LINE OF CREDIT (Details) (USD $)	9 Months Ended
	Sep. 28, 2012 item
Revolving line of credit facility
LINE OF CREDIT
Outstanding amount	$ 3,000,000
Maximum borrowing capacity	5,000,000
Fee on unused commitments and customary fees (as a percent)	0.25%
Number of rolling quarters	4
Number of consecutive quarters without losses	2
Maximum ratio of total funded debt to EBITDA	1.75
Minimum asset coverage ratio	2.50
Percentage of increased interest rate in case of default	4.00%
Revolving line of credit facility | Minimum
LINE OF CREDIT
Net income after taxes	250,000
Revolving line of credit facility | Maximum
LINE OF CREDIT
Amount of additional indebtedness	2,000,000
Aggregate fair market value of stock that can be repurchased	5,000,000
Revolving line of credit facility | Prime rate
LINE OF CREDIT
Floating interest rate, basis	prime rate
Revolving line of credit facility | LIBOR
LINE OF CREDIT
Floating interest rate, basis	LIBOR
Spread on floating interest rate (as a percent)	2.25%
Standby letter of credit sub-facility
LINE OF CREDIT
Maximum borrowing capacity	$ 5,000,000