Employee Benefit Plans - Schedule of Components of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Unrecognized prior service costs	$ 0	$ 0	$ 0
Unrecognized net actuarial loss (income)	59,463	60,970	38,909
Total accumulated other comprehensive (income) loss	59,463	60,970	38,909
Pension Plan | Acquired RSI Plan
Defined Benefit Plan Disclosure [Line Items]
Unrecognized prior service costs	0	0
Unrecognized net actuarial loss (income)	0	(281)
Total accumulated other comprehensive (income) loss	0	(281)
RIM Plan
Defined Benefit Plan Disclosure [Line Items]
Unrecognized prior service costs	0	0	0
Unrecognized net actuarial loss (income)	2,102	1,781	5,730
Total accumulated other comprehensive (income) loss	2,102	1,781	5,730
Post-retirement Plan
Defined Benefit Plan Disclosure [Line Items]
Unrecognized prior service costs	0	0	0
Unrecognized net actuarial loss (income)	787	(161)	6,999
Total accumulated other comprehensive (income) loss	787	(161)	6,999
Post-retirement Plan | Acquired RSI Plan
Defined Benefit Plan Disclosure [Line Items]
Unrecognized prior service costs	0	0
Unrecognized net actuarial loss (income)	(493)	(868)
Total accumulated other comprehensive (income) loss	(493)	(868)
Split-Dollar Life Insurance
Defined Benefit Plan Disclosure [Line Items]
Unrecognized prior service costs	238	294	350
Unrecognized net actuarial loss (income)	16	(65)	7,071
Total accumulated other comprehensive (income) loss	$ 254	$ 229	$ 7,421