Quarterly report pursuant to Section 13 or 15(d)

FAIR VALUE - Assets and Liabilities Accounted For At Fair Value On A Recurring Basis (Details)

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FAIR VALUE - Assets and Liabilities Accounted For At Fair Value On A Recurring Basis (Details) - USD ($)
Jun. 30, 2018
Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt Exchange Derivatives – Current Liabilities $ (10,923,000) $ 0
Fair Value, Measurements, Recurring | Quoted Prices In Active Markets for Identical Assets (Liabilities) (Level 1)    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Commodity Derivatives – Current Asset (crude oil swaps) 0 0
Commodity Derivatives – Noncurrent Asset (crude oil swaps) 0 0
Commodity Derivatives – Current Liabilities (crude oil swaps) 0 0
Commodity Derivatives – Noncurrent Liabilities (crude oil swaps) 0 0
Debt Exchange Derivatives – Current Liabilities 0  
Total 0 0
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Commodity Derivatives – Current Asset (crude oil swaps) 0 0
Commodity Derivatives – Noncurrent Asset (crude oil swaps) 0 0
Commodity Derivatives – Current Liabilities (crude oil swaps) (43,644,644) (18,681,891)
Commodity Derivatives – Noncurrent Liabilities (crude oil swaps) (28,611,421) (11,496,929)
Debt Exchange Derivatives – Current Liabilities 0  
Total (72,256,065) (30,178,820)
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Commodity Derivatives – Current Asset (crude oil swaps) 0 0
Commodity Derivatives – Noncurrent Asset (crude oil swaps) 0 0
Commodity Derivatives – Current Liabilities (crude oil swaps) 0 0
Commodity Derivatives – Noncurrent Liabilities (crude oil swaps) 0 0
Debt Exchange Derivatives – Current Liabilities (10,923,000)  
Total $ (10,923,000) $ 0