Employee Benefit Plans (Benefit Obligations in Excess of the Fair Value of Plan's Assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Employee Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	$ 79,058	$ 101,526	$ 107,824
Accumulated benefit obligation	79,058	101,526
Fair value of plans' assets	56,157	73,375	$ 71,940
Projected benefit obligation greater than fair value of plans' assets	22,901	28,151
Accumulated benefit obligation greater than fair value of plans' assets	22,901	28,151
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	76,729	98,570
Accumulated benefit obligation	76,729	98,570
Fair value of plans' assets	56,157	73,375
Projected benefit obligation greater than fair value of plans' assets	20,572	25,195
Accumulated benefit obligation greater than fair value of plans' assets	20,572	25,195
Benefit Equalization Plan
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	2,329	2,956
Accumulated benefit obligation	2,329	2,956
Fair value of plans' assets	0	0
Projected benefit obligation greater than fair value of plans' assets	2,329	2,956
Accumulated benefit obligation greater than fair value of plans' assets	$ 2,329	$ 2,956