Goodwill and Other Intangible Assets (Schedule of Changes in Intangible Assets and Goodwill) (Details) - USD ($) $ in Thousands		12 Months Ended
	Nov. 20, 2019	Dec. 31, 2020	Dec. 31, 2019
Finite-lived Intangible Assets [Roll Forward]
Beginning balance		$ 52,892	$ 49,206
Other Changes		329	9,973
Amortization	$ (10,300)	(7,259)	(6,309)
Currency Translation		907	22
Ending balance		46,869	52,892
Beginning balance		180,934	164,382
Other Changes		335	17,343
Amortization		0	0
Currency Translation		6,284	(791)
Ending balance		187,553	180,934
Trade Names
Finite-lived Intangible Assets [Roll Forward]
Beginning balance		73	11
Other Changes		0	68
Amortization		(16)	(6)
Currency Translation		0	0
Ending balance		$ 57	$ 73
Trade Names | Minimum
Finite-lived Intangible Assets [Roll Forward]
Amortization life in years		6 years	6 years
Trade Names | Maximum
Finite-lived Intangible Assets [Roll Forward]
Amortization life in years		15 years	15 years
Developed Technology Rights
Finite-lived Intangible Assets [Roll Forward]
Beginning balance		$ 5,804	$ 56
Other Changes		0	5,821
Amortization		(670)	(73)
Currency Translation		610	0
Ending balance		$ 5,744	$ 5,804
Developed Technology Rights | Minimum
Finite-lived Intangible Assets [Roll Forward]
Amortization life in years		10 years	10 years
Developed Technology Rights | Maximum
Finite-lived Intangible Assets [Roll Forward]
Amortization life in years		15 years	15 years
Intellectual Property
Finite-lived Intangible Assets [Roll Forward]
Amortization life in years		15 years	15 years
Beginning balance		$ 1,243	$ 0
Other Changes		0	1,250
Amortization		(83)	(7)
Currency Translation		0	0
Ending balance		$ 1,160	$ 1,243
Customer Contracts
Finite-lived Intangible Assets [Roll Forward]
Amortization life in years		6 years	6 years
Beginning balance		$ 6,544	$ 9,456
Other Changes		0	0
Amortization		(2,912)	(2,912)
Currency Translation		0	0
Ending balance		3,632	6,544
Customer Relationships
Finite-lived Intangible Assets [Roll Forward]
Beginning balance		39,147	39,538
Other Changes		329	2,834
Amortization		(3,513)	(3,247)
Currency Translation		297	22
Ending balance		$ 36,260	$ 39,147
Customer Relationships | Minimum
Finite-lived Intangible Assets [Roll Forward]
Amortization life in years		8 years	8 years
Customer Relationships | Maximum
Finite-lived Intangible Assets [Roll Forward]
Amortization life in years		15 years	15 years
Other Intangible Assets
Finite-lived Intangible Assets [Roll Forward]
Amortization life in years		5 years	5 years
Beginning balance		$ 81	$ 145
Other Changes		0	0
Amortization		(65)	(64)
Currency Translation		0	0
Ending balance		16	81
MC Goodwill
Finite-lived Intangible Assets [Roll Forward]
Beginning balance		67,672	68,652
Other Changes		0	0
Amortization		0	0
Currency Translation		4,618	(980)
Ending balance		72,290	67,672
AEC Goodwill
Finite-lived Intangible Assets [Roll Forward]
Beginning balance		113,262	95,730
Other Changes		335	17,343
Amortization		0	0
Currency Translation		1,666	189
Ending balance		$ 115,263	$ 113,262