INCOME TAXES (Deferred Tax Liabilities and Assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Deferred Tax Liabilities [Abstract]
Property and equipment	$ 0	$ (300)
Gross deferred tax liabilities	0	(300)
Deferred tax assets
State recycling equipment tax credit carry forward	4,586	4,590
Federal net operating loss carry forward	2,980	3,901
State net operating loss carry forward	1,791	1,787
Intangibles and goodwill	1,014	1,178
Stock options	441	424
Accrued expenses	119	160
Interest expense limitation	47	0
Property and equipment	38	0
Inventory capitalization	23	72
Allowance for doubtful accounts	16	16
Accrued property taxes	6	6
Other	2	8
Gross deferred tax assets	11,063	12,142
Valuation allowance	(11,036)	(11,815)	$ (13,073)
Net deferred tax assets	$ 27	$ 27