Goodwill and Other Intangibles (Schedule of Goodwill) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Cost	$ 182,081	$ 61,512
Accumulated Amortization	(37,102)	(18,395)
Net	144,979	43,117
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Cost	121,820	35,077
Accumulated Amortization	(18,554)	(10,702)
Net	$ 103,266	24,375
Weighted-average amortization life	16 years 2 months 12 days
Trademarks, trade names and brand names
Finite-Lived Intangible Assets [Line Items]
Cost	$ 27,439	12,739
Accumulated Amortization	(4,184)	(2,649)
Net	$ 23,255	10,090
Weighted-average amortization life	15 years 4 months 24 days
Developed technology, patents and patent applications
Finite-Lived Intangible Assets [Line Items]
Cost	$ 16,527	5,591
Accumulated Amortization	(3,518)	(2,591)
Net	$ 13,009	3,000
Weighted-average amortization life	14 years 9 months 18 days
Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Cost	$ 774	774
Accumulated Amortization	(737)	(714)
Net	$ 37	60
Weighted-average amortization life	8 years 3 months 18 days
Customer order backlog
Finite-Lived Intangible Assets [Line Items]
Cost	$ 8,130	0
Accumulated Amortization	(7,529)	0
Net	$ 601	0
Weighted-average amortization life	3 months 18 days
Other
Finite-Lived Intangible Assets [Line Items]
Cost	$ 7,391	7,331
Accumulated Amortization	(2,580)	(1,739)
Net	$ 4,811	$ 5,592
Weighted-average amortization life	7 years 6 months 24 days