Schedule of Finite and Indefinite-lived Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 29, 2014	Dec. 31, 2014
Goodwill [Line Items]
Amortization of Intangible Assets	$ 2,764us-gaap_AmortizationOfIntangibleAssets	$ 3,102us-gaap_AmortizationOfIntangibleAssets
Accumulated Amortization	48,004		43,685
Intangible assets, net	171,976		178,911
Amortization of Financing Costs	1,654us-gaap_AmortizationOfFinancingCosts	1,026us-gaap_AmortizationOfFinancingCosts
Total	4,418	4,128
Intangible Assets, Gross (Excluding Goodwill)	219,980		222,596
Trade names
Goodwill [Line Items]
Tradenames (indefinite-lived)	34,912		34,912
Technology
Goodwill [Line Items]
Gross Carrying Amount	63,726		63,726
Accumulated Amortization	16,230		14,902
Intangible assets, net	47,496		48,824
Customer relationships
Goodwill [Line Items]
Gross Carrying Amount	73,511		76,242
Accumulated Amortization	13,844		12,735
Intangible assets, net	59,667		63,507
Loan acquisition costs
Goodwill [Line Items]
Gross Carrying Amount	40,612		40,612
Accumulated Amortization	16,101		14,447
Intangible assets, net	24,511		26,165
Other intangibles, principally patents
Goodwill [Line Items]
Gross Carrying Amount	7,219		7,104
Accumulated Amortization	1,829		1,601
Intangible assets, net	$ 5,390		$ 5,503

Amortization of Intangible Assets and Financing Costs

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Amount of noncash expense included in interest expense to issue debt and obtain financing associated with the related debt instruments. Alternate captions include noncash interest expense.

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The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.

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Amount before accumulated amortization of intangible assets, excluding goodwill.

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Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

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