Commitments and Contingencies Leases (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 29, 2012	Dec. 31, 2011	Dec. 25, 2010
Capital Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
Capital Leases, Future Minimum Payments Due, Next Twelve Months	$ 670
Capital Leases, Future Minimum Payments Due in Two Years	650
Capital Leases, Future Minimum Payments Due in Three Years	645
Capital Leases, Future Minimum Payments Due in Four Years	526
Capital Leases, Future Minimum Payments Due in Five Years	481
Capital Leases, Future Minimum Payments Due Thereafter	319
Capital Leases, Future Minimum Payments Due	3,291
Capital Leases, Future Minimum Payments, Interest Included in Payments	371
Capital lease obligations	2,920	464
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
Operating Leases, Future Minimum Payments Due, Next Twelve Months	1,982
Operating Leases, Future Minimum Payments, Due in Two Years	1,283
Operating Leases, Future Minimum Payments, Due in Three Years	1,144
Operating Leases, Future Minimum Payments, Due in Four Years	918
Operating Leases, Future Minimum Payments, Due in Five Years	535
Operating Leases, Future Minimum Payments, Due Thereafter	265
Operating Leases, Future Minimum Payments Due	6,127
Leases, Capital [Abstract]
Capital Leased Assets, Gross	3,376	717
Capital Leases, Lessee Balance Sheet, Assets by Major Class, Accumulated Depreciation	394	159
Leases, Operating [Abstract]
Operating Leases, Rent Expense, Net	$ 2,188	$ 2,334	$ 2,326