Employee Benefit Plans - Schedule of Change in Benefit Obligation and Plan Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Pension Plan
Change in benefit obligation:
Benefit obligation, beginning balance	$ 310,416	$ 312,440
Acquired	0	0
Service cost	6,466	8,044	$ 7,985
Interest cost	9,510	7,317	7,608
Actuarial gain	(88,943)	(9,023)
Benefits paid	(15,317)	(8,362)
Benefit obligation, ending balance	222,132	310,416	312,440
Change in plan assets:
Fair value of plan assets, beginning balance	492,132	411,907
Actuarial (loss) return on plan assets	(83,063)	53,587
Employer contributions	10,000	35,000
Benefits paid	(15,317)	(8,362)
Fair value of plan assets, ending balance	403,752	492,132	411,907
Funded status at end of year	181,620	181,716
Pension Plan | Acquired RSI Plan
Change in benefit obligation:
Benefit obligation, beginning balance	0
Acquired	7,202
Service cost	0
Interest cost	198
Actuarial gain	(1,009)
Benefits paid	(129)
Settlements	(205)
Benefit obligation, ending balance	6,057	0
Change in plan assets:
Fair value of plan assets, beginning balance	0
Acquired	7,819
Actuarial (loss) return on plan assets	(424)
Employer contributions	0
Benefits paid	(129)
Settlements	(205)
Fair value of plan assets, ending balance	7,061	0
Funded status at end of year	1,004
RIM Plan
Change in benefit obligation:
Benefit obligation, beginning balance	15,650	16,530
Acquired	0	0
Service cost	372	398	267
Interest cost	389	343	405
Actuarial gain	(3,505)	(1,292)
Benefits paid	(296)	(329)
Benefit obligation, ending balance	12,610	15,650	16,530
Change in plan assets:
Fair value of plan assets, beginning balance	0	0
Actuarial (loss) return on plan assets	0	0
Employer contributions	296	329
Benefits paid	(296)	(329)
Fair value of plan assets, ending balance	0	0	0
Funded status at end of year	(12,610)	(15,650)
Post-retirement Plan
Change in benefit obligation:
Benefit obligation, beginning balance	26,335	30,621
Acquired	0	0
Service cost	346	520	394
Interest cost	600	562	683
Actuarial gain	(6,849)	(4,805)
Benefits paid	(649)	(563)
Benefit obligation, ending balance	19,783	26,335	30,621
Change in plan assets:
Fair value of plan assets, beginning balance	0	0
Actuarial (loss) return on plan assets	0	0
Employer contributions	649	563
Benefits paid	(649)	(563)
Fair value of plan assets, ending balance	0	0	0
Funded status at end of year	(19,783)	(26,335)
Post-retirement Plan | Acquired RSI Plan
Change in benefit obligation:
Benefit obligation, beginning balance	0
Acquired	3,163
Service cost	93
Interest cost	93
Actuarial gain	(1,298)
Benefits paid	(4)
Settlements	0
Benefit obligation, ending balance	2,047	0
Change in plan assets:
Fair value of plan assets, beginning balance	0
Acquired	0
Actuarial (loss) return on plan assets	0
Employer contributions	4
Benefits paid	(4)
Settlements	0
Fair value of plan assets, ending balance	0	0
Funded status at end of year	(2,047)
Split-Dollar Life Insurance
Change in benefit obligation:
Benefit obligation, beginning balance	20,140	19,981
Acquired	1,503	0
Service cost	511	562	467
Interest cost	612	500	507
Actuarial gain	(6,534)	(903)
Benefits paid	(255)	0
Benefit obligation, ending balance	15,977	20,140	19,981
Change in plan assets:
Fair value of plan assets, beginning balance	0	0
Actuarial (loss) return on plan assets	0	0
Employer contributions	255	0
Benefits paid	(255)	0
Fair value of plan assets, ending balance	0	0	$ 0
Funded status at end of year	$ (15,977)	$ (20,140)