Goodwill and Other Intangible Assets - Amortization of the Acquired Intangible Assets Other than Goodwill (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Amortized intangible assets
Gross Carrying Amount	$ 153,596	$ 154,113
Accumulated Amortization	(54,151)	(38,536)
Customer Relationships
Amortized intangible assets
Gross Carrying Amount	141,784	142,400
Accumulated Amortization	(44,636)	(30,648)
Patents
Amortized intangible assets
Gross Carrying Amount	791	759
Accumulated Amortization	(670)	(607)
Technology
Amortized intangible assets
Gross Carrying Amount	2,500	2,500
Accumulated Amortization	(1,102)	(977)
Trade Names
Amortized intangible assets
Gross Carrying Amount	7,322	7,293
Accumulated Amortization	(6,544)	(5,143)
License Agreements
Amortized intangible assets
Gross Carrying Amount	629	610
Accumulated Amortization	(629)	(610)
Other
Amortized intangible assets
Gross Carrying Amount	570	551
Accumulated Amortization	$ (570)	$ (551)