RELATED PARTY TRANSACTIONS - Narrative (Details) $ in Millions		12 Months Ended
	Mar. 05, 2019 series	Dec. 31, 2019 USD ($) property	Apr. 21, 2020 USD ($)	Jul. 31, 2019 agreement
Winkler Lea Transactions
Related Party Transaction [Line Items]
Number of agreements | agreement				2
WLR
Related Party Transaction [Line Items]
Purchase and sale agreement, proportionate share of production included in interest expense		$ 0.4
WLWI
Related Party Transaction [Line Items]
Purchase and sale agreement, proportionate share of production included in interest expense		$ 0.5
Purchase and sale agreement, number of producing properties (in properties) | property		0
Varde Partners, Inc. | Private Placement
Related Party Transaction [Line Items]
Number of new series of preferred stock | series	2
Subsequent Event | Revolving Credit Facility | Varde Partners, Inc. | Värde Investment Partners, L.P.
Related Party Transaction [Line Items]
Principal amount counterparty became lender to			$ 25.7