Retirement Plans and Other Postretirement Benefits - Summary of Retirement Plans and Other Postretirement Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Change in plan assets:
Fair value of plan assets at beginning of year	$ 49,399
Fair value of plan assets at end of year	54,348	$ 49,399
Retirement Plans [Member]
Change in benefit obligation:
Benefit obligation at beginning of year	47,279	57,698
Service cost	532	558	$ 567
Interest cost	2,365	1,573	1,431
Actuarial gain (loss)	1,436	(9,776)
Benefits paid	(2,835)	(2,774)
Benefit obligation at end of year	48,777	47,279	57,698
Change in plan assets:
Fair value of plan assets at beginning of year	49,399	60,479
Actual return (loss) on plan assets	7,627	(8,463)
Benefits paid	(2,835)	(2,774)
Employer contribution and non-qualified benefit payments	157	157
Fair value of plan assets at end of year	54,348	49,399	60,479
Funded status	5,571	2,120
Unrecognized net actuarial loss (gain)	15,715	19,851
Net amount recognized	21,286	21,971
Other Post Retirement Benefits [Member]
Change in benefit obligation:
Benefit obligation at beginning of year	2,524	3,536
Service cost	76	123	143
Interest cost	129	96	85
Actuarial gain (loss)	(427)	(1,136)
Benefits paid	(93)	(95)
Benefit obligation at end of year	2,209	2,524	3,536
Change in plan assets:
Fair value of plan assets at beginning of year	0	0
Actual return (loss) on plan assets	0	0
Benefits paid	(93)	(95)
Employer contribution and non-qualified benefit payments	93	95
Fair value of plan assets at end of year	0	0	$ 0
Funded status	(2,209)	(2,524)
Unrecognized net actuarial loss (gain)	(784)	(371)
Net amount recognized	$ (2,993)	$ (2,895)