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, 2022	Dec. 31, 2021
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	$ 49,213	$ 50,866
Return on plan assets	(5,671)	921
Defined Benefit Plan, Plan Assets Level 3 Reconciliation, Decrease for Settlement	(2,604)	(2,640)
Fair value of group annuity contract at end of period	40,939	49,213
Transfers from money market funds and equity securities	$ 0	$ 66