Goodwill and Other Intangible Assets - Net Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Intangible Assets, Net:
Cost	$ 980,310	$ 900,937
Acquisitions	22,817	12,789
Currency translation	(59,828)	66,584
Accumulated amortization	738,224	755,971
Net Value	205,075	224,339	$ 226,147
Customer relationships
Intangible Assets, Net:
Cost	699,795	645,206
Acquisitions	18,189	12,789
Currency translation	(37,807)	41,800
Accumulated amortization	483,748	481,256
Net Value	196,429	218,539	218,441
Patents
Intangible Assets, Net:
Cost	273,570	249,100
Acquisitions	4,628	0
Currency translation	(21,862)	24,470
Accumulated amortization	252,414	273,426
Net Value	3,922	144	$ 2,228
Other
Intangible Assets, Net:
Cost	6,945	6,631
Acquisitions	0	0
Currency translation	(159)	314
Accumulated amortization	2,062	1,289
Net Value	$ 4,724	$ 5,656