Goodwill and Intangible Assets - Intangible Assets (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount, beginning balance	$ 186,413	$ 68,114
Accumulated Amortization	(46,213)	(37,088)
Accumulated Impairment Loss	(19,258)	(19,258)
Net Carrying Value, excluding foreign currency translation	120,942
Foreign currency translation	7,662
Total intangible assets	$ 128,604	$ 11,768
Trademarks
Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period (in years)		15 years
Gross Carrying Amount, beginning balance		$ 7,100
Accumulated Amortization		(2,045)
Accumulated Impairment Loss		(4,179)
Total intangible assets		$ 876
Existing technology
Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period (in years)	10 years	13 years
Gross Carrying Amount, beginning balance	$ 99,600	$ 12,600
Accumulated Amortization	(10,603)	(5,831)
Accumulated Impairment Loss	(4,328)	(4,328)
Net Carrying Value, excluding foreign currency translation	$ 84,669
Total intangible assets		$ 2,441
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period (in years)	11 years	11 years
Gross Carrying Amount, beginning balance	$ 55,000	$ 33,500
Accumulated Amortization	(20,876)	(18,405)
Accumulated Impairment Loss	(10,751)	(10,751)
Net Carrying Value, excluding foreign currency translation	$ 23,373
Total intangible assets		$ 4,344
Reacquired rights
Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period (in years)		3 years
Gross Carrying Amount, beginning balance		$ 7,500
Accumulated Amortization		(7,059)
Accumulated Impairment Loss		0
Total intangible assets		$ 441
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period (in years)		8 years
Gross Carrying Amount, beginning balance		$ 6,796
Accumulated Amortization		(3,165)
Accumulated Impairment Loss		0
Total intangible assets		$ 3,631
Other
Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period (in years)	5 years	2 years
Gross Carrying Amount, beginning balance	$ 14,913	$ 618
Accumulated Amortization	(11,885)	(583)
Accumulated Impairment Loss	0	0
Net Carrying Value, excluding foreign currency translation	$ 3,028
Total intangible assets		$ 35
Trademarks and Trade Names
Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period (in years)	10 years
Gross Carrying Amount, beginning balance	$ 16,900
Accumulated Amortization	(2,849)
Accumulated Impairment Loss	(4,179)
Net Carrying Value, excluding foreign currency translation	$ 9,872