Balance Sheet Components (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 30, 2012	Jan. 01, 2012	Jan. 02, 2011	Dec. 31, 2011
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Depreciation and amortization	$ 1,223,000	$ 1,220,000	$ 1,236,000
Capital asset recorded	800,000			1,100,000
Accumulated depreciation on capital lease assets	301,000			810,000
Capital leases	$ 426,000	$ 287,000