Goodwill and Other Intangible Assets, Net Other Intangible Assets (Details) - USD ($) $ in Thousands	6 Months Ended
	Jul. 03, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Gross Amount	$ 137,693	$ 133,793
Accumulated Amortization	(45,007)	(39,302)
Customer Lists and Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Amount	126,766	123,005
Accumulated Amortization	(36,756)	(31,868)
Trademarks and Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Amount	3,636	3,546
Accumulated Amortization	(2,331)	(2,080)
Non-Compete Agreements and other [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Amount	6,768	6,719
Accumulated Amortization	(5,509)	(4,948)
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Amount	523	523
Accumulated Amortization	$ (411)	$ (406)
Amortization period, in years	17 years
Minimum [Member] | Customer Lists and Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization period, in years	6 years
Minimum [Member] | Trademarks and Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization period, in years	3 years
Minimum [Member] | Non-Compete Agreements and other [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization period, in years	1 year
Maximum [Member] | Customer Lists and Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization period, in years	21 years
Maximum [Member] | Trademarks and Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization period, in years	8 years
Maximum [Member] | Non-Compete Agreements and other [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization period, in years	9 years