Qualified Employee Benefit Plans - Net Expense Under the Retirement Plan (Details) - Retirement Plan - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Interest cost on projected benefit obligations	$ 284	$ 5,025	$ 5,199
Expected return on plan assets	(267)	(5,056)	(4,776)
Amortization of prior service cost	611	24	24
Settlement loss recognized	17,733	13,104	0
Recognized actuarial loss	0	666	952
Net pension expense	$ 18,361	$ 13,763	$ 1,399