CASTLIGHT HEALTH, INC., 10-Q filed on 8/4/2021
Quarterly Report
v3.21.2
Cover - shares
6 Months Ended
Jun. 30, 2021
Jul. 31, 2021
Document Information [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Jun. 30, 2021  
Document Transition Report false  
Entity File Number 001-36330  
Entity Registrant Name CASTLIGHT HEALTH, INC.  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 26-1989091  
Entity Address, Address Line One 150 Spear Street  
Entity Address, Address Line Two Suite 400  
Entity Address, City or Town San Francisco  
Entity Address, State or Province CA  
Entity Address, Postal Zip Code 94105  
City Area Code 415  
Local Phone Number 829-1400  
Title of 12(b) Security Class B Common Stock, par value $0.0001 per share  
Trading Symbol CSLT  
Security Exchange Name NYSE  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company false  
Entity Shell Company false  
Amendment Flag false  
Document Fiscal Year Focus 2021  
Document Fiscal Period Focus Q2  
Entity Central Index Key 0001433714  
Current Fiscal Year End Date --12-31  
Class A common stock    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   28,397,210
Class B common stock    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   131,854,658
v3.21.2
CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
Current assets:    
Cash and cash equivalents $ 60,706 $ 49,242
Accounts receivable and other, net 21,735 31,740
Prepaid expenses and other current assets 8,716 3,800
Total current assets 91,157 84,782
Property and equipment, net 4,485 5,321
Restricted cash, non-current 0 1,144
Deferred commissions 7,181 9,556
Deferred professional service costs 3,874 4,462
Intangible assets, net 5,814 7,930
Goodwill 41,485 41,485
Operating lease right-of-use assets, net 8,006 10,238
Other assets 106 1,855
Total assets 162,108 166,773
Current liabilities:    
Accounts payable 3,729 5,145
Accrued expenses and other current liabilities 5,175 7,898
Accrued compensation 7,104 8,633
Deferred revenue 9,993 6,848
Operating lease liabilities 6,092 5,789
Total current liabilities 32,093 34,313
Deferred revenue, non-current 87 663
Operating lease liabilities, non-current 4,338 7,446
Other liabilities, non-current 335 485
Total liabilities 36,853 42,907
Commitments and contingencies
Stockholders’ equity:    
Additional paid-in capital 647,849 641,075
Accumulated deficit (522,610) (517,225)
Total stockholders’ equity 125,255 123,866
Total liabilities and stockholders’ equity 162,108 166,773
Class A common stock    
Stockholders’ equity:    
Common stock 3 4
Class B common stock    
Stockholders’ equity:    
Common stock $ 13 $ 12
v3.21.2
CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares
Jun. 30, 2021
Dec. 31, 2020
Class A common stock    
Common stock Par value (usd per share) $ 0.0001 $ 0.0001
Common stock authorized (in shares) 200,000,000 200,000,000
Common stock issued (in shares) 28,397,210 34,998,171
Common stock outstanding (in shares) 28,397,210 34,998,171
Class B common stock    
Common stock Par value (usd per share) $ 0.0001 $ 0.0001
Common stock authorized (in shares) 800,000,000 800,000,000
Common stock issued (in shares) 131,584,908 120,768,900
Common stock outstanding (in shares) 131,584,908 120,768,900
v3.21.2
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)
shares in Thousands, $ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Revenue:        
Total revenue, net $ 35,603 $ 35,500 $ 70,662 $ 74,545
Cost of revenue:        
Total cost of revenue 12,158 12,761 24,914 27,234
Gross profit 23,445 22,739 45,748 47,311
Operating expenses:        
Sales and marketing [1] 7,208 7,683 14,121 18,155
Research and development [1] 12,316 13,043 24,429 26,865
General and administrative [1] 6,366 6,340 12,732 12,916
Goodwill impairment 0 0 0 50,300
Total operating expenses 25,890 27,066 51,282 108,236
Operating loss (2,445) (4,327) (5,534) (60,925)
Other income, net 56 123 149 386
Net loss $ (2,389) $ (4,204) $ (5,385) $ (60,539)
Net loss per share, basic (in usd per share) $ (0.02) $ (0.03) $ (0.03) $ (0.41)
Net loss per share, diluted (in usd per share) $ (0.02) $ (0.03) $ (0.03) $ (0.41)
Weighted-average shares used to compute diluted net loss per share (in usd per share) 158,951 150,078 157,872 149,475
Weighted-average shares used to compute basic net loss per share (in usd per share) 158,951 150,078 157,872 149,475
Subscription        
Revenue:        
Total revenue, net $ 31,128 $ 34,289 $ 63,238 $ 72,672
Cost of revenue:        
Total cost of revenue [1] 7,977 8,819 16,076 19,051
Professional services and other        
Revenue:        
Total revenue, net 4,475 1,211 7,424 1,873
Cost of revenue:        
Total cost of revenue [1] $ 4,181 $ 3,942 $ 8,838 $ 8,183
[1] Includes stock-based compensation expense as follows:
 Three Months Ended June 30,Six Months Ended June 30,
 2021202020212020
Cost of revenue:
Cost of subscription$222 $205 $479 $374 
Cost of professional services and other184 144 420 260 
Sales and marketing442 748 792 1,420 
Research and development1,060 1,314 2,129 2,477 
General and administrative1,262 858 2,457 1,924 
v3.21.2
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Parenthetical) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Subscription        
Stock-based compensation expense $ 222 $ 205 $ 479 $ 374
Professional services and other        
Stock-based compensation expense 184 144 420 260
Sales and marketing        
Stock-based compensation expense 442 748 792 1,420
Research and development        
Stock-based compensation expense 1,060 1,314 2,129 2,477
General and administrative        
Stock-based compensation expense $ 1,262 $ 858 $ 2,457 $ 1,924
v3.21.2
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Statement of Comprehensive Income [Abstract]        
Net loss $ (2,389) $ (4,204) $ (5,385) $ (60,539)
Other comprehensive loss:        
Net change in unrealized loss on available-for-sale marketable securities 0 (13) 0 (2)
Other comprehensive loss 0 (13) 0 (2)
Comprehensive loss $ (2,389) $ (4,217) $ (5,385) $ (60,541)
v3.21.2
CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($)
$ in Thousands
Total
Class A and B Common Stock
Additional Paid-In Capital
Accumulated Other Comprehensive Income (Loss)
Accumulated Deficit
Beginning balance (in shares) at Dec. 31, 2019   148,209,215      
Beginning balance at Dec. 31, 2019 $ 172,874 $ 15 $ 627,899 $ 2 $ (455,042)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Vesting of restricted stock units (in shares)   2,032,476      
Issuance of common stock upon exercise of stock options (in shares)   142,729      
Issuance of common stock upon exercise of stock options 155   155    
Issuance of common stock under the ESPP (in shares)   242,007      
Issuance of common stock under the ESPP 186   186    
Stock-based compensation 6,490   6,490    
Comprehensive loss (60,541)     (2) (60,539)
Ending balance (in shares) at Jun. 30, 2020   150,626,427      
Ending balance at Jun. 30, 2020 119,164 $ 15 634,730 0 (515,581)
Beginning balance (in shares) at Mar. 31, 2020   149,517,644      
Beginning balance at Mar. 31, 2020 120,096 $ 15 631,445 13 (511,377)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Vesting of restricted stock units (in shares)   1,108,783      
Stock-based compensation 3,285   3,285    
Comprehensive loss (4,217)     (13) (4,204)
Ending balance (in shares) at Jun. 30, 2020   150,626,427      
Ending balance at Jun. 30, 2020 119,164 $ 15 634,730 0 (515,581)
Beginning balance (in shares) at Dec. 31, 2020   155,767,071      
Beginning balance at Dec. 31, 2020 $ 123,866 $ 16 641,075 0 (517,225)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Vesting of restricted stock units (in shares)   3,823,580      
Issuance of common stock upon exercise of stock options (in shares) 177,527 177,527      
Issuance of common stock upon exercise of stock options $ 226   226    
Issuance of common stock under the ESPP (in shares)   213,940      
Issuance of common stock under the ESPP 233   233    
Stock-based compensation 6,315   6,315    
Comprehensive loss (5,385)       (5,385)
Ending balance (in shares) at Jun. 30, 2021   159,982,118      
Ending balance at Jun. 30, 2021 125,255 $ 16 647,849 0 (522,610)
Beginning balance (in shares) at Mar. 31, 2021   157,918,739      
Beginning balance at Mar. 31, 2021 124,361 $ 16 644,566 0 (520,221)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Vesting of restricted stock units (in shares)   1,979,813      
Issuance of common stock upon exercise of stock options (in shares)   83,566      
Issuance of common stock upon exercise of stock options 99   99    
Stock-based compensation 3,184   3,184    
Comprehensive loss (2,389)       (2,389)
Ending balance (in shares) at Jun. 30, 2021   159,982,118      
Ending balance at Jun. 30, 2021 $ 125,255 $ 16 $ 647,849 $ 0 $ (522,610)
v3.21.2
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Operating activities:    
Net loss $ (5,385) $ (60,539)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:    
Depreciation and amortization 3,239 3,144
Goodwill impairment 0 50,300
Stock-based compensation 6,277 6,455
Amortization and impairment of deferred commissions 2,568 3,919
Amortization and impairment of deferred professional service costs 1,147 1,657
Non-cash operating lease expense 2,232 2,631
Other 19 2
Changes in operating assets and liabilities:    
Accounts receivable and other, net 10,005 (1,778)
Deferred commissions (193) (920)
Deferred professional service costs (521) (629)
Prepaid expenses and other assets (2,023) (824)
Accounts payable (1,458) (10,201)
Operating lease liabilities (2,805) (2,616)
Accrued expenses and other liabilities (1,943) (1,511)
Deferred revenue 2,569 2,762
Accrued compensation (1,529) (3,114)
Net cash provided by (used in) operating activities 12,199 (11,262)
Investing activities:    
Purchase of property and equipment (245) (3,299)
Purchase of marketable securities 0 (2,994)
Sales of marketable securities 0 2,001
Maturities of marketable securities 0 17,400
Net cash (used in) provided by investing activities (245) 13,108
Financing activities:    
Proceeds from exercise of stock options 226 155
Proceeds from ESPP offering 233 186
Principal payments on debt (930) (930)
Net cash used in financing activities (471) (589)
Effect of exchange rate changes on cash, cash equivalents, and restricted cash (19) 0
Net increase in cash, cash equivalents and restricted cash 11,464 1,257
Cash, cash equivalents and restricted cash at beginning of period 50,386 44,342
Cash, cash equivalents and restricted cash at end of period 61,850 45,599
Reconciliation of cash, cash equivalents and restricted cash:    
Cash and cash equivalents 60,706 44,274
Restricted cash included in Prepaid expenses and other current assets 1,144 181
Restricted cash, non-current 0 1,144
Total cash, cash equivalents and restricted cash $ 61,850 $ 45,599
v3.21.2
Organization and Description of Business
6 Months Ended
Jun. 30, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Organization and Description of Business Organization and Description of Business Castlight Health, Inc. (“Castlight” or “the Company”) provides health navigation solutions for large U.S. employers and health plans (“customers”) and their respective employees and members (“users”). Castlight’s offerings help individuals connect and engage with the right provider, benefit, or virtual care solution, at the right time, leveraging a combination of sophisticated technology and an expert team. Castlight’s navigation offerings have demonstrated measurable results, driving high engagement and user satisfaction, increased program utilization, steerage to the right care and provider, and lower healthcare costs for its customers and millions of users. The Company was incorporated in the State of Delaware in January 2008. The Company's principal executive offices are located in San Francisco, California, and its Customer Center of Excellence is located in Sandy, Utah. In the second quarter of 2021, Castlight formed a wholly owned subsidiary in India, Castlight Health India Private Limited ("Castlight India").
v3.21.2
Accounting Standards and Significant Accounting Policies
6 Months Ended
Jun. 30, 2021
Accounting Policies [Abstract]  
Accounting Standards and Significant Accounting Policies Accounting Standards and Significant Accounting Policies
Basis of Presentation and Principles of Consolidation

The accompanying unaudited condensed consolidated financial statements include Castlight and its wholly-owned subsidiaries. All intercompany balances and transactions have been eliminated in consolidation. The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) and applicable rules and regulations of the Securities and Exchange Commission (“SEC”) regarding interim financial reporting. In the opinion of management, the information herein reflects all adjustments, consisting only of normal recurring adjustments except as otherwise noted, considered necessary for a fair statement of results of operations, financial position, stockholders’ equity and cash flows. The results for the interim periods presented are not necessarily indicative of the results expected for any future period. The following information should be read in conjunction with the audited financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2020. 

Other than as described below, there have been no changes to the Company's significant accounting policies described in the Company's Annual Report that have had a material impact on the Company's consolidated financial statements and related notes.

Use of Estimates

The preparation of condensed consolidated financial statements in conformity with GAAP requires the Company to make certain estimates, judgments and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of the date of the financial statements, as well as the reported amounts of revenue and expenses during the reporting period. These estimates include, but are not limited to the determination of:

Variable consideration included in the transaction price of the Company’s contracts with customers;
The standalone selling price of the performance obligations in the Company’s contracts with customers;
Assumptions used in the valuation of certain equity awards;
Assumptions used in the calculation of goodwill impairment, including the forecast of future cash flows and discount rate; and
Assumptions used in the calculation of right-of-use assets ("ROU") and lease liabilities for operating leases, including lease terms and the Company’s incremental borrowing rate.

Actual results could differ from those estimates, and such differences could be material to the Company’s consolidated financial position and results of operations.

Concentrations of Risk and Significant Customers

Anthem Inc. ("Anthem") accounted for approximately 49% of total revenue during the three and six months ended June 30, 2021. One other customer accounted for approximately 11% of total revenue during the three months ended June 30, 2021. Anthem also accounted for approximately 11% of accounts receivable, excluding contract assets, as of June 30, 2021.
Additionally, three other customers accounted for approximately 19%, 14% and 12%, respectively, of accounts receivable, excluding contract assets, as of June 30, 2021.

Recently Issued Accounting Pronouncements

The Company considers the applicability and impact of all ASUs issued by the FASB. The Company determined that the ASUs issued by the FASB during the six months ended June 30, 2021 are either not applicable or are expected to have minimal impact on the Company's condensed consolidated financial results.
v3.21.2
Revenue, Deferred Revenue, Contract Balances and Performance Obligations
6 Months Ended
Jun. 30, 2021
Revenue from Contract with Customer [Abstract]  
Revenue, Deferred Revenue, Contract Balances and Performance Obligations Revenue, Deferred Revenue, Contract Balances and Performance Obligations
The Company sells to customers based in the United States.

Deferred revenue as of June 30, 2021 and December 31, 2020 was $10.1 million and $7.5 million, respectively. Contract assets as of June 30, 2021 and December 31, 2020 were $5.9 million and $9.4 million, respectively. The decrease in contract assets is primarily due to the Anthem enterprise license agreement that results in invoicing ahead of revenue recognition beginning in the second year of that agreement.

Revenue of $6.8 million and $6.6 million was recognized during the three months ended June 30, 2021 and 2020, respectively, that was included in the Company’s deferred revenue balances at the beginning of the respective periods. Revenue of $6.7 million and $8.8 million was recognized during the six months ended June 30, 2021 and 2020, respectively, that was included in the Company’s deferred revenue balances at the beginning of the respective periods.

The Company recorded favorable cumulative catch-up adjustments to revenue of $0.2 million and $0.4 million during the three months ended June 30, 2021 and 2020, respectively, arising from changes in variable consideration. The Company recorded favorable cumulative catch-up adjustments to revenue of $1.4 million and $2.1 million during the six months ended June 30, 2021 and 2020, respectively, arising from changes in variable consideration.

The aggregate balance of remaining performance obligations from non-cancelable contracts with customers as of June 30, 2021 was $118.4 million. The Company expects to recognize approximately 90% of this balance over the next 12 months, with the remaining balance recognized thereafter. Remaining performance obligations are defined as deferred revenue and amounts yet to be billed for the non-cancelable portion of contracts.
v3.21.2
Deferred Costs
6 Months Ended
Jun. 30, 2021
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]  
Deferred Costs Deferred Costs
Changes in the balance of total deferred commissions and total deferred professional service costs during the six months ended June 30, 2021 are as follows (in thousands):
As of December 31, 2020AdditionsAdjustment to prior year additionsExpense recognizedAs of June 30, 2021
Deferred commissions$9,556 $394 $(201)$(2,568)$7,181 
Deferred professional service costs4,462 559 — (1,147)3,874 
Total deferred commissions and professional service costs
$14,018 $953 $(201)$(3,715)$11,055 

    These costs are reviewed for impairment quarterly. Impairment charges were $0.2 million for the three months ended June 30, 2021 and 2020. Impairment charges were $0.5 million and $1.3 million for the six months ended June 30, 2021 and 2020, respectively.
v3.21.2
Goodwill and Intangible Assets
6 Months Ended
Jun. 30, 2021
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Intangible Assets Goodwill and Intangible Assets
Impairment

During the first quarter of 2020, the Company determined that the significant decline in the U.S. economy as a result of the COVID-19 pandemic, together with the decline in the Company’s stock price, constituted a triggering event which required the Company to perform interim impairment analyses related to its long-lived assets and goodwill. The impairment analysis for long-lived assets indicated that the assets were recoverable; therefore, no impairment was recorded. After assessing long-lived assets, the Company performed a goodwill impairment analysis and determined that the carrying value of its only reporting unit exceeded its fair value by approximately $50.3 million. The fair value was determined using the income approach. The Company believes that the income approach is the most reliable indication of fair value since it incorporates future estimated revenues and expenses for the reporting unit that the market approach may not directly incorporate. In addition to future estimated revenue and expenses, the determination of fair value included assumptions related to a discount rate.

As of June 30, 2021, the Company determined that there were no indicators present to suggest that it was more likely than not that the fair value of the reporting unit was less than its carrying amount. The Company will continue to monitor its goodwill on a quarterly basis for indicators of impairment, including, but not limited to, future declines in the stock price. Accordingly, there may be future impairments.

Goodwill

The Company’s goodwill relates entirely to the acquisition of Jiff in 2017. As of June 30, 2021, the gross amount of goodwill was $91.8 million and accumulated goodwill impairment was $50.3 million, all of which was recorded in the first quarter of 2020. The goodwill impairment did not involve any cash expenditures.

Intangible assets, net

Identified intangible assets are recorded at their estimated fair values at the date of acquisition and are amortized over their respective estimated useful lives using a method of amortization that reflects the pattern in which the economic benefits of the intangible assets are used.

The following tables set forth the fair value components of identifiable acquired intangible assets (dollars in thousands):
As of June 30, 2021
Useful LifeGrossAccumulated AmortizationNet
Customer relationships6$10,900 $(6,676)$4,224 
Developed technology510,600 (9,010)1,590 
Total identifiable intangible assets$21,500 $(15,686)$5,814 
As of December 31, 2020
Useful LifeGrossAccumulated AmortizationNet
Customer relationships6$10,900 $(5,620)$5,280 
Developed technology510,600 (7,950)2,650 
Total identifiable intangible assets$21,500 $(13,570)$7,930 

Amortization expense from acquired intangible assets for the three months ended June 30, 2021 and 2020 was $1.1 million. Amortization expense from acquired intangible assets for the six months ended June 30, 2021 and 2020 was $2.1 million. Amortization expense is included in cost of subscription, sales and marketing, and general and administrative expenses.
Future estimated amortization expense for acquired intangible assets is as follows (in thousands):
Remainder of 2021$2,116 
20222,642 
20231,056 
Total estimated amortization expense$5,814 
v3.21.2
Property and Equipment
6 Months Ended
Jun. 30, 2021
Property, Plant and Equipment [Abstract]  
Property and Equipment Property and Equipment
Property and equipment consisted of the following (in thousands):
As of
 June 30, 2021December 31, 2020
Leasehold improvements$4,606 $4,606 
Computer equipment8,034 7,655 
Software844 908 
Internal-use software3,878 3,878 
Furniture and equipment1,492 1,492 
Construction in progress31 128 
Total18,885 18,667 
Accumulated depreciation/amortization(14,400)(13,346)
Property and equipment, net$4,485 $5,321 
Depreciation and amortization expense for the three months ended June 30, 2021 and 2020 was $0.6 million. Depreciation and amortization expense for the six months ended June 30, 2021 and 2020 was $1.1 million and $1.0 million, respectively. Depreciation and amortization expense is recorded on a straight-line basis.
v3.21.2
Debt
6 Months Ended
Jun. 30, 2021
Debt Disclosure [Abstract]  
Debt Debt
Term Loan

The Company has a term loan facility (the “Loan Agreement”) with Silicon Valley Bank (the “Bank”) that provided for a term loan of approximately $5.6 million (the “Term Loan”). Obligations under the Term Loan accrue interest at a floating per annum rate equal to the greater of (A) the prime rate as published in the money rates section of The Wall Street Journal (“Prime Rate”) minus 1% or (B) 0%. Interest and principal on the Term Loan are payable monthly. The maturity date of the Term Loan is September 1, 2021, and the outstanding principal balance of $0.5 million, as well as the final payment discussed below, are classified within accrued expenses and other current liabilities on the condensed consolidated balance sheet as of June 30, 2021.

In addition to principal and interest payments, the Company is also required to pay $0.5 million as final payment on the earlier of maturity, termination or prepayment of the Term Loan. The Company accrues for the final payment over the life of the Term Loan using the effective interest method.

In accordance with the Loan Agreement, the Company is subject to certain reporting covenants, and the debt obligations are secured by a security interest in the assets of the Company, excluding intellectual property and certain other exceptions. The Company was in compliance with all reporting covenants in the Loan Agreement related to the outstanding principal balance as of June 30, 2021.

Revolving Line of Credit

On May 5, 2020, the Company entered into the Third Amended and Restated Loan and Security Agreement (the "Amended Loan Agreement") with the Bank. The Amended Loan Agreement amended and restated its existing Loan Agreement. Under the Amended Loan Agreement, the Bank agreed to extend a $25.0 million revolving credit facility to the Company (the “Revolving Line”). Borrowings under the Revolving Line accrue interest at a floating per annum rate equal to
the Prime Rate plus 1%, and such interest is payable monthly. The Company may request borrowings under the Revolving Line prior to May 4, 2023, on which date the Revolving Line terminates. In relation to the Revolving Line, the Company is subject to certain financial and reporting covenants. As of June 30, 2021, no borrowings have been made under the Revolving Line, and the Company was in compliance with all financial and reporting covenants.
v3.21.2
Contingencies
6 Months Ended
Jun. 30, 2021
Commitments and Contingencies Disclosure [Abstract]  
Contingencies Contingencies Legal Matters From time to time, the Company may become subject to legal proceedings, claims or litigation arising in the ordinary course of business. In addition, the Company may receive notices alleging infringement of patents or other intellectual property rights. If an unfavorable outcome were to occur in litigation, the impact could be material to the Company’s business, financial condition, cash flow or results of operations, depending on the specific circumstances of the outcome. The Company accrues for loss contingencies when it is both probable that the Company will incur the loss and when it can reasonably estimate the amount of the loss or range of loss.
v3.21.2
Stock Compensation
6 Months Ended
Jun. 30, 2021
Share-based Payment Arrangement [Abstract]  
Stock Compensation Stock Compensation
Restricted Stock Units (“RSUs”) Activity

A summary of unvested restricted stock unit activity for the six months ended June 30, 2021 is as follows:
Number of
Shares
Weighted-Average Grant Date Fair Value
Balance as of December 31, 202015,152,043 $1.31 
Granted6,247,606 $1.90 
Vested (3,823,580)$1.31 
Forfeited and canceled
(891,337)$1.21 
Balance as of June 30, 202116,684,732 $1.53 

As of June 30, 2021, the Company had $22.8 million of unrecognized compensation cost related to restricted stock units, which is expected to be recognized over a weighted-average period of approximately 2.8 years.

The Company granted approximately 1.1 million performance-based RSUs ("PSUs") to certain employees during the first quarter of 2021. The number of shares that will eventually vest depends on achievement of the performance target for 2021, as determined by the Compensation and Talent Committee of the Company's board of directors, and may range from 0% to 125% of the award amount. Once performance is determined, one third of the PSUs, if any, will vest one year after the grant date, and the remainder will vest in eight quarterly installments thereafter, subject to recipients' continued service. For the three and six months ended June 30, 2021, the Company recognized compensation expense of approximately $0.3 million and $0.4 million, respectively, related to PSUs.

Stock Option Activity
A summary of stock option activity for the six months ended June 30, 2021 is as follows: 
Options
Outstanding
Weighted-
Average
Exercise
Price
Aggregate
Intrinsic
Value (in thousands)
Balance as of December 31, 20205,987,243 $1.82 $568 
Granted300,000 $1.79 
Exercised(177,527)$1.29 
Forfeited and canceled(98,452)$1.76 
Balance as of June 30, 20216,011,264 $1.84 $6,685 

The weighted-average grant-date fair value of stock options granted during the six months ended June 30, 2021 and 2020 was $1.19 and $0.75, respectively.

The fair value of each option grant was estimated on the date of grant using the Black-Scholes option-valuation model with the following assumptions:
 Six Months Ended June 30,
20212020
Volatility76%73%
Expected life (in years)6.16.1
Risk-free interest rate1.11%
0.84% - 1.47%
Dividend yield—%—%

As of June 30, 2021, the Company had $2.5 million of unrecognized compensation cost related to non-vested stock options, which is expected to be recognized over a weighted-average period of approximately 2.7 years.    
Employee Stock Purchase Plan
The Company used the following Black-Scholes assumptions in estimating the fair value of the shares under the 2014 Employee Stock Purchase Plan (the “ESPP”):
Six Months Ended June 30,
20212020
Volatility71%71%
Expected life equals length of offering period (in years)0.50.5
Risk-free interest rate0.07%0.95%
Dividend yield—%—%

Stock-based compensation expense related to the ESPP was immaterial for the three and six months ended June 30, 2021 and 2020. As of June 30, 2021, the unrecognized stock-based compensation expense related to the ESPP was also immaterial, and is expected to be recognized over the remaining term of the current offering period.
v3.21.2
Income Taxes
6 Months Ended
Jun. 30, 2021
Income Tax Disclosure [Abstract]  
Income Taxes Income Taxes The effective tax rate for the three and six months ended June 30, 2021 and 2020 was zero percent, primarily as a result of the estimated tax loss for the year and the change in valuation allowance. At June 30, 2021, all unrecognized tax benefits are subject to a full valuation allowance and, if recognized, will not affect the effective tax rate.
v3.21.2
Net Loss per Share
6 Months Ended
Jun. 30, 2021
Earnings Per Share [Abstract]  
Net Loss per Share Net Loss per Share
Basic net loss per share is computed by dividing the net loss by the weighted-average number of shares of common stock outstanding during the period. Diluted net loss per share is computed by giving effect to all potential shares of common stock, including outstanding stock options and warrants, to the extent dilutive. Basic and diluted net loss per share was the same for each period presented as the inclusion of all potential shares of common stock outstanding would have been anti-dilutive.
Net loss is allocated based on the contractual participation rights of the Class A and Class B common stock as if the earnings for the year have been distributed. As the liquidation and dividend rights are identical, the net loss is allocated on a proportionate basis.

The following table presents the calculation of basic and diluted net loss per share for the Company’s common stock (in thousands, except per share data):

 Three Months Ended June 30,Six Months Ended June 30,
 2021202020212020
Class AClass BClass AClass BClass AClass BClass AClass B
Net loss$(427)$(1,962)$(981)$(3,223)$(1,046)$(4,339)$(14,188)$(46,351)
Weighted-average shares used to compute basic and diluted net loss per share
28,397 130,554 35,030 115,048 30,658 127,214 35,031 114,444 
Basic and diluted net loss per share
$(0.02)$(0.02)$(0.03)$(0.03)$(0.03)$(0.03)$(0.41)$(0.41)

The following securities were excluded from the calculation of diluted net loss per share for common stock because their effect would have been anti-dilutive for the periods presented (in thousands):

 Three Months Ended June 30,Six Months Ended June 30,
 2021202020212020
Stock options and RSUs
22,696 24,312 22,696 24,312 
Shares issuable under the ESPP292 297 292 297 
Warrants115 115 115 115 
Total23,103 24,724 23,103 24,724 
v3.21.2
Restructuring Program
6 Months Ended
Jun. 30, 2021
Restructuring and Related Activities [Abstract]  
Restructuring Program Restructuring Program On May 4, 2020, the Company announced its intent to undertake a program to reduce its workforce as part of the Company’s efforts to respond to the COVID-19 pandemic and ensure longer-term financial stability for the Company in light of the ongoing economic challenges resulting from COVID-19 and its impact on the Company’s business (the “Program”). The Program involved the termination of approximately 60 employees, representing 13% of the Company’s headcount. During the second quarter of 2020, the Company incurred charges of approximately $2.0 million related to employee severance and benefits costs under the Program, all of which are cash expenditures. As of September 30, 2020, all costs were fully paid out.In addition, as part of its cost reductions in light of the COVID-19 pandemic, the Company implemented reductions in base salary for its employees, effective May 16, 2020, consisting of a 30% reduction for the Company’s Chief Executive Officer, 25% reduction for the Company’s Chief Financial Officer, 20% reduction for members of the Company’s executive leadership team, and tiered reductions of 10-15% for other employees with salaries above $100,000, which the Company anticipated would last at least six months, and would be re-evaluated at that time. Members of the Company’s Board of Directors also voluntarily agreed to forego 50% of their cash compensation for the duration of the employee salary reductions. In early November 2020, management, in consultation with the Board of Directors, determined that it would reinstate full salaries for those who were impacted by the salary reduction and restore the Board’s cash compensation to its original levels, effective November 16, 2020.
v3.21.2
Accounting Standards and Significant Accounting Policies (Policies)
6 Months Ended
Jun. 30, 2021
Accounting Policies [Abstract]  
Basis of Presentation and Principles of Consolidation
Basis of Presentation and Principles of Consolidation

The accompanying unaudited condensed consolidated financial statements include Castlight and its wholly-owned subsidiaries. All intercompany balances and transactions have been eliminated in consolidation. The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) and applicable rules and regulations of the Securities and Exchange Commission (“SEC”) regarding interim financial reporting. In the opinion of management, the information herein reflects all adjustments, consisting only of normal recurring adjustments except as otherwise noted, considered necessary for a fair statement of results of operations, financial position, stockholders’ equity and cash flows. The results for the interim periods presented are not necessarily indicative of the results expected for any future period. The following information should be read in conjunction with the audited financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2020. 

Other than as described below, there have been no changes to the Company's significant accounting policies described in the Company's Annual Report that have had a material impact on the Company's consolidated financial statements and related notes.
Use of Estimates
Use of Estimates

The preparation of condensed consolidated financial statements in conformity with GAAP requires the Company to make certain estimates, judgments and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of the date of the financial statements, as well as the reported amounts of revenue and expenses during the reporting period. These estimates include, but are not limited to the determination of:

Variable consideration included in the transaction price of the Company’s contracts with customers;
The standalone selling price of the performance obligations in the Company’s contracts with customers;
Assumptions used in the valuation of certain equity awards;
Assumptions used in the calculation of goodwill impairment, including the forecast of future cash flows and discount rate; and
Assumptions used in the calculation of right-of-use assets ("ROU") and lease liabilities for operating leases, including lease terms and the Company’s incremental borrowing rate.

Actual results could differ from those estimates, and such differences could be material to the Company’s consolidated financial position and results of operations.
Recently Issued Accounting Pronouncements
Recently Issued Accounting Pronouncements

The Company considers the applicability and impact of all ASUs issued by the FASB. The Company determined that the ASUs issued by the FASB during the six months ended June 30, 2021 are either not applicable or are expected to have minimal impact on the Company's condensed consolidated financial results.
v3.21.2
Deferred Costs (Tables)
6 Months Ended
Jun. 30, 2021
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]  
Schedule of Changes in Balance of Total Deferred Commissions and Total Deferred Professional Service Costs
Changes in the balance of total deferred commissions and total deferred professional service costs during the six months ended June 30, 2021 are as follows (in thousands):
As of December 31, 2020AdditionsAdjustment to prior year additionsExpense recognizedAs of June 30, 2021
Deferred commissions$9,556 $394 $(201)$(2,568)$7,181 
Deferred professional service costs4,462 559 — (1,147)3,874 
Total deferred commissions and professional service costs
$14,018 $953 $(201)$(3,715)$11,055 
v3.21.2
Goodwill and Intangible Assets (Tables)
6 Months Ended
Jun. 30, 2021
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Finite-Lived Intangible Assets
The following tables set forth the fair value components of identifiable acquired intangible assets (dollars in thousands):
As of June 30, 2021
Useful LifeGrossAccumulated AmortizationNet
Customer relationships6$10,900 $(6,676)$4,224 
Developed technology510,600 (9,010)1,590 
Total identifiable intangible assets$21,500 $(15,686)$5,814 
As of December 31, 2020
Useful LifeGrossAccumulated AmortizationNet
Customer relationships6$10,900 $(5,620)$5,280 
Developed technology510,600 (7,950)2,650 
Total identifiable intangible assets$21,500 $(13,570)$7,930 
Schedule of Amortization Expense for Acquired Intangible Assets Future estimated amortization expense for acquired intangible assets is as follows (in thousands):
Remainder of 2021$2,116 
20222,642 
20231,056 
Total estimated amortization expense$5,814 
v3.21.2
Property and Equipment (Tables)
6 Months Ended
Jun. 30, 2021
Property, Plant and Equipment [Abstract]  
Property and Equipment Property and equipment consisted of the following (in thousands):
As of
 June 30, 2021December 31, 2020
Leasehold improvements$4,606 $4,606 
Computer equipment8,034 7,655 
Software844 908 
Internal-use software3,878 3,878 
Furniture and equipment1,492 1,492 
Construction in progress31 128 
Total18,885 18,667 
Accumulated depreciation/amortization(14,400)(13,346)
Property and equipment, net$4,485 $5,321 
v3.21.2
Stock Compensation (Tables)
6 Months Ended
Jun. 30, 2021
Share-based Payment Arrangement [Abstract]  
Summary of Unvested Restricted Stock Unit Activity
A summary of unvested restricted stock unit activity for the six months ended June 30, 2021 is as follows:
Number of
Shares
Weighted-Average Grant Date Fair Value
Balance as of December 31, 202015,152,043 $1.31 
Granted6,247,606 $1.90 
Vested (3,823,580)$1.31 
Forfeited and canceled
(891,337)$1.21 
Balance as of June 30, 202116,684,732 $1.53 
Summary of Stock Option Activity A summary of stock option activity for the six months ended June 30, 2021 is as follows: 
Options
Outstanding
Weighted-
Average
Exercise
Price
Aggregate
Intrinsic
Value (in thousands)
Balance as of December 31, 20205,987,243 $1.82 $568 
Granted300,000 $1.79 
Exercised(177,527)$1.29 
Forfeited and canceled(98,452)$1.76 
Balance as of June 30, 20216,011,264 $1.84 $6,685 
Schedule Fair Value Assumptions
The fair value of each option grant was estimated on the date of grant using the Black-Scholes option-valuation model with the following assumptions:
 Six Months Ended June 30,
20212020
Volatility76%73%
Expected life (in years)6.16.1
Risk-free interest rate1.11%
0.84% - 1.47%
Dividend yield—%—%
The Company used the following Black-Scholes assumptions in estimating the fair value of the shares under the 2014 Employee Stock Purchase Plan (the “ESPP”):
Six Months Ended June 30,
20212020
Volatility71%71%
Expected life equals length of offering period (in years)0.50.5
Risk-free interest rate0.07%0.95%
Dividend yield—%—%
v3.21.2
Net Loss per Share (Tables)
6 Months Ended
Jun. 30, 2021
Earnings Per Share [Abstract]  
Schedule of Calculation of Basic and Diluted Earnings per Share
The following table presents the calculation of basic and diluted net loss per share for the Company’s common stock (in thousands, except per share data):

 Three Months Ended June 30,Six Months Ended June 30,
 2021202020212020
Class AClass BClass AClass BClass AClass BClass AClass B
Net loss$(427)$(1,962)$(981)$(3,223)$(1,046)$(4,339)$(14,188)$(46,351)
Weighted-average shares used to compute basic and diluted net loss per share
28,397 130,554 35,030 115,048 30,658 127,214 35,031 114,444 
Basic and diluted net loss per share
$(0.02)$(0.02)$(0.03)$(0.03)$(0.03)$(0.03)$(0.41)$(0.41)
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share
The following securities were excluded from the calculation of diluted net loss per share for common stock because their effect would have been anti-dilutive for the periods presented (in thousands):

 Three Months Ended June 30,Six Months Ended June 30,
 2021202020212020
Stock options and RSUs
22,696 24,312 22,696 24,312 
Shares issuable under the ESPP292 297 292 297 
Warrants115 115 115 115 
Total23,103 24,724 23,103 24,724 
v3.21.2
Accounting Standards and Significant Accounting Policies - Concentrations of Risk and Significant Customers (Details) - Customer Concentration Risk
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2021
Anthem | Total Revenue    
Concentration Risk [Line Items]    
Concentration risk, percentage 49.00% 49.00%
Anthem | Accounts Receivable    
Concentration Risk [Line Items]    
Concentration risk, percentage   11.00%
One customer | Total Revenue    
Concentration Risk [Line Items]    
Concentration risk, percentage 11.00%  
One customer | Accounts Receivable    
Concentration Risk [Line Items]    
Concentration risk, percentage   19.00%
Two Customer | Accounts Receivable    
Concentration Risk [Line Items]    
Concentration risk, percentage   14.00%
Three Customer | Accounts Receivable    
Concentration Risk [Line Items]    
Concentration risk, percentage   12.00%
v3.21.2
Revenue, Deferred Revenue, Contract Balances and Performance Obligations - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
Revenue from Contract with Customer [Abstract]          
Deferred revenue $ 10.1   $ 10.1   $ 7.5
Contract with customer, asset, net 5.9   5.9   $ 9.4
Contract with customer liability, revenue recognized 6.8 $ 6.6 6.7 $ 8.8  
Contract with customer, liability, cumulative catch-up adjustment to revenue, change in estimate of transaction price $ 0.2 $ 0.4 $ 1.4 $ 2.1  
v3.21.2
Revenue, Deferred Revenue, Contract Balances and Performance Obligations - Performance Obligations (Details)
$ in Millions
Jun. 30, 2021
USD ($)
Revenue from Contract with Customer [Abstract]  
Revenue, remaining performance obligation $ 118.4
Revenue, remaining performance obligation, percent 90.00%
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-07-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, expected timing of satisfaction, period 12 months
v3.21.2
Deferred Costs (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Capitalized Contract Cost [Roll Forward]        
As of December 31, 2020     $ 14,018  
Additions     953  
Adjustment to prior year additions     (201)  
Expense recognized     (3,715)  
As of June 30, 2021 $ 11,055   11,055  
Impairment charges 200 $ 200 500 $ 1,300
Impairment charges 200 $ 200 500 $ 1,300
Deferred commissions        
Capitalized Contract Cost [Roll Forward]        
As of December 31, 2020     9,556  
Additions     394  
Adjustment to prior year additions     (201)  
Expense recognized     (2,568)  
As of June 30, 2021 7,181   7,181  
Deferred professional service costs        
Capitalized Contract Cost [Roll Forward]        
As of December 31, 2020     4,462  
Additions     559  
Adjustment to prior year additions     0  
Expense recognized     (1,147)  
As of June 30, 2021 $ 3,874   $ 3,874  
v3.21.2
Goodwill and Intangible Assets - Narrative (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Mar. 31, 2020
Jun. 30, 2021
Jun. 30, 2020
Goodwill and Intangible Assets Disclosure [Abstract]          
Long-lived asset impairment     $ 0    
Goodwill impairment $ 0 $ 0 $ 50,300,000 $ 0 $ 50,300,000
Gross goodwill 91,800,000     91,800,000  
Accumulated goodwill impairment 50,300,000     50,300,000  
Amortization expense $ 1,100,000 $ 1,100,000   $ 2,100,000 $ 2,100,000
v3.21.2
Goodwill and Intangible Assets - Schedule of Finite-Lived Intangible Assets (Details) - USD ($)
$ in Thousands
6 Months Ended 12 Months Ended
Jun. 30, 2021
Dec. 31, 2020
Finite-lived Intangible Assets [Roll Forward]    
Gross $ 21,500 $ 21,500
Accumulated Amortization (15,686) (13,570)
Total estimated amortization expense $ 5,814 $ 7,930
Customer relationships    
Finite-Lived Intangible Assets [Line Items]    
Useful Life 6 years 6 years
Finite-lived Intangible Assets [Roll Forward]    
Gross $ 10,900 $ 10,900
Accumulated Amortization (6,676) (5,620)
Total estimated amortization expense $ 4,224 $ 5,280
Developed technology    
Finite-Lived Intangible Assets [Line Items]    
Useful Life 5 years 5 years
Finite-lived Intangible Assets [Roll Forward]    
Gross $ 10,600 $ 10,600
Accumulated Amortization (9,010) (7,950)
Total estimated amortization expense $ 1,590 $ 2,650
v3.21.2
Goodwill and Intangible Assets - Schedule of Amortization Expense for Acquired Intangible Assets (Details) - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]    
Remainder of 2021 $ 2,116  
2022 2,642  
2023 1,056  
Total estimated amortization expense $ 5,814 $ 7,930
v3.21.2
Property and Equipment - Schedule of Property, Plant and Equipment (Details) - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
Property, Plant and Equipment [Line Items]    
Property and equipment $ 18,885 $ 18,667
Accumulated depreciation/amortization (14,400) (13,346)
Property and equipment, net 4,485 5,321
Leasehold improvements    
Property, Plant and Equipment [Line Items]    
Property and equipment 4,606 4,606
Computer equipment    
Property, Plant and Equipment [Line Items]    
Property and equipment 8,034 7,655
Software    
Property, Plant and Equipment [Line Items]    
Property and equipment 844 908
Internal-use software    
Property, Plant and Equipment [Line Items]    
Property and equipment 3,878 3,878
Furniture and equipment    
Property, Plant and Equipment [Line Items]    
Property and equipment 1,492 1,492
Construction in progress    
Property, Plant and Equipment [Line Items]    
Property and equipment $ 31 $ 128
v3.21.2
Property and Equipment - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Property, Plant and Equipment [Abstract]        
Depreciation expense $ 0.6 $ 0.6 $ 1.1 $ 1.0
v3.21.2
Debt - Narrative (Details) - USD ($)
6 Months Ended
May 05, 2020
Jun. 30, 2021
Line of Credit Facility [Line Items]    
Term Loan   $ 5,600,000
Early repayment of senior debt   500,000
Early repayment of senior debt   500,000
Line of Credit | Revolving credit    
Line of Credit Facility [Line Items]    
Line of credit facility, maximum borrowing capacity $ 25,000,000.0  
Borrowings   $ 0
Interest Rate Option A    
Line of Credit Facility [Line Items]    
Spread on variable rate   1.00%
Interest Rate Option B    
Line of Credit Facility [Line Items]    
Debt instrument, interest rate, stated percentage   0.00%
Prime rate | Line of Credit | Revolving credit    
Line of Credit Facility [Line Items]    
Spread on variable rate 1.00%  
v3.21.2
Stock Compensation - Summary of Unvested Restricted Stock Unit Activity (Details) - RSUs
6 Months Ended
Jun. 30, 2021
$ / shares
shares
Number of Shares  
Balance as of beginning of period (in shares) | shares 15,152,043
Granted (in shares) | shares 6,247,606
Vested (in shares) | shares (3,823,580)
Forfeited and canceled (in shares) | shares (891,337)
Balance as of end of period (in shares) | shares 16,684,732
Weighted-Average Grant Date Fair Value  
Balance as of beginning of period (in usd per share) | $ / shares $ 1.31
Granted (in usd per share) | $ / shares 1.90
Vested (in usd per share) | $ / shares 1.31
Forfeited and canceled (in usd per share) | $ / shares 1.21
Balance as of end of period (in usd per share) | $ / shares $ 1.53
v3.21.2
Stock Compensation - Narrative (Details)
$ / shares in Units, $ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2021
USD ($)
Mar. 31, 2021
shares
Jun. 30, 2020
USD ($)
Jun. 30, 2021
USD ($)
quarter
$ / shares
shares
Jun. 30, 2020
USD ($)
$ / shares
RSUs          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Unrecognized compensation cost $ 22.8     $ 22.8  
Weighted-average period expected for cost recognition       2 years 9 months 18 days  
Granted (in shares) | shares       6,247,606  
Weighted-average grant-date fair value (in usd per share) | $ / shares       $ 1.90  
PSUs          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Granted (in shares) | shares   1,100,000      
Stock-based compensation expense 0.3     $ 0.4  
PSUs | Year one          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Awards granted vesting percentage       33.333%  
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period       1 year  
PSUs | Eight quarterly installments          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Awards granted vesting percentage       66.667%  
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period, Number of Fiscal Quarters | quarter       8  
PSUs | Minimum          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Awards granted vesting achievement of the performance target percent       0.00%  
PSUs | Maximum          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Awards granted vesting achievement of the performance target percent       125.00%  
Stock options          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Weighted-average period expected for cost recognition       2 years 8 months 12 days  
Weighted-average grant-date fair value (in usd per share) | $ / shares       $ 1.19 $ 0.75
Unrecognized compensation cost 2.5     $ 2.5  
ESPP          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Unrecognized compensation cost     $ 0.0   $ 0.0
Stock-based compensation expense $ 0.0   $ 0.0 $ 0.0 $ 0.0