Income Taxes (Details 5) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Jan. 01, 2012
Components of the net non-current deferred income tax liability
Deferred compensation	$ (7,666)	$ (9,247)
Net operating losses	(23,062)	(16,542)
Tax credits	(8,380)	(6,017)
Deferred loan costs	0	(2,073)
Equity Awards	(1,816)	(2,881)
Other, net	(9,263)	(1,585)
Bond discount	0	(657)
Residual US tax liability on unrepatriated foreign earnings	0	(3,668)
Valuation allowance	(13,506)	(8,025)
Deferred Rent	4,864	(6,220)
Intangible assets	(45,955)	(70,860)
Depreciation	(11,293)	(74,431)
Total liability	$ (15,703)	$ (125,516)