BUSINESS COMBINATIONS (Details) - Acquisition [Member] $ in Thousands	Mar. 31, 2016 USD ($)
Business Acquisition [Line Items]
Accounts receivable, net	$ 764
Materials and supplies	95
Equipment and property	2,077
Customer contracts	21,203
Other intangible assets	375
Current liabilities	(2,149)
Other assets and liabilities, net	(1,256)
Total cash purchase price	$ 21,109