Goodwill and Intangible Assets Schedule of Finite Lived Intangible Assets (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 30, 2011	Dec. 31, 2010
Finite-Lived Intangible Assets [Line Items]
Intangible assets excluding tradenames	$ 220,598,000	$ 218,939,000
Intangible assets, gross (excluding goodwill)	226,698,000	225,039,000
Accumulated amortization	(164,634,000)	(147,255,000)
Intangible assets, net	54,589,000	69,636,000
Intangible assets excluding tradenames, net	55,964,000	71,684,000
FiniteLivedIntangibleAssetsIncludingCustomerRelationshipsNet	62,064,000	77,784,000
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Amortization of intangible assets	16,100,000	18,100,000	19,800,000
Expected amortization for the year 2013	14,734,000
Expected amortization for the year 2014	13,423,000
Expected amortization for the year 2015	11,867,000
Expected amortization for the year 2016	10,571,000
Expected amortization for the year 2017	4,268,000
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Customer relationships	212,532,000	210,873,000
Accumulated amortization	(157,943,000)	(141,237,000)
Intangible assets, net	54,589,000	69,636,000
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Intangible asset, useful life	12 years
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Patents	5,800,000	5,800,000
Accumulated amortization	(4,425,000)	(3,835,000)
Intangible assets, net	1,375,000	1,965,000
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Intangible asset, useful life	10 years
Noncompete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Non-compete agreements	2,266,000	2,266,000
Accumulated amortization	(2,266,000)	(2,183,000)
Intangible assets, net	0	83,000
Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Trade names	6,100,000	6,100,000
Accumulated amortization	0	0
Trade names net	$ 6,100,000	$ 6,100,000