Property and Equipment (Details) (USD $) In Thousands, unless otherwise specified	Jan. 03, 2015	Dec. 28, 2013
Property and equipment [Line Items]
Less: Accumulated depreciation and amortization	$ (166,263)	$ (143,756)
Property and equipment, net	165,453	129,542
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	89,203	84,659
Office furniture and equipment [Member]
Property and equipment [Line Items]
Property and equipment, gross	59,587	46,226
Production machinery, computer equipment and software [Member]
Property and equipment [Line Items]
Property and equipment, gross	122,913	106,072
Property under capital lease [Member]
Property and equipment [Line Items]
Property and equipment, gross	1,077	1,672
Construction in Progress [Member]
Property and equipment [Line Items]
Property and equipment, gross	$ 56,937	$ 32,670