Qualified Employee Benefit Plans - Net (Benefit) Expense Under the Retirement Plan (Details) - Retirement Plan - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Interest cost on projected benefit obligations	$ 5,025	$ 5,199	$ 3,958
Expected return on plan assets	(5,056)	(4,776)	(6,591)
Amortization of prior service cost	24	24	24
Settlement loss recognized	13,104	0	1,678
Recognized actuarial loss	666	952	1,042
Net pension expense	$ 13,763	$ 1,399	$ 111