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EQUITY (Narrative) (Details) - $ / shares
2 Months Ended 3 Months Ended 5 Months Ended 7 Months Ended 12 Months Ended
Jun. 04, 2018
May 31, 2018
Mar. 31, 2018
May 31, 2018
Dec. 31, 2018
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Oct. 31, 2019
Stockholders Equity Note [Line Items]                    
Financial Designation, Predecessor and Successor [Fixed List]       Predecessor Successor Successor Successor Predecessor Predecessor  
Common stock, shares, outstanding         10,042,468 10,183,467 10,042,468      
Common stock, shares issued   10,000,016   10,000,016 10,054,816 10,221,008 10,054,816      
Class of warrant or right, outstanding 800,000                  
Class of warrant or right, number of securities called by warrants or rights 800,000                  
Pro rata share percentage of new common stock for predecessor unitholders 5.00%                  
Distributions description           The partnership agreement required that the Predecessor make distributions of available cash from operating surplus in the following manner: first, 98% to the unitholders, pro rata, and 2% to the general partner, until the Predecessor distributed for each outstanding common unit an amount equal to the minimum quarterly distribution for that quarter; and thereafter, cash in excess of the minimum quarterly distributions is distributed to the unitholders and the general partner based on the percentages below.        
General partner affiliate ownership percentage for call               80.00%    
Period of distribution of available cash to unitholders after the end of each quarter               45 days    
Percentage of common stock outstanding 8.00%                  
Class of warrant or right exercisable period 5 years                  
Class of warrant or right, exercise price of warrants or rights $ 37.48                 $ 30.48
Senior Note Holders [Member]                    
Stockholders Equity Note [Line Items]                    
Pro rata share percentage of new common stock for predecessor unitholders 95.00%                  
Harvest                    
Stockholders Equity Note [Line Items]                    
Percentage of limited partnership interest               98.00%    
Percentage of general partnership interest       2.00% 2.00% 2.00%   2.00%    
Harvest | Common Unitholders                    
Stockholders Equity Note [Line Items]                    
Percentage of limited partnership interest       98.00%            
Ener Vest Ltd [Member] | Harvest                    
Stockholders Equity Note [Line Items]                    
Percentage of general partnership interest   2.00% 2.00%