Retirement Plans Retirement Plans, Fair Value Reconciliation of Level 3 Retirement Account Plan Investments (Details) - RAP - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	$ 478,970	$ 453,457
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	517,579	478,970
Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	40,416
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	39,569	40,416
Group Annuity Contracts [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	40,416
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	39,569	40,416
Group Annuity Contracts [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	40,416	43,687
Defined Benefit Plan, Plan Assets Level 3 Reconciliation, Increase (Decrease) for Actual Return (Loss) on Plan Assets Still Held	1,645	(731)
Defined Benefit Plan, Plan Assets Level 3 Reconciliation, Decrease for Settlement	2,492	2,539
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	39,569	40,416
Money Market Funds [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	7,892
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	2,661	7,892
Money Market Funds [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	0
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	$ 0	$ 0