Goodwill and Other Intangible Assets, Net Other Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Apr. 03, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Gross Amount	$ 136,450	$ 133,793
Accumulated Amortization	(41,772)	(39,302)
Customer Lists and Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Amount	125,549	123,005
Accumulated Amortization	(33,917)	(31,868)
Trademarks and Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Amount	3,636	3,546
Accumulated Amortization	(2,217)	(2,080)
Non-Compete Agreements and other [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Amount	6,742	6,719
Accumulated Amortization	(5,230)	(4,948)
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Amount	523	523
Accumulated Amortization	$ (408)	$ (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