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LONG-TERM DEBT (Details) - USD ($)
3 Months Ended 9 Months Ended
Jul. 12, 2018
Sep. 30, 2019
Sep. 30, 2019
Sep. 30, 2018
May 31, 2019
Jul. 11, 2018
Feb. 08, 2017
Long-term debt              
Borrowings of debt     $ 3,951,933 $ 124,336,547      
Repayment of debt       $ 6,870,596      
Revolving credit facility              
Long-term debt              
Revolving credit facility maximum borrowings $ 200,000,000       $ 225,000,000 $ 50,000,000  
Revolving credit facility increased maximum borrowing capacity if certain conditions are met 500,000,000            
Revolving credit facility outstanding   $ 91,300,000 $ 91,300,000        
Interest rate on outstanding borrowings (as a percent)   4.68% 4.68%        
Borrowing base $ 200,000,000       $ 300,000,000    
Amount of applicable margin decrease for each applicable level (as a percent) 0.25%            
Borrowings of debt   $ 4,000,000 $ 4,000,000        
Revolving credit facility | LIBOR              
Long-term debt              
Variable rate LIBOR   LIBOR        
Margin (as a percent)     2.25%        
Revolving credit facility | Prime              
Long-term debt              
Variable rate ABR   Prime Rate        
Margin (as a percent)     1.25%        
Revolving credit facility | Maximum              
Long-term debt              
Debt to EBITDAX ratio             400.00%
Revolving credit facility | Maximum | LIBOR              
Long-term debt              
Margin (as a percent) 3.00%            
Revolving credit facility | Maximum | Prime              
Long-term debt              
Margin (as a percent) 2.00%            
Revolving credit facility | Minimum              
Long-term debt              
Current assets to current liabilities ratio             100.00%
Revolving credit facility | Minimum | LIBOR              
Long-term debt              
Margin (as a percent) 2.00%            
Revolving credit facility | Minimum | Prime              
Long-term debt              
Margin (as a percent) 1.00%