COMMITMENTS AND CONTINGENCIES (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Dec. 31, 2014
Commitments And Contingencies [Line Items]
Loss contingency accrual	$ 156	$ 376
Restructuring Reserve	4,068	3,764
Asset retirement obligation:
Total asset retirement obligations	$ 2,223	$ 2,461
Key management
Commitments And Contingencies [Line Items]
Usual length of consulting, employment and non-compete agreements	1 year
One-time Termination Benefits | Chief Executive Officer
Commitments And Contingencies [Line Items]
Restructuring Reserve	$ 665
Range of possible loss, maximum	$ 2,000