INCOME TAXES (Details 3) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Deferred tax assets
Federal, state, and foreign net operating losses	$ 20,372	$ 18,713
Postretirement benefits	631	608
Deferred employee benefits	1,688	1,924
Accrued pension	16,410	15,738
Inventory valuation	2,766	3,067
Foreign tax credit carryforwards	7,693	7,847
Other	2,030	2,804
Deferred Tax Assets, Gross	51,590	50,701
Less valuation allowance	(45,012)	(43,663)
Total deferred tax assets	6,578	7,038
Deferred Tax Liabilities, Net [Abstract]
Tax over book depreciation	(3,509)	(3,662)
Inventory valuation	(1,995)	(2,006)
Intangible assets	(1,600)	(1,637)
Other	(303)	(391)
Total deferred tax liabilities	(7,407)	(7,696)
Net deferred tax assets and liabilities	$ (829)	$ (658)