Employee Benefit Plans - Schedule of Change in Benefit Obligation and Plan Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Pension Plan
Change in benefit obligation:
Benefit obligation, beginning balance	$ 222,132	$ 310,416
Acquired	0	0
Service cost	4,679	6,466	$ 8,044
Interest cost	11,637	9,510	7,317
Actuarial loss (gain)	22,535	(88,943)
Benefits paid	(10,866)	(15,317)
Impact of plan merger	5,751	0
Benefit obligation, ending balance	255,868	222,132	310,416
Change in plan assets:
Fair value of plan assets, beginning balance	403,752	492,132
Actuarial return (loss) on plan assets	53,391	(83,063)
Employer contributions	0	10,000
Benefits paid	(10,866)	(15,317)
Impact of plan merger	7,282	0
Fair value of plan assets, ending balance	453,559	403,752	492,132
Funded status at end of year	197,691	181,620
Pension Plan | Acquired RSI Plan
Change in benefit obligation:
Benefit obligation, beginning balance	6,057	0
Acquired	0	7,202
Service cost	0	0
Interest cost	305	198
Actuarial loss (gain)	(416)	(1,009)
Benefits paid	(195)	(129)
Settlements	0	(205)
Impact of plan merger	(5,751)	0
Benefit obligation, ending balance	0	6,057	0
Change in plan assets:
Fair value of plan assets, beginning balance	7,061	0
Acquired	0	7,819
Actuarial return (loss) on plan assets	416	(424)
Employer contributions	0	0
Benefits paid	(195)	(129)
Settlements	0	(205)
Impact of plan merger	(7,282)	0
Fair value of plan assets, ending balance	0	7,061	0
Funded status at end of year	0	1,004
RIM Plan
Change in benefit obligation:
Benefit obligation, beginning balance	12,610	15,650
Acquired	0	0
Service cost	277	372	398
Interest cost	632	389	343
Actuarial loss (gain)	377	(3,505)
Benefits paid	(346)	(296)
Impact of plan merger	0	0
Benefit obligation, ending balance	13,550	12,610	15,650
Change in plan assets:
Fair value of plan assets, beginning balance	0	0
Actuarial return (loss) on plan assets	0	0
Employer contributions	346	296
Benefits paid	(346)	(296)
Impact of plan merger	0	0
Fair value of plan assets, ending balance	0	0	0
Funded status at end of year	(13,550)	(12,610)
Post-retirement Plan
Change in benefit obligation:
Benefit obligation, beginning balance	19,783	26,335
Acquired	0	0
Service cost	215	346	520
Interest cost	970	600	562
Actuarial loss (gain)	947	(6,849)
Benefits paid	(767)	(649)
Impact of plan merger	0	0
Benefit obligation, ending balance	21,148	19,783	26,335
Change in plan assets:
Fair value of plan assets, beginning balance	0	0
Actuarial return (loss) on plan assets	0	0
Employer contributions	767	649
Benefits paid	(767)	(649)
Impact of plan merger	0	0
Fair value of plan assets, ending balance	0	0	0
Funded status at end of year	(21,148)	(19,783)
Post-retirement Plan | Acquired RSI Plan
Change in benefit obligation:
Benefit obligation, beginning balance	2,047	0
Acquired	0	3,163
Service cost	67	93
Interest cost	107	93
Actuarial loss (gain)	313	(1,298)
Benefits paid	(31)	(4)
Settlements	0	0
Impact of plan merger	0	0
Benefit obligation, ending balance	2,503	2,047	0
Change in plan assets:
Fair value of plan assets, beginning balance	0	0
Acquired	0	0
Actuarial return (loss) on plan assets	0	0
Employer contributions	31	4
Benefits paid	(31)	(4)
Settlements	0	0
Impact of plan merger	0	0
Fair value of plan assets, ending balance	0	0	0
Funded status at end of year	(2,503)	(2,047)
Split-Dollar Life Insurance
Change in benefit obligation:
Benefit obligation, beginning balance	15,977	20,140
Acquired	0	1,503
Service cost	277	511	562
Interest cost	818	612	500
Actuarial loss (gain)	81	(6,534)
Benefits paid	(196)	(255)
Impact of plan merger	0	0
Benefit obligation, ending balance	16,957	15,977	20,140
Change in plan assets:
Fair value of plan assets, beginning balance	0	0
Actuarial return (loss) on plan assets	0	0
Employer contributions	196	255
Benefits paid	(196)	(255)
Impact of plan merger	0	0
Fair value of plan assets, ending balance	0	0	$ 0
Funded status at end of year	$ (16,957)	$ (15,977)