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SUPPLEMENTAL CASH FLOW INFORMATION (Details Narrative) - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Dec. 31, 2019
Dec. 31, 2018
Supplemental Cash Flow Elements [Abstract]        
Interest expense paid $ 14,710 $ 12,927    
Cash and cash equivalents, and restricted cash $ 72,364 $ 82,181 $ 83,261 $ 106,565