SIGNIFICANT ACCOUNTING POLICIES (Details) $ in Thousands	3 Months Ended
	Apr. 01, 2016 USD ($) Segment	Mar. 27, 2015 USD ($)	Dec. 31, 2015 USD ($)
Consolidation Policy [Abstract]
Percentage of voting interest	50.00%
Fiscal Year [Abstract]
Number of shipping days	65 days	60 days
Inventories [Abstract]
Percentage of LIFO inventory	65.00%		67.00%
FIFO inventory amount	$ 3,600		$ 3,600
Raw materials	10,031		11,262
Finished goods	10,519		12,380
Inventory reserves	(727)		(738)
LIFO reserve	(3,629)		(3,637)
Total inventories	16,194		19,267
Accumulated Other Comprehensive Loss [Abstract]
Foreign currency translation adjustments	1,000		1,000
Pension and other postretirement benefits adjustments	$ 700		700
Segment Reporting [Abstract]
Number of segments | Segment	1
Reclassifications [Abstract]
Other assets	$ 30,746		31,001
Current maturities of long-term debt	1,663		1,143
Long-term debt	$ 21,093		21,435
Minimum [Member]
Assumptions for expected term, volatility and risk-free rate [Abstract]
Expected term	4 months 24 days	1 year 4 months 24 days
Volatility	152.10%	230.10%
Risk-free interest rate	0.50%	0.40%
Maximum [Member]
Assumptions for expected term, volatility and risk-free rate [Abstract]
Expected term	4 years 7 months 6 days	4 years 7 months 6 days
Volatility	303.50%	332.50%
Risk-free interest rate	1.20%	1.30%
Selling, General and Administrative Expenses [Member]
Stock appreciation right income [Abstract]
Stock appreciation right expense	$ 32	$ 20
ASU 2015-03 [Member]
Reclassifications [Abstract]
Other assets			1,747
Current maturities of long-term debt			1,143
Long-term debt			21,435
ASU 2015-03 [Member] | As Presented [Member]
Reclassifications [Abstract]
Other assets			3,882
Current maturities of long-term debt			1,800
Long-term debt			22,913
ASU 2015-03 [Member] | Reclassifications [Member]
Reclassifications [Abstract]
Other assets			(2,135)
Current maturities of long-term debt			(657)
Long-term debt			$ (1,478)