Retirement Plans Retirement Plans, Fair Value Reconciliation of Level 3 Retirement Account Plan Investments (Details) - RAP - Group annuity contracts - Fair Value, Inputs, Level 3 - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward]
Fair value of group annuity contract at beginning of period	$ 40,939	$ 49,213
Return on plan assets	5,313	(5,671)
Defined Benefit Plan, Plan Assets Level 3 Reconciliation, Decrease for Settlement	(2,565)	(2,604)
Fair value of group annuity contract at end of period	$ 43,687	$ 40,939