INDEBTEDNESS (Details) (USD $)	3 Months Ended
	Mar. 27, 2015	Mar. 28, 2014	Dec. 31, 2014	Feb. 19, 2014
BMO Credit Agreement [Member]
Line of Credit Facility [Line Items]
Maximum borrowing capacity				$ 27,000,000
Expiration date of Credit Facility	Feb. 17, 2017
Eligible Assets as borrowing base	28,300,000
Amount outstanding	21,800,000		22,000,000
Unused commitment fee per quarter (in hundredths)	0.25%
Amortization of debt issuance cost	57,000	161,000
BMO Credit Agreement [Member] | Base Rate [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Basis Spread (in hundredths)	0.50%
BMO Credit Agreement [Member] | Base Rate [Member] | Maximum [Member]
Line of Credit Facility [Line Items]
Basis Spread (in hundredths)	1.00%
BMO Credit Agreement [Member] | Eurodollar [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Basis Spread (in hundredths)	1.50%
BMO Credit Agreement [Member] | Eurodollar [Member] | Maximum [Member]
Line of Credit Facility [Line Items]
Basis Spread (in hundredths)	2.00%
BMO Credit Agreement [Member] | Federal Funds Rate [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Basis Spread (in hundredths)	0.50%
BMO Credit Agreement [Member] | Federal Funds Rate [Member] | Maximum [Member]
Line of Credit Facility [Line Items]
Basis Spread (in hundredths)	1.50%
BMO Credit Agreement [Member] | Letter of Credit [Member]
Line of Credit Facility [Line Items]
Maximum borrowing capacity				3,000,000
Amount outstanding	1,100,000		1,100,000
PB Loan Agreement [Member]
Line of Credit Facility [Line Items]
Amortization of debt issuance cost	$ 109,000