Goodwill and Intangible Assets - Intangible Assets (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 62,388	$ 52,870
Accumulated Amortization	(44,254)	(41,943)
Intangibles, net	18,134	10,927
Technology
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	33,975	30,499
Accumulated Amortization	(28,112)	(26,818)
Intangibles, net	$ 5,863	$ 3,681
Weighted Average Amortization Period	5 years 3 months 18 days	5 years 4 months 24 days
Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 19,561	$ 16,981
Accumulated Amortization	(14,651)	(13,982)
Intangibles, net	$ 4,910	$ 2,999
Weighted Average Amortization Period	8 years 4 months 24 days	8 years 4 months 24 days
Trademarks
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 1,531
Accumulated Amortization	(64)
Intangibles, net	$ 1,467
Weighted Average Amortization Period	5 years
Patents
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 7,007	$ 5,076
Accumulated Amortization	(1,192)	(908)
Intangibles, net	$ 5,815	$ 4,168
Weighted Average Amortization Period	12 years 8 months 12 days	12 years 6 months
Other
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 314	$ 314
Accumulated Amortization	(235)	(235)
Intangibles, net	$ 79	$ 79
Weighted Average Amortization Period	2 years 2 months 12 days	2 years 2 months 12 days