Income Taxes (Provision for Income Taxes) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 29, 2012	Dec. 31, 2011	Jan. 01, 2011
Current:
Federal	$ 19,132	$ 8,931	$ 5,530
State	2,460	1,929	2,176
Foreign	1,175	1,719	569
Current provision	22,767	12,579	8,275
Deferred:
Federal	6,692	10,829	7,027
State	603	1,307	(331)
Foreign	(784)	(304)	(84)
Deferred provision	6,511	11,832	6,612
Total income tax expense (benefit)	$ 29,278	$ 24,411	$ 14,887