Property and Equipment (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Property and equipment [Line Items]
Less: Accumulated depreciation and amortization	$ (143,756)	$ (132,057)
Property and equipment, net	129,542	79,356
Asset Impairment Charges [Abstract]
Impairment of Long-Lived Assets Held-for-use	127	148	109
Land [Member]
Property and equipment [Line Items]
Property and equipment, gross	1,999	1,999
Leasehold Improvements [Member]
Property and equipment [Line Items]
Property and equipment, gross	84,659	78,764
Office furniture and equipment [Member]
Property and equipment [Line Items]
Property and equipment, gross	46,226	26,957
Production machinery, computer equipment and software [Member]
Property and equipment [Line Items]
Property and equipment, gross	106,072	89,183
Property under capital lease [Member]
Property and equipment [Line Items]
Property and equipment, gross	1,672	1,672
Construction in Progress [Member]
Property and equipment [Line Items]
Property and equipment, gross	$ 32,670	$ 12,838