Intangible Assets and Goodwill - Components of Intangible Assets (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Finite-lived Intangible Assets [Roll Forward]
Accumulated Amortization	$ (75,568)	$ (63,356)
Total	119,312
Intangible assets, gross	195,880	195,880
Intangible assets, net	120,312	132,524
In-process research and development
Finite-lived Intangible Assets [Roll Forward]
Indefinite-lived intangible assets	1,000	1,000
Customer relationships
Finite-lived Intangible Assets [Roll Forward]
Gross Carrying Amount	63,270	63,270
Accumulated Amortization	(43,484)	(38,084)
Total	$ 19,786	$ 25,186
Weighted Average Amortization Period	5 years 3 months 18 days	5 years 6 months
Non-compete agreements
Finite-lived Intangible Assets [Roll Forward]
Gross Carrying Amount	$ 6,500	$ 6,500
Accumulated Amortization	(5,666)	(5,366)
Total	$ 834	$ 1,134
Weighted Average Amortization Period	2 years 1 month 6 days	2 years 9 months 18 days
Technology
Finite-lived Intangible Assets [Roll Forward]
Gross Carrying Amount	$ 125,110	$ 125,110
Accumulated Amortization	(26,418)	(19,906)
Total	$ 98,692	$ 105,204
Weighted Average Amortization Period	11 years 10 months 24 days	12 years 8 months 12 days