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SUPPLEMENTAL CASH FLOW INFORMATION (Details Narrative) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Supplemental Cash Flow Elements [Abstract]        
Interest expense paid $ 29,430 $ 61,587 $ 49,791  
Cash and cash equivalents, and restricted cash $ 83,261 $ 106,565 $ 88,342 $ 55,733