Pensions and Other Postretirement Benefits (Reconciliation of The Benefit Obligation, Plan Assets and Funded Status) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Change in plan assets:
Fair value of plan assets at beginning of year	$ 18,157
Fair value of plan assets at end of year	19,717	$ 18,157
Pension Plans | United States
Change in benefit obligation:
Benefit obligation at beginning of year	2,747	2,414
Service cost (adjusted for actual employee contributions)	0	0	$ 0
Interest cost	57	70	85
Contributions by participants	0	0	0
Actuarial (gains) losses	(103)	338
Benefits paid	(75)	(75)
Curtailments and settlements	0	0
Plan amendments and other	0	0
Currency translation	0	0
Benefit obligation at end of year	2,626	2,747	2,414
Change in plan assets:
Fair value of plan assets at beginning of year	0	0
Actual return on plan assets	0	0
Company contributions	75	75
Benefits paid	(75)	(75)
Currency translation	0	0
Fair value of plan assets at end of year	0	0	0
Funded status at end of year	(2,626)	(2,747)
Pension Plans | Foreign Plan
Change in benefit obligation:
Benefit obligation at beginning of year	28,088	24,857
Service cost (adjusted for actual employee contributions)	379	402	336
Interest cost	353	442	535
Contributions by participants	0	0	0
Actuarial (gains) losses	(792)	1,863
Benefits paid	(851)	(659)
Curtailments and settlements	(108)	(95)
Plan amendments and other	(172)	0
Currency translation	(740)	1,278
Benefit obligation at end of year	26,157	28,088	24,857
Change in plan assets:
Fair value of plan assets at beginning of year	18,157	16,420
Actual return on plan assets	1,044	734
Company contributions	1,613	919
Benefits paid	(851)	(659)
Currency translation	(246)	743
Fair value of plan assets at end of year	19,717	18,157	16,420
Funded status at end of year	(6,440)	(9,931)
OPEB Plans
Change in benefit obligation:
Benefit obligation at beginning of year	3,577	4,633
Service cost (adjusted for actual employee contributions)	36	123	126
Interest cost	68	133	180
Contributions by participants	0	25
Actuarial (gains) losses	(591)	(1,498)
Benefits paid	(205)	(249)
Plan amendments and other	0	410
Benefit obligation at end of year	2,885	3,577	4,633
Change in plan assets:
Fair value of plan assets at beginning of year	0	0
Company contributions	205	224
Contributions by participants	0	25
Benefits paid	(205)	(249)
Fair value of plan assets at end of year	0	0	$ 0
Funded status at end of year	$ (2,885)	$ (3,577)