Goodwill and Other Intangible Assets - Summary of Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Other intangible assets:
Gross Carrying Amount	$ 112,620	$ 77,194
Accumulated Amortization	(48,250)	(42,436)
Net Amount	64,370	34,758
Amortization expense	$ 5,815	4,035	$ 4,190
Finite-Lived Intangible Assets, Remaining Amortization Period	11 years 4 months 24 days
Customer lists / relationships
Other intangible assets:
Gross Carrying Amount	$ 63,386	51,804
Accumulated Amortization	(30,318)	(27,101)
Net Amount	$ 33,068	24,703
Finite-Lived Intangible Assets, Remaining Amortization Period	11 years 7 months 6 days
Patents
Other intangible assets:
Gross Carrying Amount	$ 10,319	10,319
Accumulated Amortization	(10,319)	(10,319)
Net Amount	0	0
Technology and other intangibles
Other intangible assets:
Gross Carrying Amount	36,715	12,871
Accumulated Amortization	(7,613)	(5,016)
Net Amount	$ 29,102	7,855
Finite-Lived Intangible Assets, Remaining Amortization Period	11 years
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