Quarterly report pursuant to Section 13 or 15(d)

BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details)

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BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details)
6 Months Ended
Sep. 18, 2020
Jun. 30, 2021
geographicArea
revenueSource
Jun. 30, 2020
Accounting Policies [Line Items]      
Reverse stock split ratio 0.1    
Number of revenue sources | revenueSource   2  
Number of geographic areas in which entity operates | geographicArea   3  
Minimum      
Accounting Policies [Line Items]      
Payment period   1 month  
Maximum      
Accounting Policies [Line Items]      
Payment period   3 months  
Revenue Benchmark | Operator Concentration Risk | Oil and Gas Sales | Top Four Operators      
Accounting Policies [Line Items]      
Concentration risk percentage   57.00% 51.00%