Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Jan. 02, 2012
Deferred tax assets:
Net operating loss carryforward	$ 84,296	$ 82,682
Depreciation expense and impairment of long-lived assets	14,829	15,140
Contractual lease increases	1,040	1,311
Deferred franchise revenue	1,250	1,306
Stock-based compensation	1,163	1,137
Lease termination accrual	85	97
Accrued expenses	45	47
Allowance for doubtful accounts	121	101
Total deferred tax assets	102,829	101,821
Valuation allowance	$ (102,829)	$ (101,821)