INCOME TAXES (Deferred Tax Liabilities and Assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Deferred Tax Liabilities [Abstract]
Property and equipment	$ (935)	$ (1,459)
Gross deferred tax liabilities	(935)	(1,459)
Deferred tax assets
Intangibles and goodwill	2,038	2,286
Accrued property taxes	53	13
Allowance for doubtful accounts	14	14
Inventory capitalization	110	63
Stock options	605	1,147
Federal net operating loss carry forward	4,706	4,176
State net operating loss carry forward	1,658	1,758
State recycling equipment tax credit carry forward	4,593	4,598
Inventory valuation reserve	60	78
Accrued expenses	187	77
Other	11	11
Gross deferred tax assets	14,035	14,221
Valuation allowance	(13,073)	(12,665)	$ (11,949)
Net deferred tax assets	$ 27	$ 97