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Senior Secured Credit Agreement (Details) - USD ($)
Apr. 11, 2016
Nov. 09, 2021
Sep. 30, 2021
Aug. 05, 2021
Jun. 30, 2021
Line of Credit Facility [Line Items]          
Minimum current ratio 1.00        
Senior Secured Reserve-Based Credit Facility | Line of Credit | Revolving credit facility          
Line of Credit Facility [Line Items]          
Term of revolving credit facility 3 years        
Maximum amount available under revolving credit facility $ 50,000,000        
Minimum consolidated tangible net worth 40,000,000     $ 40,000,000 $ 50,000,000
Initial borrowing base $ 50,000,000        
Amount outstanding     $ 4,000,000    
Placement fee percentage 0.50%        
Commitment fee percentage 0.25%        
Maximum total leverage ratio (not more than) 3.00        
Senior Secured Reserve-Based Credit Facility | Line of Credit | Revolving credit facility | Subsequent Event          
Line of Credit Facility [Line Items]          
Initial borrowing base   $ 50,000,000      
LIBOR | Minimum          
Line of Credit Facility [Line Items]          
Variable interest rate 0.25%        
LIBOR | Senior Secured Reserve-Based Credit Facility | Line of Credit | Revolving credit facility          
Line of Credit Facility [Line Items]          
Basis spread on variable rate 2.75%        
Prime rate | Senior Secured Reserve-Based Credit Facility | Line of Credit | Revolving credit facility          
Line of Credit Facility [Line Items]          
Basis spread on variable rate 1.00%