Schedule of Finite and Indefinite-lived Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified	Mar. 30, 2013	Dec. 29, 2012
Goodwill [Line Items]
Total gross finite-lived intangible assets	$ 68,766	$ 68,687
Accumulated amortization	(18,629)	(16,524)
Total net finite-lived intangible assets	50,137	52,163
Total	73,637	75,663
Trade names
Goodwill [Line Items]
Tradenames (indefinite-lived)	23,500	23,500
Technology
Goodwill [Line Items]
Total gross finite-lived intangible assets	31,900	31,900
Customer relationships
Goodwill [Line Items]
Total gross finite-lived intangible assets	16,896	16,869
Loan acquisition costs
Goodwill [Line Items]
Total gross finite-lived intangible assets	19,472	19,472
Other intangibles, principally patents
Goodwill [Line Items]
Total gross finite-lived intangible assets	$ 498	$ 446