Furniture and Fixtures, Equipment and Leasehold Improvements (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Jan. 02, 2012	Dec. 27, 2010
Furniture and fixtures, equipment and leasehold improvements
Total furniture and fixtures, equipment and leasehold improvements	$ 70,737	$ 71,858
Less accumulated depreciation and amortization	(60,837)	(59,499)
Furniture and fixtures, equipment and leasehold improvements, net	9,900	12,359
Depreciation and amortization expense	3,613	4,230	4,773
Leasehold improvements
Furniture and fixtures, equipment and leasehold improvements
Total furniture and fixtures, equipment and leasehold improvements	32,061	33,250
Restaurant equipment
Furniture and fixtures, equipment and leasehold improvements
Total furniture and fixtures, equipment and leasehold improvements	16,242	16,125
Computer and telephone equipment
Furniture and fixtures, equipment and leasehold improvements
Total furniture and fixtures, equipment and leasehold improvements	11,670	11,557
Furniture and fixtures
Furniture and fixtures, equipment and leasehold improvements
Total furniture and fixtures, equipment and leasehold improvements	10,729	10,896
Vehicles
Furniture and fixtures, equipment and leasehold improvements
Total furniture and fixtures, equipment and leasehold improvements	$ 35	$ 30