Goodwill and Other Intangible Assets - Amortization of the Acquired Intangible Assets Other than Goodwill (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Amortized intangible assets
Gross Carrying Amount	$ 152,036	$ 154,113
Accumulated Amortization	(42,855)	(38,536)
Customer Relationships
Amortized intangible assets
Gross Carrying Amount	140,524	142,400
Accumulated Amortization	(34,606)	(30,648)
Patents
Amortized intangible assets
Gross Carrying Amount	759	759
Accumulated Amortization	(633)	(607)
Technology
Amortized intangible assets
Gross Carrying Amount	2,500	2,500
Accumulated Amortization	(1,019)	(977)
Trade Names
Amortized intangible assets
Gross Carrying Amount	7,105	7,293
Accumulated Amortization	(5,449)	(5,143)
License Agreements
Amortized intangible assets
Gross Carrying Amount	603	610
Accumulated Amortization	(603)	(610)
Other
Amortized intangible assets
Gross Carrying Amount	545	551
Accumulated Amortization	$ (545)	$ (551)