Goodwill and Other Intangible Assets - Summary of Other Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Other intangible assets:
Gross Carrying Amount	$ 146,856	$ 142,319
Accumulated Amortization	(67,735)	(57,104)
Net Amount	$ 79,121	85,215
Weighted Average Remaining Amortization Period (in years)	9 years 2 months 12 days
Amortization expense	$ 9,055	7,770	$ 6,817
Customer lists / relationships
Other intangible assets:
Gross Carrying Amount	97,355	92,194
Accumulated Amortization	(44,002)	(38,682)
Net Amount	$ 53,353	53,512
Weighted Average Remaining Amortization Period (in years)	9 years 9 months 18 days
Technology and other intangibles
Other intangible assets:
Gross Carrying Amount	$ 47,301	47,925
Accumulated Amortization	(21,533)	(18,422)
Net Amount	$ 25,768	29,503
Weighted Average Remaining Amortization Period (in years)	7 years 9 months 18 days
In process research and development
Other intangible assets:
Gross Carrying Amount	$ 2,200	2,200
Accumulated Amortization	$ (2,200)	0
Net Amount		$ 2,200