Pensions and Other Postretirement Benefits (Fair Value of Plan Assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Defined benefit pension plan assets	$ 16,248	$ 19,717
Level 1 Inputs
Defined Benefit Plan Disclosure [Line Items]
Defined benefit pension plan assets	1,511	1,577
Level 2 Inputs
Defined Benefit Plan Disclosure [Line Items]
Defined benefit pension plan assets	14,737	18,140
Level 3 Inputs
Defined Benefit Plan Disclosure [Line Items]
Defined benefit pension plan assets	0	0
Equity securities
Defined Benefit Plan Disclosure [Line Items]
Defined benefit pension plan assets	7,736	9,262
Equity securities | Level 1 Inputs
Defined Benefit Plan Disclosure [Line Items]
Defined benefit pension plan assets	0	0
Equity securities | Level 2 Inputs
Defined Benefit Plan Disclosure [Line Items]
Defined benefit pension plan assets	7,736	9,262
Equity securities | Level 3 Inputs
Defined Benefit Plan Disclosure [Line Items]
Defined benefit pension plan assets	0	0
Fixed income securities
Defined Benefit Plan Disclosure [Line Items]
Defined benefit pension plan assets	6,813	7,646
Fixed income securities | Level 1 Inputs
Defined Benefit Plan Disclosure [Line Items]
Defined benefit pension plan assets	0	0
Fixed income securities | Level 2 Inputs
Defined Benefit Plan Disclosure [Line Items]
Defined benefit pension plan assets	6,813	7,646
Fixed income securities | Level 3 Inputs
Defined Benefit Plan Disclosure [Line Items]
Defined benefit pension plan assets	0	0
Cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Defined benefit pension plan assets	1,699	2,809
Cash and cash equivalents | Level 1 Inputs
Defined Benefit Plan Disclosure [Line Items]
Defined benefit pension plan assets	1,511	1,577
Cash and cash equivalents | Level 2 Inputs
Defined Benefit Plan Disclosure [Line Items]
Defined benefit pension plan assets	188	1,232
Cash and cash equivalents | Level 3 Inputs
Defined Benefit Plan Disclosure [Line Items]
Defined benefit pension plan assets	$ 0	$ 0