DISCONTINUED OPERATIONS DISCONTINUED OPERATIONS (Financial Information for Discontinued Operations) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on the sale of equipment	$ 0	$ 424
Net income	0	310
Increase (Decrease) in Accounts Receivable	426	(3,681)
Increase (Decrease) in Inventories	416	(460)
Increase (Decrease) in Other Operating Assets	18	12
Accounts payable	(257)	(163)
Other current liabilities	123	199
Net cash provided by operating activities	0	997
Proceeds from sale of property and equipment	0	848
Payments to Acquire Property, Plant, and Equipment	0	26
Net cash used in investing activities	$ 0	(115)
Waste Services Segment [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue from services and product sales		1,929
Cost of sales for services		1,423
Selling, general, and administrative expenses		202
Gain on the sale of equipment		6
Net income		310
Discontinued Operation, Income (Loss) from Discontinued Operation During Phase-out Period, Net of Tax		310
Depreciation and Amortization, Discontinued Operations		106
Net cash provided by operating activities		997
Net cash used in investing activities		(115)
Discontinued Operations [Member] | Waste Services Segment [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on the sale of equipment		6
Increase (Decrease) in Accounts Receivable		(212)
Increase (Decrease) in Inventories		1
Increase (Decrease) in Other Operating Assets		3
Accounts payable		354
Other current liabilities		25
Proceeds from sale of property and equipment		6
Payments to Acquire Property, Plant, and Equipment		$ 121