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ACQUISITIONS AND DIVESTITURES - West Quito Draw Properties (Details) - USD ($)
$ in Millions
Feb. 06, 2018
Aug. 07, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2018
Feb. 16, 2017
West Quito Draw Properties            
ACQUISITIONS AND DIVESTITURES            
Purchase price $ 198.5          
6.75% senior notes due 2025            
ACQUISITIONS AND DIVESTITURES            
Interest rate (as a percent)   6.75% 6.75% 6.75% 6.75% 6.75%