SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 4) (USD $)	12 Months Ended
	Dec. 29, 2012	Dec. 31, 2011	Jan. 01, 2011
Supplemental Statements of Cash Flow Information
Accrued interest expense on a note payable		$ 70,000	$ 117,000
Interest paid on a note payable		94,000
Income taxes paid	209,000	337,000	125,000
Accrued equipment and leasehold improvements	$ 764,000	$ 199,000	$ 330,000
Supplier concentration risk
Concentration
Number of major suppliers	5
Purchases | Supplier concentration risk | Five major suppliers
Concentration
Percentage of concentration risk	32.00%
Purchases | Supplier concentration risk | Largest supplier
Concentration
Percentage of concentration risk	13.00%