Intangible Assets and Goodwill - Gross Carrying Amount (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Gross carrying amount and accumulated amortization of acquired identifiable intangible assets
Gross Carrying Amount	$ 43,040	$ 43,587
Accumulated Amortization	(4,988)	(4,336)
Total	38,052	39,251
Goodwill	72,083	72,387
Translation loss on goodwill		(304)
Goodwill impairments	0	0
In process R&D
Gross carrying amount and accumulated amortization of acquired identifiable intangible assets
Gross Carrying Amount	29,000	29,000
Total	$ 29,000	$ 29,000
Acquired technology
Gross carrying amount and accumulated amortization of acquired identifiable intangible assets
Weighted Average Amortization Period	10 years	10 years
Gross Carrying Amount	$ 13,150	$ 13,697
Accumulated Amortization	(4,624)	(4,042)
Total	$ 8,526	$ 9,655
Customer relationships, Backlog & Trademark
Gross carrying amount and accumulated amortization of acquired identifiable intangible assets
Weighted Average Amortization Period	6 years	6 years
Gross Carrying Amount	$ 890	$ 890
Accumulated Amortization	(364)	(294)
Total	$ 526	$ 596