Pension and Retirement Plans - Schedule of Projected Benefit Obligations and Funded Status (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Pension Plan
Change in projected benefit obligation
Obligation at beginning of year	$ 50,117	$ 45,401
Interest cost	1,211	1,438
Actuarial (gain) loss	(1,838)	4,827
Benefits paid	(1,615)	(1,549)
Obligation at end of year	47,875	50,117
Change in plan assets
Fair value at beginning of year	55,802	50,131
Actual return on plan assets	6,451	7,220
Benefits paid	(1,615)	(1,549)
Fair value at end of year	60,638	55,802
Funded (underfunded) status at end of year	12,763	5,685
Supplemental Retirement Plan
Change in projected benefit obligation
Obligation at beginning of year	10,505	9,622
Service cost	400	355
Interest cost	223	283
Actuarial (gain) loss	(451)	840
Benefits paid	(602)	(595)
Obligation at end of year	10,075	10,505
Change in plan assets
Employer contribution	602	595
Benefits paid	(602)	(595)
Funded (underfunded) status at end of year	(10,075)	(10,505)
Postretirement Healthcare Plan
Change in projected benefit obligation
Obligation at beginning of year	761	689
Service cost	31	30
Interest cost	18	21
Actuarial (gain) loss	(62)	51
Benefits paid	(19)	(30)
Obligation at end of year	729	761
Change in plan assets
Employer contribution	19	30
Benefits paid	(19)	(30)
Funded (underfunded) status at end of year	$ (729)	$ (761)