Intangible Assets - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020
Intangible asset activity
Net balance			$ 36,209
Additions			98
Disposals-Other			(6)
Net foreign currency translation			(509)
Amortization expense	$ (2,360)	$ (2,335)	(7,049)	$ (7,051)
Net balance	28,743		28,743
Intangible assets, net
Balance at cost					$ 95,672
Accumulated amortization					(66,929)
Ending Balance	28,743		36,209		28,743
Impairment charges			0	$ 0
Acquired Technology
Intangible asset activity
Net balance			5,454
Additions			43
Net foreign currency translation			(91)
Amortization expense			(2,576)
Net balance	2,830		2,830
Intangible assets, net
Balance at cost					42,739
Accumulated amortization					(39,909)
Ending Balance	2,830		2,830		2,830
Customer relationships
Intangible asset activity
Net balance			26,884
Net foreign currency translation			(418)
Amortization expense			(2,708)
Net balance	23,758		23,758
Intangible assets, net
Balance at cost					39,207
Accumulated amortization					(15,449)
Ending Balance	23,758		23,758		23,758
Other
Intangible asset activity
Net balance			3,871
Additions			55
Disposals-Other			(6)
Amortization expense			(1,765)
Net balance	2,155		2,155
Intangible assets, net
Balance at cost					13,726
Accumulated amortization					(11,571)
Ending Balance	$ 2,155		$ 2,155		$ 2,155