LONG-TERM DEBT (Details) (USD $)					0 Months Ended
	Mar. 30, 2013 Revolving Line of Credit	Mar. 30, 2013 Revolving Line of Credit Wells Fargo Bank	Dec. 19, 2012 Revolving Line of Credit Wells Fargo Bank	Mar. 30, 2013 Revolving Line of Credit Wells Fargo Bank Minimum	Apr. 29, 2013 Secured term loan facility Wells Fargo Bank Subsequent event
Long-term debt
Maximum borrowing capacity			$ 45,000,000
Outstanding amount	14,800,000
Unused credit capacity under the agreement	30,200,000
Interest rate (as a percent)	3.75%
Minimum aggregate principal amount of secured borrowing commitments to establish with the lender prior to March 29, 2013				10,000,000
Contingent reduction in the maximum borrowing capacity if additional borrowing commitments are not obtained prior to March 29, 2013		10,000,000
Principal amount of debt					10,000,000
Principal amount payable in quarterly installments					$ 166,667