DISCONTINUED OPERATIONS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Gain on the sale of business		$ 6,000
Gain on the sale of equipment	$ 0	320
Net income	0	7,320
Disposal Group, Including Discontinued Operation, Additional Disclosures [Abstract]
Gain on sale of property and equipment	0	(320)
Gain on the sale of business		(6,000)
Receivables	(1,692)	7,278
Inventories	(1,027)	2,029
Other assets	80	128
Accounts payable	(547)	(470)
Other current liabilities	433	66
Net cash provided by operating activities	0	1,783
Proceeds from sale of property and equipment	0	2,117
Purchases of property and equipment	(8)	(21)
Net cash used in by investing activities	0	6,644
Waste Services Segment [Member]
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Revenue from services and product sales		7,402
Cost of sales for services		5,486
Selling, general, and administrative expenses		678
Gain on the sale of business	(6,000)	6,031
Gain on the sale of equipment		51
Net income		7,320
Disposal Group, Including Discontinued Operation, Additional Disclosures [Abstract]
Net income from discontinued operations		7,320
Depreciation and amortization		402
Gain on sale of property and equipment		(51)
Gain on the sale of business	$ 6,000	(6,031)
Net cash provided by operating activities		1,783
Net cash used in by investing activities		6,644
Discontinued Operations | Waste Services Segment [Member]
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Gain on the sale of equipment		51
Disposal Group, Including Discontinued Operation, Additional Disclosures [Abstract]
Gain on sale of property and equipment		(51)
Receivables		(103)
Inventories		10
Other assets		12
Accounts payable		172
Other current liabilities		52
Proceeds from sale of property and equipment		76
Proceeds from sale of business, net of disposal costs		7,000
Purchases of property and equipment		$ (432)