Document And Entity Information	12 Months Ended
Document And Entity Information	Dec. 31, 2025
Document And Entity Information [Abstract]
Document Type	DEF 14A
Entity Registrant Name	FRANKLIN FINANCIAL SERVICES CORPORATION
Entity Central Index Key	0000723646
Amendment Flag	false

Pay vs Performance Disclosure - USD ($)

12 Months Ended

Dec. 31, 2025

Dec. 31, 2024

Dec. 31, 2023

Pay vs Performance Disclosure [Line Items]

Pay vs Performance [Table Text Block]


	CEO: Craig W. Best		CEO: Timothy G. Henry
	Summary Compensation Total for PEO	Compensation Actually Paid to PEO	Summary Compensation Total for PEO	Compensation Actually Paid to PEO	Average Summary Compensation Total for Other NEOs	Average Summary Compensation Actually Paid for Other NEOs	Value of Initial Fixed $100 Investment Based On Total Shareholder Return	Net Income
	(1)	(2)	(1)	(2)	(3)	(4)	(5)	(6)
Year	$	$	$	$	$	$	$	$ 000's
2025	788,859	801,834	311,266	339,593	481,601	515,741	156.26	21,226
2024	-	-	762,401	738,618	452,147	439,964	102.17	11,099
2022	-	-	766,220	725,355	424,903	393,257	103.53	13,598

(1) Compensation as reported in the Summary Compensation Table for the PEO Timothy G. Henry and Craig W. Best, for the years indicated.Mr. Henry retired from the Corporation on May 2, 2025.

(2) Compensation actually paid to the PEO calculated each year and reflects the respective amounts set forth in column (1) of the table above, adjusted as set forth in the table below, as determined in accordance with SEC rules.

(3) The average of the total compensation reported in the Summary Compensation Table for the Other NEOs. Included in the average figures shown for 2025, 2024 and 2023 are Messrs. Hollar and Carroll.

(4) Average compensation actually paid to the Other NEOs for each year reflects the respective amounts set forth in column (3) of the table above, adjusted as set forth in the table below, as determined in accordance with SEC rules.

(5) Total shareholder return shows the value at each year-end assuming the investment of $100 on the last day December 31, 2022 and the reinvestment of all dividends during the years.

(6) Net income of the Corporation for the reported year.

‎

Named Executive Officers, Footnote [Text Block]

Compensation as reported in the Summary Compensation Table for the PEO Timothy G. Henry and Craig W. Best, for the years indicated.Mr. Henry retired from the Corporation on May 2, 2025.

PEO Total Compensation Amount

$ 762,401

$ 766,220

PEO Actually Paid Compensation Amount

738,618

725,355

Adjustment To PEO Compensation, Footnote [Text Block]

Compensation actually paid to the PEO calculated each year and reflects the respective amounts set forth in column (1) of the table above, adjusted as set forth in the table below, as determined in accordance with SEC rules.

Non-PEO NEO Average Total Compensation Amount

$ 481,601

452,147

424,903

Non-PEO NEO Average Compensation Actually Paid Amount

$ 515,741

439,964

393,257

Adjustment to Non-PEO NEO Compensation Footnote [Text Block]

Average compensation actually paid to the Other NEOs for each year reflects the respective amounts set forth in column (3) of the table above, adjusted as set forth in the table below, as determined in accordance with SEC rules.

Total Shareholder Return Amount

$ 156.26

102.17

103.53

Net Income (Loss) Attributable to Parent

$ 21,226,000

11,099,000

13,598,000

PEO Name

Timothy G. Henry and Craig W. Best

Craig W. Best [Member]

Pay vs Performance Disclosure [Line Items]

PEO Total Compensation Amount

$ 788,859

PEO Actually Paid Compensation Amount

801,834

Timothy G. Henry [Member]

Pay vs Performance Disclosure [Line Items]

PEO Total Compensation Amount

311,266

762,401

766,220

PEO Actually Paid Compensation Amount

339,593

738,618

725,355

Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table | PEO

Pay vs Performance Disclosure [Line Items]

Adjustment to Compensation Amount

(52,240)

(39,000)

Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table | PEO | Craig W. Best [Member]

Pay vs Performance Disclosure [Line Items]

Adjustment to Compensation Amount

(44,610)

Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table | PEO | Timothy G. Henry [Member]

Pay vs Performance Disclosure [Line Items]

Adjustment to Compensation Amount

(65,392)

Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table | Non-PEO NEO

Pay vs Performance Disclosure [Line Items]

Adjustment to Compensation Amount

(30,906)

(33,147)

(12,074)

Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested | PEO

Pay vs Performance Disclosure [Line Items]

Adjustment to Compensation Amount

59,800

37,860

Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested | Non-PEO NEO

Pay vs Performance Disclosure [Line Items]

Adjustment to Compensation Amount

41,164

37,943

11,721

Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year | PEO | Craig W. Best [Member]

Pay vs Performance Disclosure [Line Items]

Adjustment to Compensation Amount

57,585

Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year | PEO | Timothy G. Henry [Member]

Pay vs Performance Disclosure [Line Items]

Adjustment to Compensation Amount

66,711

Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested | PEO

Pay vs Performance Disclosure [Line Items]

Adjustment to Compensation Amount

(24,056)

(34,188)

Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested | Non-PEO NEO

Pay vs Performance Disclosure [Line Items]

Adjustment to Compensation Amount

19,702

(14,938)

(29,792)

Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year | PEO

Pay vs Performance Disclosure [Line Items]

Adjustment to Compensation Amount

(7,287)

(5,537)

Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year | PEO | Timothy G. Henry [Member]

Pay vs Performance Disclosure [Line Items]

Adjustment to Compensation Amount

27,008

Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year | Non-PEO NEO

Pay vs Performance Disclosure [Line Items]

Adjustment to Compensation Amount

$ 4,180

$ (2,041)

$ (1,501)

Award Timing Disclosure	12 Months Ended
Award Timing Disclosure	Dec. 31, 2025
Award Timing Disclosures [Line Items]
Award Timing MNPI Disclosure	While the Corporation does not have a formal written policy in place with regard to the timing of awards of options in relation to the disclosure of material nonpublic information, it does not seek to time equity grants to take advantage of information, either positive or negative, about the Corporation that has not been publicly disclosed. It has been the Corporation’s recent practice to grant most of our equity awards in the form of restricted stock units.
Award Timing MNPI Considered	false

Insider Trading Policies and Procedures	12 Months Ended
Insider Trading Policies and Procedures	Dec. 31, 2025
Insider Trading Policies and Procedures [Line Items]
Insider Trading Policies and Procedures Adopted	true