Incentive Compensation Plan (Tables)

12 Months Ended

Dec. 31, 2025

Share-Based Payment Arrangement [Abstract]

Unvested Service-Based Restricted Stock Awards

A summary of the status of First Commonwealth’s unvested service-based restricted stock awards as of December 31 and changes for the years ended on those dates is presented below:

	2025			2024			2023
	Shares	Weighted Average Grant Date Fair Value		Shares	Weighted Average Grant Date Fair Value		Shares	Weighted Average Grant Date Fair Value
Outstanding, beginning of the year	399,497	$	14.68	317,065	$	14.62	311,265	$	14.48
Granted	126,515	16.31		212,572	14.29		106,750	14.32
Vested	(129,925)	15.55		(120,265)	13.83		(90,810)	13.76
Forfeited	(4,000)	14.50		(9,875)	14.87		(10,140)	14.86
Outstanding, end of the year	392,087	14.92		399,497	14.68		317,065	14.62

Schedule of Restricted Stock Units Granted Based on Performance [Table Text Block]

The following provides detail on restricted stock awards estimated to be granted on a performance award basis during 2025, 2024 and 2023. These plans were previously approved by the Board of Directors.

Grant Date	Target Share Award	Performance Period (years)	Award if threshold met		Award if targets are met		Award if superior met		Award if threshold not achieved		Vesting After Performance Period (years)	Final vesting
February 18, 2021	143,400	3	40	%	100	%	200	%	—	%	0	December 31, 2023
February 17, 2022	121,200	3	40	%	100	%	200	%	—	%	0	December 31, 2024
January 23, 2023	159,000	3	40	%	100	%	200	%	—	%	0	December 31, 2025
January 29, 2024	167,800	3	40	%	100	%	200	%	—	%	0	December 31, 2026
January 27, 2025	159,800	3	40	%	100	%	200	%	—	%	0	December 31, 2027

Unvested Target Award

The following table summarizes the estimated unvested target share awards for the Plans as of December 31:

	2025	2024	2023
Outstanding, beginning of the year	475,225	453,714	434,352
Granted	203,523	276,161	162,774
Issued	(155,956)	(215,100)	(143,412)
Forfeited	(34,700)	(39,550)	—
Outstanding, end of the year	488,092	475,225	453,714