SIGNIFICANT ACCOUNTING POLICIES (Details)	3 Months Ended		9 Months Ended
	Sep. 25, 2015 USD ($) $ / shares	Sep. 26, 2014 USD ($)	Sep. 25, 2015 USD ($) Segment $ / shares	Sep. 26, 2014 USD ($)	Dec. 31, 2014 USD ($)
Fiscal Year [Abstract]
Number of shipping days	63 days	63 days	186 days	187 days
Consolidation Policy [Abstract]
Percentage of voting interest			50.00%
Inventories [Abstract]
Raw materials	$ 10,285,000		$ 10,285,000		$ 6,457,000
Finished goods	14,656,000		14,656,000		14,714,000
Inventory reserves	(705,000)		(705,000)		(618,000)
LIFO reserve	(4,054,000)		(4,054,000)		(4,672,000)
Total inventories	$ 20,182,000		$ 20,182,000		$ 15,881,000
Percentage of LIFO inventory	71.00%		71.00%		78.00%
FIFO inventory amount	$ 4,100,000		$ 4,100,000		$ 4,700,000
Accumulated Comprehensive Loss [Abstract]
Foreign currency translation adjustments	900,000		900,000		700,000
Pension and other postretirement benefits adjustments	800,000		800,000		800,000
Change in Estimate [Line Items]
Property and equipment, net	13,950,000		$ 13,950,000		$ 10,158,000
Segment Reporting [Abstract]
Number of segments | Segment			1
Minimum [Member]
Assumptions for expected term, volatility and risk-free rate [Abstract]
Expected term			10 months 24 days	1 year 10 months 24 days
Volatility			133.10%	244.20%
Risk-free interest rate			0.30%	0.60%
Maximum [Member]
Assumptions for expected term, volatility and risk-free rate [Abstract]
Expected term			4 years 9 months 18 days	4 years 9 months 18 days
Volatility			313.70%	353.40%
Risk-free interest rate			1.40%	1.70%
Leasehold Improvements [Member]
Change in Estimate [Line Items]
Property and equipment, net	1,100,000		$ 1,100,000
Accelerated depreciation	$ 259,000		$ 618,000
Accelerated depreciation on a per share basis (in dollars per share) | $ / shares	$ 0.03		$ 0.08
Selling, General and Administrative Expenses [Member]
Stock appreciation right income [Abstract]
Stock appreciation right expense	$ 13,000	$ 15,000	$ 76,000	$ 50,000