Goodwill and Other Intangible Assets, Net (Other Intangible Assets) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Gross Amount	$ 190,757	$ 195,340
Accumulated Amortization	(64,313)	(50,577)
Intangible assets amortization expense	15,600	11,800	$ 10,600
Finite-Lived Intangible Assets, Net, Amortization Expense, Rolling Maturity [Abstract]
2017	15,435
2018	14,173
2019	12,217
2020	11,718
2021	11,232
Customer lists / relationships
Finite-Lived Intangible Assets [Line Items]
Gross Amount	154,745	158,831
Accumulated Amortization	$ (51,800)	(41,445)
Customer lists / relationships | Minimum
Finite-Lived Intangible Assets [Line Items]
Amortization Period	6 years
Customer lists / relationships | Maximum
Finite-Lived Intangible Assets [Line Items]
Amortization Period	26 years
Developed technologies
Finite-Lived Intangible Assets [Line Items]
Gross Amount	$ 19,049	19,055
Accumulated Amortization	$ (1,394)	(154)
Developed technologies | Minimum
Finite-Lived Intangible Assets [Line Items]
Amortization Period	10 years
Developed technologies | Maximum
Finite-Lived Intangible Assets [Line Items]
Amortization Period	20 years
Trademarks / trade names
Finite-Lived Intangible Assets [Line Items]
Gross Amount	$ 8,344	8,478
Accumulated Amortization	$ (3,250)	(2,556)
Trademarks / trade names | Minimum
Finite-Lived Intangible Assets [Line Items]
Amortization Period	3 years
Trademarks / trade names | Maximum
Finite-Lived Intangible Assets [Line Items]
Amortization Period	15 years
Noncompete agreements
Finite-Lived Intangible Assets [Line Items]
Gross Amount	$ 8,096	8,453
Accumulated Amortization	$ (7,444)	(6,006)
Noncompete agreements | Minimum
Finite-Lived Intangible Assets [Line Items]
Amortization Period	1 year
Noncompete agreements | Maximum
Finite-Lived Intangible Assets [Line Items]
Amortization Period	9 years
Patents
Finite-Lived Intangible Assets [Line Items]
Amortization Period	17 years
Gross Amount	$ 523	523
Accumulated Amortization	$ (425)	$ (416)