Retirement Plans - Schedule of Changes in Benefit Obligations and Plan Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Service cost	$ 0	$ 0	$ 0
Interest cost	25	25	25
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Funded Status at End of Year	412	506
Unrecognized transition obligation	(159)	(234)
Unrecognized net gain	645	668
Amounts recognized in retained earnings	898	940
Change in Benefit Obligation [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit obligation at beginning of year	506	561
Service cost	0	0
Interest cost	25	25
Amendments	0	0
Actuarial gain	(78)	(26)
Net benefits paid	(41)	(54)
Benefit obligation at end of year	412	506	561
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Net benefits paid	(41)	(54)
Change In Plan Assets [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Net benefits paid	(41)	(54)
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year	0	0
Actual return on plan assets	0	0
Employer contributions	41	54
Net benefits paid	(41)	(54)
Fair value of plan assets at end of year	$ 0	$ 0	$ 0