Organization and Summary of Significant Accounting Policies (Details 5) (USD $)	12 Months Ended
	Dec. 31, 2012	Jan. 02, 2012	Dec. 27, 2010
Income Taxes
Net operating loss carryforwards for U.S. federal income tax purposes	$ 212,900,000
U.S. federal income tax
Income Taxes
Net operating loss carryforwards for U.S. federal income tax purposes	212,900,000
Lease termination reserve
Changes in lease termination reserve activity
Balance at the beginning of the period	245,000	533,000	785,000
Charged to costs and expenses	2,000	22,000	203,000
Payments and adjustments	(33,000)	(310,000)	(455,000)
Balance at the end of the period	$ 214,000	$ 245,000	$ 533,000