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Revolving Credit Facility - Narrative (Details)
6 Months Ended
Oct. 12, 2021
USD ($)
Mar. 31, 2022
USD ($)
Apr. 29, 2022
USD ($)
Apr. 28, 2022
USD ($)
Sep. 30, 2021
USD ($)
Sep. 28, 2017
USD ($)
Line of Credit Facility [Line Items]            
Outstanding borrowings   $ 63,000,000     $ 60,000,000  
Line of Credit | Revolving Credit Facility            
Line of Credit Facility [Line Items]            
Borrowing base           $ 25,000,000
Maximum facility amount           $ 500,000,000
Cash balance threshold, borrowing base 10.00%          
Cash balance threshold, number of consecutive business days exceeded 5 days          
Hedging requirement ratio for proved developed producing volumes, minimum   0.50        
Hedging requirement ratio for proved developed producing volumes, term   24 months        
Weighted average interest rate   3.46%     2.83%  
Available under the credit facility   $ 112,000,000        
Line of Credit | Revolving Credit Facility | Subsequent Event            
Line of Credit Facility [Line Items]            
Borrowing base     $ 200,000,000 $ 175,000,000    
Line of Credit | Revolving Credit Facility | Base Rate Loan | London Interbank Offered Rate (LIBOR)            
Line of Credit Facility [Line Items]            
Basis spread on variable rate 1.00%          
Line of Credit | Revolving Credit Facility | Base Rate Loan | Fed Funds Rate            
Line of Credit Facility [Line Items]            
Basis spread on variable rate 0.50%          
Line of Credit | Revolving Credit Facility | Minimum            
Line of Credit Facility [Line Items]            
Current ratio 1.0          
Leverage ratio for restricted payments after pro forma effect 2.0          
Line of Credit | Revolving Credit Facility | Minimum | Eurodollar Loan | London Interbank Offered Rate (LIBOR)            
Line of Credit Facility [Line Items]            
Basis spread on variable rate 2.75%          
Line of Credit | Revolving Credit Facility | Minimum | Base Rate Loan            
Line of Credit Facility [Line Items]            
Basis spread on variable rate 1.75%          
Unused capacity, commitment fee percentage 0.375%          
Line of Credit | Revolving Credit Facility | Maximum            
Line of Credit Facility [Line Items]            
Leverage ratio 3.25          
Leverage ratio for restricted payments 2.50          
Cash balance threshold, prepayment of lines of credit $ 15,000,000          
Line of Credit | Revolving Credit Facility | Maximum | Eurodollar Loan | London Interbank Offered Rate (LIBOR)            
Line of Credit Facility [Line Items]            
Basis spread on variable rate 3.75%          
Line of Credit | Revolving Credit Facility | Maximum | Base Rate Loan            
Line of Credit Facility [Line Items]            
Basis spread on variable rate 2.75%          
Unused capacity, commitment fee percentage 0.50%