Goodwill and Other Intangible Assets, Net Other Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 26, 2014	Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items]
Gross Amount	$ 136,111	$ 119,141
Accumulated Amortization	(37,466)	(29,692)
Customer Lists and Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Amount	124,818	109,790
Accumulated Amortization	(30,249)	(23,647)
Trademarks and Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Amount	3,564	2,695
Accumulated Amortization	(1,970)	(1,594)
Non-Compete Agreements and other [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Amount	7,206	6,133
Accumulated Amortization	(4,844)	(4,055)
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Amount	523	523
Accumulated Amortization	$ (403)	$ (396)
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