Goodwill and Other Intangible Assets - Summary of Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Other intangible assets:
Gross Carrying Amount	$ 142,319	$ 110,983
Accumulated Amortization	(57,104)	(50,803)
Net Amount	85,215	60,180
Amortization of Intangible Assets	$ 7,770	6,817	$ 6,603
Finite-Lived Intangible Assets, Remaining Amortization Period	10 years 1 month 6 days
Customer lists / relationships
Other intangible assets:
Gross Carrying Amount	$ 92,194	64,323
Accumulated Amortization	(38,682)	(37,088)
Net Amount	$ 53,512	27,235
Finite-Lived Intangible Assets, Remaining Amortization Period	10 years 9 months 18 days
Technology and other intangibles
Other intangible assets:
Gross Carrying Amount	$ 47,925	44,460
Accumulated Amortization	(18,422)	(13,715)
Net Amount	$ 29,503	30,745
Finite-Lived Intangible Assets, Remaining Amortization Period	8 years 8 months 12 days
In process research and development
Other intangible assets:
Gross Carrying Amount	$ 2,200	2,200
Accumulated Amortization	0	0
Net Amount	$ 2,200	$ 2,200