SUPPLEMENTAL CASH FLOW INFORMATION (Details Narrative) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Supplemental Cash Flow Elements [Abstract]
Interest expense paid	$ 26,700	$ 26,500
Cash and cash equivalents	$ 64,669	$ 96,500	$ 45,637