Employee Benefit Plans - Net Periodic Benefit Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
DB Pension Plan
Components of net periodic benefit cost
Service cost	$ 0	$ 0	$ 0
Interest cost	3,188	3,275	1,985
Expected return on plan assets	(5,147)	(4,789)	(5,885)
Amortization of prior service (credit) cost	0	0	0
Recognized net actuarial loss (gain)	0	1,156	1,217
Net periodic benefit (credit) cost	(1,959)	(358)	(2,683)
Other changes in plan assets and benefit obligations recognized in other comprehensive income (loss)
Net actuarial gain	(7,166)	(4,048)	(1,080)
Recognized actuarial (loss) gain	(976)	(1,156)	(1,217)
Recognized prior service cost (credit)	0	0	0
Recognized in other comprehensive loss	(8,142)	(5,204)	(2,297)
Total recognized in net periodic benefit cost and other comprehensive income (loss)	(10,101)	(5,562)	(4,980)
Life and Healthcare Plan
Components of net periodic benefit cost
Service cost	25	33	174
Interest cost	342	354	223
Expected return on plan assets	0	0	0
Amortization of prior service (credit) cost	(42)	(61)	(61)
Recognized net actuarial loss (gain)	0	(40)	196
Net periodic benefit (credit) cost	325	286	532
Other changes in plan assets and benefit obligations recognized in other comprehensive income (loss)
Net actuarial gain	(815)	(153)	(2,598)
Recognized actuarial (loss) gain	61	40	(196)
Recognized prior service cost (credit)	43	61	61
Recognized in other comprehensive loss	(711)	(52)	(2,733)
Total recognized in net periodic benefit cost and other comprehensive income (loss)	(386)	234	(2,201)
SERP Plan
Components of net periodic benefit cost
Service cost	59	43	78
Interest cost	1,130	1,148	814
Expected return on plan assets	0	0	0
Amortization of prior service (credit) cost	226	278	277
Recognized net actuarial loss (gain)	0	0	847
Net periodic benefit (credit) cost	1,415	1,469	2,016
Other changes in plan assets and benefit obligations recognized in other comprehensive income (loss)
Net actuarial gain	(2,259)	(315)	(9,083)
Recognized actuarial (loss) gain	0	0	(847)
Recognized prior service cost (credit)	(226)	(278)	(277)
Recognized in other comprehensive loss	(2,485)	(593)	(10,207)
Total recognized in net periodic benefit cost and other comprehensive income (loss)	$ (1,070)	$ 876	$ (8,191)