assets Subject to Amortization

The Company's acquired intangible assets were as follows (in thousands):


	March 31,
	2026						2025
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Trademarks and trade names	$	32,390	$	(30,569)	$	1,821	$	32,390	$	(28,675)	$	3,715
Developed technology	107,550		(103,307)		4,243		107,421		(96,464)		10,957
Customer contracts/relationships	69,087		(63,021)		6,066		69,087		(58,646)		10,441

Effects of foreign currency translation	1,218		(962)		256		(620)		137		(483)
Total	$	210,245	$	(197,859)	$	12,386	$	208,278	$	(183,648)	$	24,630

- Definition

Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 24
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482548/350-20-55-24

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482573/350-20-50-1

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (h)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482573/350-20-50-1

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482573/350-20-50-1

Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482573/350-20-50-1

Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482573/350-20-50-1

Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482573/350-20-50-1

Reference 8: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482573/350-20-50-1

Reference 9: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482573/350-20-50-1

Reference 10: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (g)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482573/350-20-50-1

Reference 11: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482573/350-20-50-1A

Reference 12: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482573/350-20-50-2

+ Details

Commitments and Contingencies (Tables)

12 Months Ended

Mar. 31, 2026

Commitments and Contingencies Disclosure [Abstract]

Schedule of Changes in Warranty Liabilities

Changes in the Company's warranty liabilities for fiscal years 2026 and 2025 were as follows (in thousands):


	Years Ended March 31,
	2026		2025
Beginning of the period	$	49,184	$	44,654
Provision	37,617		44,876
Settlements	(37,411)		(40,316)
Effects of foreign currency translation	852		(30)
End of the period	$	50,242	$	49,184

Shareholders' Equity (Tables)

12 Months Ended

Mar. 31, 2026

Stockholders' Equity Note [Abstract]

Schedule of Accelerated Share Repurchases

The following table summarizes the Company's share repurchase activities for fiscal years 2026, 2025 and 2024 (in thousands):


	Years Ended March 31,
	2026		2025		2024
2023 Share Repurchase Program:
Number of shares repurchased (1)	6,167		6,679		4,459
Aggregate cost of shares repurchased (1) (2)	$	557,043	$	588,028	$	364,639

2020 Share Repurchase Program:
Number of shares repurchased (3)	—		—		2,641
Aggregate cost of shares repurchased	$	—	$	—	$	159,112

(1) In fiscal years 2026 and 2025, all shares were repurchased for cancellation. In fiscal year 2024, 4.1 million shares in an aggregate cost of $332.1 million were repurchased for cancellation and the remaining shares were repurchased to support equity incentive plans.

(2) Includes an aggregate cost of $40.8 million, $18.7 million, and $19.5 million, respectively, that was not yet paid as of March 31, 2026, 2025 and 2024.

(3) Shares were repurchased to support equity incentive plans.

Schedule of Components of Accumulated Other Comprehensive Loss

The components of accumulated other comprehensive loss were as follows (in thousands):



	Currency Translation Adjustment		Defined Benefit Plans		Deferred Hedging Gains (Losses)		Total
March 31, 2025	$	(118,652)	$	(25,276)	$	(3,024)	$	(146,952)
Other comprehensive income (loss)	24,496		3,532		5,107		33,135
March 31, 2026	$	(94,156)	$	(21,744)	$	2,083	$	(113,817)

Segment Information (Tables)

12 Months Ended

Mar. 31, 2026

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment

The following table presents segment revenue, gross profit, and net income for the periods presented:


	Years Ended March 31,
	2026		2025		2024
Net sales	$	4,840,761	$	4,554,900	$	4,298,467
Less: Significant segment expenses
Cost of goods sold (1)	2,731,776		2,572,724		2,501,414
Marketing and selling (1)	774,098		774,036		694,530
Research and development (1)	293,317		288,828		269,407
General and administrative (1)	130,809		144,680		133,787
Less: other segment items
Share-based compensation expense	112,392		89,913		82,889
Amortization of intangible assets and acquisition-related costs	13,315		20,249		21,962
Interest income	(48,246)		(54,997)		(50,636)
Other (2)	6,781		12,595		23,518
Provision for income taxes	115,332		75,343		9,453
Net income	$	711,187	$	631,529	$	612,143

(1) The difference between the amounts included in the table above and the amounts included in the consolidated

statements of operations is related to share-based compensation expense (see Note 4).

(2) Includes restructuring charges, net, impairment of intangible assets, change in fair value of contingent

consideration for business acquisition, and other income (expense), net, as applicable.

Schedule of Net Sales by Product Categories, Excluding Intercompany Transactions

Sales by product category for fiscal years 2026, 2025 and 2024 were as follows (in thousands):


	Years Ended March 31,
	2026		2025		2024
Gaming (1)	$	1,414,206	$	1,338,467	$	1,231,063
Keyboards & Combos	937,551		882,643		821,441
Pointing Devices	858,904		788,784		742,987
Video Collaboration	689,040		626,000		609,361
Webcams	326,172		315,520		325,225
Tablet Accessories	336,189		299,540		254,060
Headsets	179,825		179,710		168,478
Other (2)	98,874		124,236		145,852
Total Sales	$	4,840,761	$	4,554,900	$	4,298,467

(1) Gaming includes streaming services revenue generated by Streamlabs.

(2) Other primarily consists of mobile speakers and PC speakers.

Schedule of Net Sales by Geographic Region

Sales by geographic region (based on the customers' locations) for fiscal years 2026, 2025 and 2024 were as follows (in thousands):


	Years Ended March 31,
	2026		2025		2024
Americas	$	1,955,191	$	1,973,374	$	1,896,258
EMEA	1,539,065		1,413,855		1,301,515
Asia Pacific	1,346,505		1,167,671		1,100,694
Total Sales	$	4,840,761	$	4,554,900	$	4,298,467

Schedule of Long-Lived Assets by Geographic Region

Property, plant and equipment, net (excluding software) and right-of-use assets by geographic region were as follows (in thousands):


	March 31,
	2026		2025
Americas	$	59,103	$	61,521
EMEA	48,119		47,874
Asia Pacific	65,089		60,710
Total	$	172,311	$	170,105

Restructuring (Tables)

12 Months Ended

Mar. 31, 2026

Restructuring and Related Activities [Abstract]

Schedule of Restructuring Related Activities

The following table summarizes restructuring-related activities during fiscal years 2026, 2025 and 2024 (in thousands):



	Termination Benefits		Contract Termination and Other		Total






Accrued restructuring liability at March 31, 2023 (1)	$	14,177	$	5,357	$	19,534
Charges, net	6,011		(2,145)		3,866
Cash payments	(18,375)		(1,757)		(20,132)
Accrued restructuring liability at March 31, 2024 (1)	$	1,813	$	1,455	$	3,268
Charges, net	9,846		(231)		9,615
Cash payments	(2,562)		(241)		(2,803)
Accrued restructuring liability at March 31, 2025 (1)	$	9,097	$	983	$	10,080
Charges, net	7,584		2,276		9,860
Cash payments	(13,558)		(2,299)		(15,857)
Accrued restructuring liability at March 31, 2026 (1)	$	3,123	$	960	$	4,083

(1) The accrual balances are included in accrued and other current liabilities on the Company’s consolidated balance sheets.

Leases (Tables)

12 Months Ended

Mar. 31, 2026

Leases [Abstract]

Schedule of Supplemental Information Related to Operating Leases

Supplemental cash flow information related to operating leases (in thousands):


	Years Ended March 31,
	2026		2025		2024
Cash paid for amounts included in the measurement of operating lease liabilities	$	18,056	$	16,847	$	13,489
ROU assets obtained in exchange for operating lease liabilities	$	6,902	$	26,767	$	8,593

Weighted-average lease terms and discount rates were as follows:


	Years Ended March 31,
	2026		2025
Weighted-average remaining lease terms (in years)	6.9		7.6
Weighted-average discount rate	3.6	%	3.6	%

Schedule of Maturity of Lease Liabilities Under Non-Cancelable Operating Leases

Future lease payments included in the measurement of operating lease liabilities as of March 31, 2026 for the following five fiscal years and thereafter are as follows (in thousands):


Years Ending March 31,
2027	$	18,222
2028	14,786
2029	14,242
2030	12,261
2031	10,496
Thereafter	29,549
Total lease payments	$	99,556
Less: imputed interest	(11,401)
Present value of lease liabilities	$	88,155

Summary of Significant Accounting Policies - Narrative (Details) $ in Millions	12 Months Ended
	Mar. 31, 2026 USD ($) reporting_unit performanceObligation	Mar. 31, 2025 USD ($)	Mar. 31, 2024 USD ($)
Revenue Recognition
Sales contract with customer term (in years)	1 year
Number of performance obligations \| performanceObligation	2
Service period of deferred revenue	5 years
Advertising Costs
Advertising costs	$ 410.9	$ 355.1	$ 325.3
Leases
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Other assets	Other assets
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Accrued and other current liabilities	Accrued and other current liabilities
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Other Liabilities, Noncurrent	Other Liabilities, Noncurrent
Impairment of Goodwill
Number of reporting units \| reporting_unit	1
Plant and buildings
Property, Plant and Equipment
Estimated useful life (in years)	25 years
Internal-use software
Property, Plant and Equipment
Estimated useful life (in years)	3 years
Operating expense
Advertising Costs
Advertising costs	$ 54.1	$ 53.1	$ 46.6
Minimum
Revenue Recognition
Required customer payment period (in days)	30 days
Intangible Assets
Estimated useful life (in years)	1 year
Product Warranties
Product warranty period (in years)	1 year
Minimum \| Equipment
Property, Plant and Equipment
Estimated useful life (in years)	3 years
Minimum \| Tooling
Property, Plant and Equipment
Estimated useful life (in years)	6 months
Maximum
Revenue Recognition
Required customer payment period (in days)	60 days
Intangible Assets
Estimated useful life (in years)	10 years
Product Warranties
Product warranty period (in years)	3 years
Maximum \| Equipment
Property, Plant and Equipment
Estimated useful life (in years)	5 years
Maximum \| Tooling
Property, Plant and Equipment
Estimated useful life (in years)	1 year

Summary of Significant Accounting Policies - Schedule of Concentration of Risk (Details) - Customer concentration risk	12 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2024
Customer A \| Gross sales
Concentration Risk [Line Items]
Concentration credit risk by major customer (as a percent)	14.00%	14.00%	13.00%
Customer A \| Accounts receivable
Concentration Risk [Line Items]
Concentration credit risk by major customer (as a percent)	16.00%	14.00%
Customer B \| Gross sales
Concentration Risk [Line Items]
Concentration credit risk by major customer (as a percent)	18.00%	19.00%	18.00%
Customer B \| Accounts receivable
Concentration Risk [Line Items]
Concentration credit risk by major customer (as a percent)	23.00%	21.00%
Customer C \| Gross sales
Concentration Risk [Line Items]
Concentration credit risk by major customer (as a percent)	12.00%	12.00%	14.00%
Customer C \| Accounts receivable
Concentration Risk [Line Items]
Concentration credit risk by major customer (as a percent)	13.00%	10.00%

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 275
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482861/275-10-50-18

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 275
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482861/275-10-50-18

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 275
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 20
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482861/275-10-50-20

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 275
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482861/275-10-50-18

Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 275
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482861/275-10-50-18

Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 275
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482861/275-10-50-18

Reference 7: http://www.xbrl.org/2003/role/exampleRef
-Topic 275
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 18
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482836/275-10-55-18

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 275
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 20
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482861/275-10-50-20

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 954
-SubTopic 310
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478785/954-310-50-2

+ Details

- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References + Details

Net Income Per Share - Schedule of Computations of Basic and Diluted Net Income Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2024
Net income
Net income	$ 711,187	$ 631,529	$ 612,143
Net income	$ 711,187	$ 631,529	$ 612,143
Shares used in net income per share computation:
Weighted average shares outstanding - basic (in shares)	146,775	151,322	156,776
Effect of potentially dilutive equivalent shares (in shares)	1,433	1,462	1,395
Weighted average shares outstanding - diluted (in shares)	148,208	152,784	158,171
Net income per share:
Basic (in dollars per share)	$ 4.85	$ 4.17	$ 3.90
Diluted (in dollars per share)	$ 4.80	$ 4.13	$ 3.87

Net Income Per Share - Narrative (Details) - shares shares in Millions	12 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2024
Earnings Per Share [Abstract]
Anti-dilutive equivalents shares excluded (in shares)	0.5	0.7	1.1

Employee Stock-Based Compensation - Narrative (Details) shares in Millions, $ in Millions		12 Months Ended
	Jun. 29, 2022 shares	Mar. 31, 2026 USD ($) installment shares	Mar. 31, 2025 USD ($)	Mar. 31, 2024 USD ($)
Employee Benefit Plan
Share-based compensation expenses capitalized as inventory \| $		$ 8.4	$ 7.6	$ 6.3
Future stock-based compensation cost \| $		$ 151.6
Recognized weighted cost (in years)		2 years 3 months 18 days
Granted—PSUs
Employee Benefit Plan
RSUs outstanding (in shares)		0.7
Percent of granted and vested of target number (as a percent)		100.00%
1996 ESPP and 2006 ESPP
Employee Benefit Plan
Purchase price of shares expressed as percentage of the fair market value (as a percent)		85.00%
Offering period of ESPP Plan (in months)		6 months
Number of shares reserved for issuance (in shares)		29.0
Number of shares available for issuance (in shares)		2.4
2006 Plan
Employee Benefit Plan
Number of shares reserved for issuance (in shares)		33.8
Number of shares available for issuance (in shares)		6.7
Additional issuance shares (in shares)	3.3
2006 Plan \| Stock options
Employee Benefit Plan
Expiration period (in years)		10 years
2006 Plan \| Service-based RSU \| Maximum
Employee Benefit Plan
Vesting installment \| installment		4
2006 Plan \| Granted—PSUs
Employee Benefit Plan
Performance period (in years)		3 years

Employee Stock-Based Compensation - Schedule of Share-Based Compensation Expense and Related Tax Benefit Recognized (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2024
Share-based compensation expense and related tax benefit
Total share-based compensation expense	$ 112,392	$ 89,913	$ 82,889
Income tax benefit	(20,721)	(20,148)	(15,305)
Total share-based compensation expense, net of income tax benefit	91,671	69,765	67,584
Cost of goods sold
Share-based compensation expense and related tax benefit
Total share-based compensation expense	10,631	10,021	8,004
Marketing and selling
Share-based compensation expense and related tax benefit
Total share-based compensation expense	42,506	40,378	35,780
Research and development
Share-based compensation expense and related tax benefit
Total share-based compensation expense	22,904	20,180	17,836
General and administrative
Share-based compensation expense and related tax benefit
Total share-based compensation expense	$ 36,351	$ 19,334	$ 21,269

Employee Stock-Based Compensation - Schedule of Assumptions Applied for the Fair Value of Market-Based RSUs Using the Monte-Carlo Simulation Method (Details) - $ / shares	12 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2024
Employee Stock Purchase Plans
Employee Benefit Plan
Expected dividend rate	1.79%	1.35%	1.61%
Risk-free interest rate	3.90%	4.71%	5.36%
Expected volatility	38.00%	29.00%	33.00%
Expected term (years)	6 months	6 months	6 months
Weighted average grant date fair value per share (in dollars per share)	$ 23.10	$ 21.74	$ 19.02
PSUs
Employee Benefit Plan
Expected dividend rate	1.63%	1.41%	1.90%
Risk-free interest rate	3.90%	4.55%	3.83%
Expected volatility	37.00%	38.00%	41.00%
Expected term (years)	3 years	3 years	3 years
Weighted average grant date fair value per share (in dollars per share)	$ 90	$ 91	$ 67

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (f)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(v)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
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-Section 50
-Paragraph 2
-Subparagraph (f)(2)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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-Section 50
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-Subparagraph (f)(2)(iii)
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Reference 5: http://www.xbrl.org/2003/role/disclosureRef
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-Section 50
-Paragraph 2
-Subparagraph (f)(2)(iv)
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Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
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Reference 7: http://www.xbrl.org/2003/role/disclosureRef
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Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
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Reference 9: http://www.xbrl.org/2003/role/disclosureRef
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Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
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-Name Accounting Standards Codification
-Section 35
-Paragraph 1D
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480483/718-10-35-1D

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
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Reference 12: http://www.xbrl.org/2003/role/disclosureRef
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Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
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-Name Accounting Standards Codification
-Section 50
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-Subparagraph (a)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
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Reference 15: http://www.xbrl.org/2003/role/disclosureRef
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Reference 16: http://www.xbrl.org/2003/role/disclosureRef
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Reference 17: http://www.xbrl.org/2003/role/disclosureRef
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Reference 18: http://www.xbrl.org/2003/role/disclosureRef
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Reference 19: http://www.xbrl.org/2003/role/disclosureRef
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Reference 25: http://www.xbrl.org/2003/role/disclosureRef
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Reference 26: http://www.xbrl.org/2003/role/disclosureRef
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Reference 28: http://www.xbrl.org/2003/role/disclosureRef
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Reference 29: http://www.xbrl.org/2003/role/disclosureRef
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Reference 30: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

Employee Stock-Based Compensation - Schedule of Stock Option Activity (Details) - Stock options - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2024
Number of Shares
Options outstanding, beginning of period (in shares)	587	763	1,120
Exercised (in shares)	(129)	(111)	(181)
Forfeited (in shares)		(65)	(176)
Options outstanding, end of period (in shares)	458	587	763
Vested and exercisable (in shares)	458
Weighted-Average Exercise Price
Beginning of period (in dollars per share)	$ 64
Exercised (in dollars per share)	67
End of period (in dollars per share)	64	$ 64
Vested and exercisable (in dollars per share)	$ 64
Weighted-Average Remaining Contractual Term
Outstanding, Weighted-Average Remaining Contractual Term (in years)	4 years 8 months 12 days	5 years 3 months 18 days
Vested and exercisable, Weighted-Average Remaining Contractual Term (in years)	4 years 8 months 12 days
Aggregate Intrinsic Value
Forfeited	$ 4,371	$ 1,483	$ 6,160
Outstanding, March 31, 2026	12,500	$ 11,768
Vested and exercisable, March 31, 2026	$ 12,500

Employee Stock-Based Compensation - Schedule of Time, Market and Performance-Based RSU Activity (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2024
RSU
Number of Shares
Outstanding, beginning of period (in shares)	3,056	3,478	3,456
Vested (in shares)	(895)	(1,172)	(1,200)
Forfeited (in shares)	(512)	(462)	(631)
Outstanding, end of period (in shares)	2,941	3,056	3,478
Weighted-Average Grant Date Fair Value
Outstanding, beginning of period (in dollars per share)	$ 73	$ 65	$ 66
Vested (in dollars per share)	72
Forfeited (in dollars per share)	72
Outstanding, end of period (in dollars per share)	$ 79	$ 73	$ 65
Aggregate Fair Value
Vested	$ 78,466	$ 113,553	$ 92,340
Granted—RSUs
Number of Shares
Granted (in shares)	1,017	931	1,396
Weighted-Average Grant Date Fair Value
Granted (in dollars per share)	$ 84	$ 93	$ 59
Granted—PSUs
Number of Shares
Granted (in shares)	275	281	457
Outstanding, end of period (in shares)	700
Weighted-Average Grant Date Fair Value
Granted (in dollars per share)	$ 90	$ 91	$ 67

Employee Benefit Plans - Schedule of Net Periodic Benefit Costs (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2024
Compensation Related Costs [Abstract]
Service costs	$ 13,708	$ 11,875	$ 11,479
Interest costs	$ 3,564	$ 3,298	$ 3,844
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Interest Cost, Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment, after Tax	Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment, after Tax	Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment, after Tax
Expected return on plan assets	$ (9,674)	$ (7,671)	$ (6,950)
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Expected Return (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment, after Tax	Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment, after Tax	Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment, after Tax
Amortization:
Net prior service cost (credit) recognized	$ (658)	$ 309	$ (500)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Amortization of Prior Service Cost (Credit), Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax	Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax	Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax
Net actuarial loss (gain) recognized	$ 919	$ 450	$ (179)
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Immediate Recognition of Actuarial Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax	Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax	Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax
Settlement loss	$ 1,881	$ 0	$ 922
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Settlement Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax	Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax	Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax
Total net periodic benefit cost	$ 9,740	$ 8,261	$ 8,616

Employee Benefit Plans - Schedule of Changes in Projected Benefit Obligations (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2024
Changes in projected benefit obligations
Projected benefit obligations, beginning of the year	$ 259,141	$ 213,477
Service costs	13,708	11,875	$ 11,479
Interest costs	3,564	3,298	3,844
Plan participant contributions	7,088	6,676
Actuarial loss	2,216	13,691
Benefits paid	(3,475)	(10,578)
Transfer of prior vested benefits	7,416	15,301
Plan amendments	0	909
Settlement	(18,255)	0
Administrative expense paid	(174)	(157)
Currency exchange rate changes	24,415	4,649
Projected benefit obligations, end of the year	$ 295,644	$ 259,141	$ 213,477

Employee Benefit Plans - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2024
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation	$ 262,600	$ 227,700
Company's expected contribution to defined benefit pension plans in next fiscal year	8,400
Expense for defined contribution plans	15,700	13,700	$ 14,400
Fair value of marketable securities	30,500	29,000
Obligation for deferred compensation plan	$ 30,495	$ 29,006
Deferred Compensation Plan
Defined Benefit Plan Disclosure [Line Items]
Percentage of vested salary and incentive compensation deferrals permitted to eligible employees (as a percent)	100.00%
Equity securities
Defined Benefit Plan Disclosure [Line Items]
Target plan asset allocations (as a percent)	33.00%
Debt securities
Defined Benefit Plan Disclosure [Line Items]
Target plan asset allocations (as a percent)	28.00%
Real estate funds
Defined Benefit Plan Disclosure [Line Items]
Target plan asset allocations (as a percent)	28.00%
Cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Target plan asset allocations (as a percent)	4.00%

Employee Benefit Plans - Schedule of Changes in the Fair Value of Defined Benefit Pension Plan Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets, beginning of year	$ 201,459	$ 170,640
Actual return on plan assets	9,386	5,076
Employer contributions	10,544	10,351
Plan participant contributions	7,088	6,676
Benefits paid	(3,475)	(10,578)
Transfer of prior vested benefits	7,416	15,301
Settlement	(18,255)	0
Administrative expense paid	(174)	(157)
Currency exchange rate changes	19,842	4,150
Fair value of plan assets, end of year	$ 233,831	$ 201,459

Employee Benefit Plans - Schedule of Fair Value of the Defined Benefit Pension Plan Assets by Major Categories and by Levels within the Fair Value Hierarchy (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2024
Defined Benefit Plan Disclosure [Line Items]
Total fair value of plan assets	$ 233,831	$ 201,459	$ 170,640
Level 1
Defined Benefit Plan Disclosure [Line Items]
Total fair value of plan assets	200,330	185,158
Level 2
Defined Benefit Plan Disclosure [Line Items]
Total fair value of plan assets	33,501	16,301
Cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Total fair value of plan assets	26,588	21,202
Cash and cash equivalents \| Level 1
Defined Benefit Plan Disclosure [Line Items]
Total fair value of plan assets	26,588	21,202
Cash and cash equivalents \| Level 2
Defined Benefit Plan Disclosure [Line Items]
Total fair value of plan assets	0	0
Equity securities
Defined Benefit Plan Disclosure [Line Items]
Total fair value of plan assets	80,223	60,867
Equity securities \| Level 1
Defined Benefit Plan Disclosure [Line Items]
Total fair value of plan assets	80,223	60,867
Equity securities \| Level 2
Defined Benefit Plan Disclosure [Line Items]
Total fair value of plan assets	0	0
Debt securities
Defined Benefit Plan Disclosure [Line Items]
Total fair value of plan assets	52,819	50,178
Debt securities \| Level 1
Defined Benefit Plan Disclosure [Line Items]
Total fair value of plan assets	52,819	50,178
Debt securities \| Level 2
Defined Benefit Plan Disclosure [Line Items]
Total fair value of plan assets	0	0
Real estate funds
Defined Benefit Plan Disclosure [Line Items]
Total fair value of plan assets	51,422	51,739
Real estate funds \| Level 1
Defined Benefit Plan Disclosure [Line Items]
Total fair value of plan assets	31,979	44,906
Real estate funds \| Level 2
Defined Benefit Plan Disclosure [Line Items]
Total fair value of plan assets	19,443	6,833
Hedge funds
Defined Benefit Plan Disclosure [Line Items]
Total fair value of plan assets	13,556	8,994
Hedge funds \| Level 1
Defined Benefit Plan Disclosure [Line Items]
Total fair value of plan assets	0	0
Hedge funds \| Level 2
Defined Benefit Plan Disclosure [Line Items]
Total fair value of plan assets	13,556	8,994
Other
Defined Benefit Plan Disclosure [Line Items]
Total fair value of plan assets	9,223	8,479
Other \| Level 1
Defined Benefit Plan Disclosure [Line Items]
Total fair value of plan assets	8,721	8,005
Other \| Level 2
Defined Benefit Plan Disclosure [Line Items]
Total fair value of plan assets	$ 502	$ 474

Employee Benefit Plans - Schedule of Net Funded Status (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2024
Compensation Related Costs [Abstract]
Fair value of plan assets	$ 233,831	$ 201,459	$ 170,640
Less: projected benefit obligations	295,644	259,141	$ 213,477
Underfunded status	$ (61,813)	$ (57,682)

- Definition

Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee.

+ References

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+ Details

Employee Benefit Plans - Schedule of Amounts Recognized on the Balance Sheet for the Plans (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Mar. 31, 2025
Compensation Related Costs [Abstract]
Current liabilities	$ 2,036	$ 1,728
Non-current liabilities	59,777	55,954
Total liabilities	$ 61,813	$ 57,682

Employee Benefit Plans - Schedule of Amounts Recognized in Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Mar. 31, 2025
Compensation Related Costs [Abstract]
Net prior service credits	$ 218	$ 820
Net actuarial loss	(22,709)	(22,696)
Accumulated other comprehensive loss	(22,491)	(21,876)
Deferred taxes	747	(3,400)
Accumulated other comprehensive loss, net of tax	$ (21,744)	$ (25,276)

Employee Benefit Plans - Schedule of Actuarial Assumptions for the Pension Plans (Details)	12 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2024
Minimum
Benefit Obligations:
Discount rate (as a percent)	1.10%	1.20%
Estimated rate of compensation increase (as a percent)	2.00%	2.00%
Cash balance interest credit rate (as a percent)	0.75%	0.75%
Net Periodic Costs:
Discount rate (as a percent)	1.20%	1.50%	1.50%
Estimated rate of compensation increase (as a percent)	2.00%	2.25%	2.25%
Expected average rate of return on plan assets (as a percent)	1.00%	1.00%	0.50%
Cash balance interest credit rate (as a percent)	0.75%	0.50%	0.50%
Maximum
Benefit Obligations:
Discount rate (as a percent)	6.75%	6.50%
Estimated rate of compensation increase (as a percent)	10.00%	10.00%
Cash balance interest credit rate (as a percent)	1.75%	1.75%
Net Periodic Costs:
Discount rate (as a percent)	6.50%	7.00%	7.25%
Estimated rate of compensation increase (as a percent)	10.00%	10.00%	10.00%
Expected average rate of return on plan assets (as a percent)	4.50%	5.25%	4.50%
Cash balance interest credit rate (as a percent)	1.75%	1.75%	1.75%

Employee Benefit Plans - Schedule of Expected Benefit Payments (Details) $ in Thousands	Mar. 31, 2026 USD ($)
Compensation Related Costs [Abstract]
2027	$ 20,309
2028	17,109
2029	16,841
2030	17,194
2031	16,247
2032-2036	$ 89,012

Other Income (Expense), Net (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2024
Other income (expense), net
Investment gain related to the deferred compensation plan	$ 3,714	$ 2,131	$ 4,320
Currency exchange loss, net	(3,733)	(6,401)	(8,770)
Loss on investments, net	(612)	(2,029)	(14,674)
Non-service cost net pension income and other	3,710	3,319	2,748
Other income (expense), net	$ 3,079	$ (2,980)	$ (16,376)

Income Taxes - Schedule of Income Before Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2024
Income Tax Disclosure [Abstract]
Swiss	$ 550,787	$ 492,941	$ 502,291
Non-Swiss	275,732	213,931	119,305
Income before income taxes	$ 826,519	$ 706,872	$ 621,596

- Definition

Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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+ Details

Income Taxes - Schedule of Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2024
Current:
Swiss	$ 54,644	$ (14,673)	$ 26,833
Non-Swiss	30,866	33,473	25,044
Deferred:
Swiss	38,192	45,283	(47,517)
Non-Swiss	(8,370)	11,260	5,093
Provision for income taxes	$ 115,332	$ 75,343	$ 9,453

- Definition

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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+ Details

Income Taxes - Narrative (Details) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
Income Taxes - Narrative (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2023
Net operating loss and tax credit carryforwards
Statutory income tax rate (as a percent)		8.50%
Decrease in uncertain tax positions		$ 23,176	$ 25,075	$ 3,863
Increase in unrecognized tax benefits		$ (20,600)
Amortization period	10 years			10 years
Expense (benefit) related to reversal of uncertain tax positions				$ 25,100
Effective income tax rates (as a percent)		14.00%
Hong Kong - Tax exempt dividends				5,100
Recognition of excess tax benefits				18,700
Valuation allowance		$ 36,922	36,537
Income taxes paid, net		86,353	67,484	50,855
Unrecognized tax benefits that would impact effective tax rate		131,400	152,000
Unrecognized tax benefits, uncertain tax positions		131,361	151,984	$ 210,215	$ 191,000
Interest and penalties in income tax expense		3,100	(600)
Accrued interest and penalties related to uncertain tax positions		8,300	7,200
Non-current income tax payable
Net operating loss and tax credit carryforwards
Unrecognized tax benefits, uncertain tax positions		86,300	$ 88,500
Swiss Federal Tax Administration (FTA)
Net operating loss and tax credit carryforwards
Foreign net operating loss carryforwards		$ 30,800
Minimum
Net operating loss and tax credit carryforwards
Effective income tax rates (as a percent)				13.61%
Maximum
Net operating loss and tax credit carryforwards
Effective income tax rates (as a percent)			14.28%
Swiss
Net operating loss and tax credit carryforwards
Statutory income tax rate (as a percent)		8.50%	8.50%	8.50%
Decrease in uncertain tax positions			$ 53,300
Increase in unrecognized tax benefits			10,000
Amortization period				10 years
Expense (benefit) related to reversal of uncertain tax positions				$ 50,100
State and Local Jurisdiction \| California Franchise Tax Board
Net operating loss and tax credit carryforwards
Valuation allowance		$ 36,800	$ 36,400
Foreign:
Net operating loss and tax credit carryforwards
Foreign net operating loss carryforwards		400
Foreign tax credit carryforwards		$ 61,100

Income Taxes - Schedule of The Difference Between The Provision For Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2024
Amount
Pretax book income at Statutory rate	$ 70,250	$ 60,084	$ 52,836
Federal Tax Deduction	(4,436)
Participation Exemption	(33,617)
Other, net	4,213	(400)	671
Statutory tax rate difference		0	(50,051)
Foreign derived intangible income		(1,424)	(18,675)
Hong Kong - Tax exempt dividends			5,100
Changes in unrecognized tax benefits	(24,673)
Provision for income taxes	$ 115,332	$ 75,343	$ 9,453
As a percent
Pretax book income at Statutory rate	8.50%
Federal Tax Deduction	(0.50%)
Participation Exemption	(0.041)
Other, net	0.50%
Changes in unrecognized tax benefits	(3.00%)
Effective Tax Rate	14.00%
Vaud
Amount
Domestic state and local income taxes:	$ 43,812
As a percent
Domestic state and local income taxes:	5.30%
Zurich
Amount
Domestic state and local income taxes:	$ 415
As a percent
Domestic state and local income taxes:	0.10%
United States
Amount
Domestic state and local income taxes:	$ 4,189
Other, net	346
Statutory tax rate difference	13,948
Foreign derived intangible income	(4,192)
Tax credits	(6,022)
Non-deductible executive compensation	$ 4,314
As a percent
Domestic state and local income taxes:	0.50%
Other, net	0.00%
Statutory tax rate difference	1.70%
Foreign derived intangible income	(0.50%)
Tax credits	(0.70%)
Non-deductible executive compensation	0.50%
China
Amount
Other, net	$ 118
Statutory tax rate difference	$ 8,931
As a percent
Other, net	0.00%
Statutory tax rate difference	1.10%
HONG KONG
Amount
Hong Kong - Tax exempt dividends	$ (7,402)
As a percent
Hong Kong - Tax exempt dividends	(0.90%)
Other
Amount
Statutory tax rate difference	$ 45,138
As a percent
Statutory tax rate difference	5.50%

Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2024
Income Tax Disclosure [Abstract]
Expected tax provision at statutory income tax rates	$ 70,250	$ 60,084	$ 52,836
Income taxes at different rates		68,212	47,595
Research and development tax credits		(6,797)	(9,738)
Swiss Tax Benefits		0	(50,051)
Executive compensation		980	407
Stock-based compensation		(2,162)	4,019
Deferred tax effects from TRAF		0	(33,926)
Valuation allowance		1,000	4,780
Restructuring credits		(817)	0
Unrecognized tax benefits/ Audit resolution and statute lapse		(43,333)	11,535
FDII deduction		(1,424)	(18,675)
Other, net	4,213	(400)	671
Provision for income taxes	$ 115,332	$ 75,343	$ 9,453

Income Taxes - Schedule of Deferred Income Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Mar. 31, 2025
Deferred tax assets:
Tax attributes carryforward	$ 42,408	$ 43,536
Future tax deduction from Swiss Tax Benefits	50,630	48,267
Accruals	67,963	72,114
Tax step-up of goodwill from TRAF	73,512	86,519
Share-based compensation	20,228	15,411
Gross deferred tax assets	254,741	265,847
Valuation allowance	(36,922)	(36,537)
Deferred tax assets after valuation allowance	217,819	229,310
Deferred tax liabilities:
Acquired intangible assets and other	(23,975)	(27,788)
Deferred tax liabilities	(23,975)	(27,788)
Deferred tax assets, net	$ 193,844	$ 201,522

Income Taxes - Schedule of Income Taxes Paid, Net of Refunds Received (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2024
Income Tax Examination [Line Items]
Switzerland - Federal	$ 19,028
Switzerland - Cantonal:	21,967
Foreign:
Total Foreign	45,358
Total	86,353	$ 67,484	$ 50,855
Vaud
Income Tax Examination [Line Items]
Switzerland - Cantonal:	21,851
Zurich
Income Tax Examination [Line Items]
Switzerland - Cantonal:	116
United States
Foreign:
Total Foreign	6,502
China
Foreign:
Total Foreign	9,466
Japan
Foreign:
Total Foreign	5,283
Brazil
Foreign:
Total Foreign	5,059
Sweden
Foreign:
Total Foreign	4,551
Other
Foreign:
Total Foreign	$ 14,497

Income Taxes - Schedule of Aggregate Changes in Gross Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2024
Unrecognized Tax Benefits [Roll Forward]
Balance at the beginning of the period	$ 151,984	$ 210,215	$ 191,000
Lapse of statute of limitations	(23,176)	(25,075)	(3,863)
Settlements with taxing authorities			41
Increases in balances related to tax positions taken during prior years			705
Increases in balances related to tax positions taken during the year	3,673	2,213	22,332
Settlements with taxing authorities		(32,314)
Increases (decreases) in balances related to tax positions taken during prior years		(3,055)
Increases (decreases) in balances related to tax positions taken during prior years	(1,120)
Balance at the end of the period	$ 131,361	$ 151,984	$ 210,215

Balance Sheet Components - Schedule of Components of Certain Balance Sheet Asset Amounts (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Mar. 31, 2025
Accounts receivable, net:
Accounts receivable	$ 792,466	$ 708,693
Accounts receivable, net	505,867	454,546
Inventories:
Raw materials	62,484	48,699
Finished goods	427,464	455,048
Inventory, net	489,948	503,747
Other current assets:
Value-added tax ("VAT") receivables	58,600	46,332
Prepaid expenses and other assets	119,295	84,879
Other current assets, total	177,895	131,211
Property, plant and equipment, net:
Property, plant and equipment, gross	575,961	534,758
Less: accumulated depreciation and amortization	(470,964)	(429,889)
Property, plant and equipment before land and construction in progress	104,997	104,869
Property, plant and equipment, net	116,454	113,858
Other assets:
Deferred tax assets	192,083	202,180
Right-of-use assets	71,531	75,239
Investments for deferred compensation plan	30,495	29,006
Other assets	16,095	9,672
Other assets, total	339,075	344,077
Deferred Compensation Plan
Other assets:
Investments in privately held companies	28,871	27,980
Plant, buildings and improvements
Property, plant and equipment, net:
Property, plant and equipment, gross	93,023	88,041
Equipment and tooling
Property, plant and equipment, net:
Property, plant and equipment, gross	350,869	324,007
Computer equipment
Property, plant and equipment, net:
Property, plant and equipment, gross	28,108	26,881
Software
Property, plant and equipment, net:
Property, plant and equipment, gross	103,961	95,829
Construction-in-process
Property, plant and equipment, net:
Property, plant and equipment, gross	8,750	6,337
Land
Property, plant and equipment, net:
Property, plant and equipment, gross	2,707	2,652
Allowance for cooperative marketing arrangements
Accounts receivable, net:
Valuation allowance for accounts receivable	(49,964)	(44,457)
Allowance for customer incentive programs
Accounts receivable, net:
Valuation allowance for accounts receivable	(73,999)	(66,564)
Allowance for pricing programs
Accounts receivable, net:
Valuation allowance for accounts receivable	(144,800)	(105,876)
Other allowances
Accounts receivable, net:
Valuation allowance for accounts receivable	$ (17,836)	$ (37,250)

Balance Sheet Components - Schedule of Components of Certain Balance Sheet Liability Amounts (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Mar. 31, 2025
Accrued and other current liabilities:
Accrued customer marketing, pricing and incentive programs	$ 211,915	$ 173,401
Accrued personnel expenses	165,404	180,763
Deferred revenue	38,652	25,798
Income taxes payable	37,843	26,841
VAT payable	36,292	29,648
Warranty liabilities	35,488	34,428
Accrued sales return liability	27,635	27,913
Accrued loss for inventory purchase commitments	18,167	19,614
Operating lease liabilities	17,044	15,780
Other current liabilities	193,550	152,317
Accrued and other current liabilities	781,990	686,503
Other non-current liabilities:
Operating lease liabilities	71,111	76,622
Employee benefit plan obligations	61,066	57,338
Deferred revenue	53,624	38,216
Obligation for deferred compensation plan	30,495	29,006
Warranty liabilities	14,754	14,756
Other non-current liabilities	6,849	5,574
Non-current liabilities	$ 237,899	$ 221,512

Fair Value Measurements - Schedule of Financial Assets and Liabilities, Classified by Level (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Mar. 31, 2025
Deferred Compensation Plan
Assets
Investments in privately held companies	$ 28,871	$ 27,980
Level 1
Assets
Cash equivalents	863,120	852,467
Investments in privately held companies	30,495	29,006
Currency derivative assets	$ 0	$ 0
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Other Assets, Current	Other Assets, Current
Liabilities [Abstract]
Currency derivative liabilities	$ 0	$ 0
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Accrued and other current liabilities	Accrued and other current liabilities
Level 1 \| Deferred Compensation Plan \| Cash
Assets
Investments in privately held companies	$ 60	$ 90
Level 1 \| Deferred Compensation Plan \| Common stock
Assets
Investments in privately held companies	902	540
Level 1 \| Deferred Compensation Plan \| Money market funds
Assets
Investments in privately held companies	4,553	7,359
Level 1 \| Deferred Compensation Plan \| Mutual funds
Assets
Investments in privately held companies	24,980	21,017
Level 2
Assets
Cash equivalents	0	0
Investments in privately held companies	0	0
Currency derivative assets	$ 5,486	$ 90
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Other Assets, Current	Other Assets, Current
Liabilities [Abstract]
Currency derivative liabilities	$ 94	$ 2,849
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Accrued and other current liabilities	Accrued and other current liabilities
Level 2 \| Deferred Compensation Plan \| Cash
Assets
Investments in privately held companies	$ 0	$ 0
Level 2 \| Deferred Compensation Plan \| Common stock
Assets
Investments in privately held companies	0	0
Level 2 \| Deferred Compensation Plan \| Money market funds
Assets
Investments in privately held companies	0	0
Level 2 \| Deferred Compensation Plan \| Mutual funds
Assets
Investments in privately held companies	0	0
Level 3
Assets
Cash equivalents	0	0
Investments in privately held companies	0	0
Currency derivative assets	$ 0	$ 0
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Other Assets, Current	Other Assets, Current
Liabilities [Abstract]
Currency derivative liabilities	$ 0	$ 0
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Accrued and other current liabilities	Accrued and other current liabilities
Level 3 \| Deferred Compensation Plan \| Cash
Assets
Investments in privately held companies	$ 0	$ 0
Level 3 \| Deferred Compensation Plan \| Common stock
Assets
Investments in privately held companies	0	0
Level 3 \| Deferred Compensation Plan \| Money market funds
Assets
Investments in privately held companies	0	0
Level 3 \| Deferred Compensation Plan \| Mutual funds
Assets
Investments in privately held companies	$ 0	$ 0

Fair Value Measurements - Narrative (Details) - USD ($)	12 Months Ended
Fair Value Measurements - Narrative (Details) - USD ($)	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity method investment	$ 19,100,000	$ 18,400,000
Impairment of equity method investments	0	0	$ 0
Equity investments included in other assets	8,800,000	8,800,000
Financial asset impairment charges		0	0
Impairment loss, before tax			9,600,000
Impairment of intangible assets	0	0	$ 3,526,000
Impairment of non-financial assets	0	0
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments in privately held companies	$ 30,495,000	$ 29,006,000

Derivative Financial Instruments - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Foreign exchange forward and swap \| Not designated as hedging instrument
Derivative [Line Items]
Derivative, notional amount	$ 113.0	$ 131.8
Derivative term of contract	1 month
Foreign exchange forward \| Designated as hedging instruments
Derivative [Line Items]
Cash flow hedge loss to be reclassified within twelve months	$ 1.9
Foreign exchange forward \| Cash flow hedging \| Designated as hedging instruments
Derivative [Line Items]
Derivative, notional amount	$ 447.9	$ 74.6

Derivative Financial Instruments - Schedule of Gains and Losses on Derivative Instruments (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2024
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Deferred as a Component of Accumulated Other Comprehensive Loss	$ (8,214)	$ (703)	$ 1,109
Amount of Loss (Gain) Reclassified from Accumulated Other Comprehensive Loss to Cost of Goods Sold	13,321	(3,461)	3,964
Cash flow hedges \| Cash flow hedges
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Deferred as a Component of Accumulated Other Comprehensive Loss	(8,214)	(703)	1,109
Amount of Loss (Gain) Reclassified from Accumulated Other Comprehensive Loss to Cost of Goods Sold	$ 13,321	$ (3,461)	$ 3,964

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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+ Details

Goodwill and Other Intangible Assets - Schedule of Activity In Goodwill Balance (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Goodwill [Roll Forward]
Beginning of the period	$ 463,230	$ 461,978
Effects of foreign currency translation	2,187	1,252
End of the period	$ 465,417	$ 463,230

- Definition

Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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Reference 1: http://www.xbrl.org/2003/role/exampleRef
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+ Details

Goodwill and Other Intangible Assets - Schedule of Intangible Assets Subject to Amortization (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Mar. 31, 2025
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 210,245	$ 208,278
Accumulated Amortization	(197,859)	(183,648)
Net Carrying Amount	12,386	24,630
Effects of foreign currency translation, gross carrying amount	1,218	(620)
Effects of foreign currency translation, accumulated amortization	(962)	137
Total net carrying amount	256	(483)
Trademarks and trade names
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	32,390	32,390
Accumulated Amortization	(30,569)	(28,675)
Net Carrying Amount	1,821	3,715
Developed technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	107,550	107,421
Accumulated Amortization	(103,307)	(96,464)
Net Carrying Amount	4,243	10,957
Customer contracts/relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	69,087	69,087
Accumulated Amortization	(63,021)	(58,646)
Net Carrying Amount	$ 6,066	$ 10,441

Goodwill and Other Intangible Assets - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization of intangible assets	$ 13,315	$ 20,098	$ 21,681
2027	5,900
2028	4,300
2029	1,900
2030	$ 300

- Definition

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (b)
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147476148/220-40-50-6

+ Details

Financing Arrangements (Details)	Jan. 27, 2025 USD ($) extension	Mar. 31, 2026 USD ($)	Mar. 31, 2025 USD ($)
Financing Arrangements
Outstanding borrowings		$ 0	$ 0
Senior Unsecured Revolving Credit Facility \| Line of credit
Financing Arrangements
Option to increase credit facility, additional amount	$ 250,000,000.0
Extension term	1 year
Number of term extensions \| extension	2
Outstanding borrowings		0
Senior Unsecured Revolving Credit Facility \| Line of credit \| Minimum
Financing Arrangements
Basis spread on variable rate	0.00%
Senior Unsecured Revolving Credit Facility \| Line of credit \| Maximum
Financing Arrangements
Basis spread on variable rate	1.50%
Revolving Credit Facility \| Senior Unsecured Revolving Credit Facility \| Line of credit
Financing Arrangements
Maximum borrowing capacity	$ 750,000,000.0
Letter of Credit \| Senior Unsecured Revolving Credit Facility \| Line of credit
Financing Arrangements
Maximum borrowing capacity	$ 100,000,000.0
Line of credit
Financing Arrangements
Maximum borrowing capacity		149,000,000.0	172,200,000
Outstanding bank guarantees		$ 2,100,000	$ 12,100,000

Commitments and Contingencies - Schedule of Changes in Warranty Liabilities (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Changes in the warranty liability:
Beginning of the period	$ 49,184	$ 44,654
Provision	37,617	44,876
Settlements	(37,411)	(40,316)
Effects of foreign currency translation	852	(30)
End of the period	$ 50,242	$ 49,184

Commitments and Contingencies - Narrative (Details)	Mar. 31, 2026 USD ($)
Indemnification Agreement
Commitment and Contingency [Line Items]
Amount accrued for indemnification provisions	$ 0

Shareholders' Equity - Narrative (Details) SFr / shares in Units, $ / shares in Units, $ in Thousands, SFr in Millions			1 Months Ended												12 Months Ended
	Sep. 30, 2025 shares	Sep. 30, 2023 shares	May 31, 2026 SFr / shares	May 31, 2026 USD ($) $ / shares	Mar. 31, 2026 USD ($) shares	Sep. 30, 2025 SFr / shares shares	Sep. 30, 2025 USD ($) $ / shares shares	Jun. 30, 2025 USD ($) shares	Mar. 31, 2025 USD ($)	Sep. 30, 2024 SFr / shares	Sep. 30, 2024 USD ($) $ / shares shares	Sep. 30, 2023 SFr / shares shares	Sep. 30, 2023 USD ($) $ / shares shares	Jun. 30, 2023 USD ($)	Mar. 31, 2026 USD ($) $ / shares shares	Mar. 31, 2025 USD ($) $ / shares	Mar. 31, 2024 USD ($) $ / shares	Mar. 31, 2026 CHF (SFr) SFr / shares shares	Mar. 31, 2025 SFr / shares	Mar. 31, 2025 USD ($) shares	Mar. 31, 2022 USD ($)	Mar. 31, 2021 USD ($)	May 31, 2020 USD ($)
Shareholder's equity
Common stock outstanding					$ 28,001										$ 28,001			SFr 40.2		$ 29,432
Shares issued (in shares)					160,784,460										160,784,460			160,784,460		168,994,000
Shares, par value (in CHF per share) \| SFr / shares																		SFr 0.25	SFr 0.25
Treasury, at cost, shares (in shares)					17,281,896										17,281,896			17,281,896		20,485,000
Adjusted share capital period (in years)	5 years	5 years
Unappropriated retained earnings					$ 1,966,600										$ 1,966,600			SFr 1,573.5
Cash dividends per share (in dollars per share) \| $ / shares															$ 1.58	$ 1.37	$ 1.19
Cash dividends per share (in dollars per share) \| (per share)						SFr 1.26	$ 1.58			SFr 1.16	$ 1.37	SFr 1.06	$ 1.16
Payment of cash dividends \| $							$ 233,100				$ 207,900		$ 182,300		$ 233,059	$ 207,853	$ 182,305
Minimum percentage of annual net income to be retained in legal reserves (as a percent)															5.00%
Threshold of legal reserves as a percentage of issued and outstanding aggregate par value per share capital at which a minimum percentage of annual net income is no longer required to be retained (as a percent)					20.00%										20.00%			20.00%
Portion of appropriated retained earnings representing legal reserves \| $					$ 12,000										$ 12,000
Maximum percentage of shares held by the company and its subsidiaries					10.00%										10.00%			10.00%
Maximum shares available for purchase (in shares)					16,100,000										16,100,000			16,100,000
Shares acquired for cancellation (in shares)															4,700,000
Shares acquired for equity incentive plans or potential acquisitions (in shares)															12,600,000
Forecast
Shareholder's equity
Cash dividends per share (in dollars per share) \| (per share)			SFr 1.36	$ 1.70
Common stock dividends \| $				$ 243,900
2023 Share Repurchase Program
Shareholder's equity
Cancellation of treasury shares (in shares)								8,200,000			4,100,000
Treasury shares repurchased \| $								$ 712,200			$ 332,100
Share repurchase, authorized amount (up to) \| $														$ 1,000,000						$ 1,600,000
Period for which repurchase program will remain in effect (in years)														3 years
Increase in authorized amount under share repurchase program \| $									$ 600,000
Amount of authorized shares available for repurchase \| $					$ 91,800										$ 91,800
2020 Share Repurchase Program
Shareholder's equity
Share repurchase, authorized amount (up to) \| $																					$ 1,500,000	$ 1,500,000	$ 250,000
2026 Share Repurchase Program
Shareholder's equity
Share repurchase, authorized amount (up to) \| $					$ 1,400,000										$ 1,400,000
Period for which repurchase program will remain in effect (in years)					3 years
Shares approved (in shares)					16,078,446										16,078,446			16,078,446
Common stock capital shares reserved for future issuance, employee equity incentive plans
Shareholder's equity
Shares that may be issued out of conditional capital (in shares)					25,000,000										25,000,000			25,000,000
Common stock capital shares reserved for future issuance, conversion rights under future convertible bond issuance
Shareholder's equity
Shares that may be issued out of conditional capital (in shares)					25,000,000										25,000,000			25,000,000
Minimum
Shareholder's equity
Number of adjusted share capital (in shares)	144,706,014	155,795,958				144,706,014	144,706,014					155,795,958	155,795,958
Maximum
Shareholder's equity
Number of adjusted share capital (in shares)	176,862,906	190,417,282				176,862,906	176,862,906					190,417,282	190,417,282

Shareholders' Equity - Schedule of Shares Repurchased (Details) - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2024
Share Repurchase Program [Line Items]
Aggregate cost of shares repurchased	$ 557,043	$ 588,028	$ 523,751
2023 Share Repurchase Program
Share Repurchase Program [Line Items]
Number of shares repurchased (in shares)	6,167	6,679	4,459
Aggregate cost of shares repurchased	$ 557,043	$ 588,028	$ 364,639
Shares repurchased for cancellation (in shares)			4,100
Shares repurchased for cancellation			$ 332,100
Aggregate cost of shares repurchased but not yet paid	$ 40,800	$ 18,700	$ 19,500
2020 Share Repurchase Program
Share Repurchase Program [Line Items]
Number of shares repurchased (in shares)	0	0	2,641
Aggregate cost of shares repurchased	$ 0	$ 0	$ 159,112

- Definition

Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

+ References + Details

- Definition

Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

+ References + Details

Shareholders' Equity - Schedule of Components of Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2024
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning of the period	$ 2,127,420	$ 2,233,653	$ 2,257,560
Other comprehensive income (loss)	33,135	(35,750)	(10,925)
End of the period balance	2,211,394	2,127,420	2,233,653
Total
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning of the period	(146,952)	(111,202)	(100,277)
End of the period balance	(113,817)	(146,952)	$ (111,202)
Currency Translation Adjustment
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning of the period	(118,652)
Other comprehensive income (loss)	24,496
End of the period balance	(94,156)	(118,652)
Defined Benefit Plans
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning of the period	(25,276)
Other comprehensive income (loss)	3,532
End of the period balance	(21,744)	(25,276)
Deferred Hedging Gains (Losses)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning of the period	(3,024)
Other comprehensive income (loss)	5,107
End of the period balance	$ 2,083	$ (3,024)

- Definition

Amount of equity (deficit) attributable to parent. Excludes temporary equity and equity attributable to noncontrolling interest.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
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+ Details

Segment Information - Schedule of Segment Revenue, Gross Profit, and Net Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2024
Segment Reporting Information [Line Items]
Net sales	$ 4,840,761	$ 4,554,900	$ 4,298,467
Less: Significant segment expenses
Cost of goods sold	2,742,407	2,582,745	2,509,418
Share-based compensation expense	112,392	89,913	82,889
Interest income	(48,246)	(54,997)	(50,636)
Provision for income taxes	115,332	75,343	9,453
Net income	711,187	631,529	612,143
Reportable Segment
Segment Reporting Information [Line Items]
Net sales	4,840,761	4,554,900	4,298,467
Less: Significant segment expenses
Cost of goods sold	2,731,776	2,572,724	2,501,414
Marketing and selling	774,098	774,036	694,530
Research and development	293,317	288,828	269,407
General and administrative	130,809	144,680	133,787
Share-based compensation expense	112,392	89,913	82,889
Amortization of intangible assets and acquisition-related costs	13,315	20,249	21,962
Interest income	(48,246)	(54,997)	(50,636)
Other	6,781	12,595	23,518
Provision for income taxes	115,332	75,343	9,453
Net income	$ 711,187	$ 631,529	$ 612,143

Segment Information - Schedule of Net Sales by Product Categories, Excluding Intercompany Transactions (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2024
Segment Reporting Information [Line Items]
Net sales	$ 4,840,761	$ 4,554,900	$ 4,298,467
Gaming
Segment Reporting Information [Line Items]
Net sales	1,414,206	1,338,467	1,231,063
Keyboards & Combos
Segment Reporting Information [Line Items]
Net sales	937,551	882,643	821,441
Pointing Devices
Segment Reporting Information [Line Items]
Net sales	858,904	788,784	742,987
Video Collaboration
Segment Reporting Information [Line Items]
Net sales	689,040	626,000	609,361
Webcams
Segment Reporting Information [Line Items]
Net sales	326,172	315,520	325,225
Tablet Accessories
Segment Reporting Information [Line Items]
Net sales	336,189	299,540	254,060
Headsets
Segment Reporting Information [Line Items]
Net sales	179,825	179,710	168,478
Other
Segment Reporting Information [Line Items]
Net sales	$ 98,874	$ 124,236	$ 145,852

Segment Information - Schedule of Net Sales and Long-Lived Assets by Geographic Region (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2024
Net sales to unaffiliated customers and long-lived assets by geographic region
Total Sales	$ 4,840,761	$ 4,554,900	$ 4,298,467
Property, plant and equipment, net	172,311	170,105
Americas
Net sales to unaffiliated customers and long-lived assets by geographic region
Total Sales	1,955,191	1,973,374	1,896,258
Property, plant and equipment, net	59,103	61,521
EMEA
Net sales to unaffiliated customers and long-lived assets by geographic region
Total Sales	1,539,065	1,413,855	1,301,515
Property, plant and equipment, net	48,119	47,874
Asia Pacific
Net sales to unaffiliated customers and long-lived assets by geographic region
Total Sales	1,346,505	1,167,671	$ 1,100,694
Property, plant and equipment, net	$ 65,089	$ 60,710

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-40

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-22

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-4

+ Details

Segment Information - Narrative (Details) $ in Thousands	12 Months Ended
Segment Information - Narrative (Details) $ in Thousands	Mar. 31, 2026 USD ($) milestone segment	Mar. 31, 2025 USD ($)	Mar. 31, 2024
Segment Reporting Information [Line Items]
Number of operating segments (in segments) \| segment	1
Number of reportable segments (in segments) \| milestone	1
Long lived assets	$ 172,311	$ 170,105
United States
Segment Reporting Information [Line Items]
Long lived assets	$ 57,600	$ 60,000
United States \| Revenue benchmark \| Geographic concentration
Segment Reporting Information [Line Items]
Concentration credit risk by major customer (as a percent)	33.00%	35.00%	36.00%
Germany \| Revenue benchmark \| Geographic concentration
Segment Reporting Information [Line Items]
Concentration credit risk by major customer (as a percent)	12.00%	12.00%	14.00%
China
Segment Reporting Information [Line Items]
Long lived assets	$ 48,000	$ 43,400
China \| Revenue benchmark \| Geographic concentration
Segment Reporting Information [Line Items]
Concentration credit risk by major customer (as a percent)	12.00%	10.00%	10.00%
Switzerland
Segment Reporting Information [Line Items]
Long lived assets	$ 25,000	$ 24,100
Switzerland \| Revenue benchmark \| Geographic concentration
Segment Reporting Information [Line Items]
Concentration credit risk by major customer (as a percent)	4.00%	3.00%	2.00%

Restructuring (Details) - USD ($) $ in Thousands	12 Months Ended
Restructuring (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2024
Restructuring reserve
Charges, net	$ 9,860	$ 9,615	$ 3,866
Continuing operations
Restructuring reserve
Balance at the beginning of the period	10,080	3,268	19,534
Charges, net	9,860	9,615	3,866
Cash payments	(15,857)	(2,803)	(20,132)
Balance at the end of the period	4,083	10,080	3,268
Continuing operations \| Termination Benefits
Restructuring reserve
Balance at the beginning of the period	9,097	1,813	14,177
Charges, net	7,584	9,846	6,011
Cash payments	(13,558)	(2,562)	(18,375)
Balance at the end of the period	3,123	9,097	1,813
Continuing operations \| Contract Termination and Other
Restructuring reserve
Balance at the beginning of the period	983	1,455	5,357
Charges, net	2,276	(231)	(2,145)
Cash payments	(2,299)	(241)	(1,757)
Balance at the end of the period	$ 960	$ 983	$ 1,455

- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References + Details

Leases - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
Leases - Narrative (Details) - USD ($) $ in Millions	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2024
Leases [Abstract]
Operating lease costs	$ 19.1	$ 19.3	$ 19.5

Leases - Schedule of Supplemental Information Related to Operating Leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2024
Leases [Abstract]
Cash paid for amounts included in the measurement of operating lease liabilities	$ 18,056	$ 16,847	$ 13,489
ROU assets obtained in exchange for operating lease liabilities	$ 6,902	$ 26,767	$ 8,593

Leases - Schedule of Maturity of Lease Liabilities Under Non-Cancelable Operating Leases (Details) $ in Thousands	Mar. 31, 2026 USD ($)
Leases [Abstract]
2027	$ 18,222
2028	14,786
2029	14,242
2030	12,261
2031	10,496
Thereafter	29,549
Total lease payments	99,556
Less: imputed interest	(11,401)
Present value of lease liabilities	$ 88,155

Leases - Schedule of Average Lease Terms and Discount Rates (Details)	Mar. 31, 2026	Mar. 31, 2025
Leases [Abstract]
Weighted-average remaining lease terms (in years)	6 years 10 months 24 days	7 years 7 months 6 days
Weighted-average discount rate	3.60%	3.60%

Schedule II - VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2024
Allowance for cooperative marketing arrangements
VALUATION AND QUALIFYING ACCOUNTS
Balance at Beginning of Year	$ 44,457	$ 41,634	$ 40,495
Charged (Credited) to Statement of Operations	305,257	257,940	232,837
Claims and Adjustments Applied Against Allowances	(299,750)	(255,117)	(231,698)
Balance at End of Year	49,964	44,457	41,634
Allowance for customer incentive programs
VALUATION AND QUALIFYING ACCOUNTS
Balance at Beginning of Year	66,564	60,027	71,645
Charged (Credited) to Statement of Operations	368,668	337,039	299,351
Claims and Adjustments Applied Against Allowances	(361,233)	(330,502)	(310,969)
Balance at End of Year	73,999	66,564	60,027
Allowance for pricing programs
VALUATION AND QUALIFYING ACCOUNTS
Balance at Beginning of Year	105,876	91,280	98,822
Charged (Credited) to Statement of Operations	931,144	760,024	707,954
Claims and Adjustments Applied Against Allowances	(892,220)	(745,428)	(715,496)
Balance at End of Year	144,800	105,876	91,280
Other allowances
VALUATION AND QUALIFYING ACCOUNTS
Balance at Beginning of Year	37,250	10,180	10,232
Charged (Credited) to Statement of Operations	148,558	170,495	141,909
Claims and Adjustments Applied Against Allowances	(167,972)	(143,425)	(141,961)
Balance at End of Year	17,836	37,250	10,180
Tax valuation allowance:
VALUATION AND QUALIFYING ACCOUNTS
Balance at Beginning of Year	36,537	35,536	30,766
Charged (Credited) to Statement of Operations	385	1,000	4,770
Claims and Adjustments Applied Against Allowances	0	0	0
Balance at End of Year	$ 36,922	$ 36,537	$ 35,536