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Debt - Additional Information (Details) - Credit Facility - Revolving Credit Facility
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2020
USD ($)
Jun. 30, 2020
USD ($)
Debt Instrument    
Borrowing base $ 75.0 $ 75.0
Debt outstanding 59.0 59.0
Outstanding letters of credit 4.3 4.3
Maximum borrowing capacity $ 11.7 $ 11.7
Commitment fee   0.50%
Average interest rate during period 3.00% 3.40%
Percentage of proved reserves pledged as collateral 85.00% 85.00%
Total net leverage ratio (no greater than) 3.50 3.50
Interest coverage ratio (no less than) 2.25 2.25
Leverage ratio 0.5 0.5
Coverage ratio 27.93 27.93
Minimum | LIBOR    
Debt Instrument    
Basis spread on variable rate   2.00%
Minimum | Base Rate    
Debt Instrument    
Basis spread on variable rate   1.00%
Maximum | LIBOR    
Debt Instrument    
Basis spread on variable rate   3.00%
Maximum | Base Rate    
Debt Instrument    
Basis spread on variable rate   2.00%