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Debt (Details) - USD ($)
12 Months Ended
Jun. 24, 2020
Sep. 30, 2020
Jun. 23, 2020
Line Of Credit Facility [Line Items]      
Short-term debt   $ 1,750,000  
Revolving Credit Facility [Member]      
Line Of Credit Facility [Line Items]      
Revolving loan credit facility   200,000,000  
Borrowing base of credit facility $ 32,000,000 $ 31,000,000 $ 45,000,000
Credit facility maturity   Nov. 30, 2022  
Effective Interest rate   4.25%  
Debt issuance cost net of amortization   $ 246,724  
Borrowing base of credit facility, quarterly reduction amount $ 1,000,000    
Borrowing base of credit facility, quarterly reduction term description   Quarterly Commitment Reduction, whereby the borrowing base is reduced by $1,000,000 each April 15, July 15, October 15 and January 15, commencing on July 15, 2020.  
Funded debt to EBITDA ratio   400.00%  
Credit facility outstanding amount   $ 28,750,000  
Short-term debt   1,750,000  
Availability under outstanding credit facility   $ 2,250,000  
Revolving Credit Facility [Member] | Minimum [Member]      
Line Of Credit Facility [Line Items]      
Current ratio   100.00%  
Revolving Credit Facility [Member] | Minimum [Member] | Prime Rate [Member]      
Line Of Credit Facility [Line Items]      
Interest rate basis   1.00%  
Revolving Credit Facility [Member] | Minimum [Member] | London Interbank Offered Rate (LIBOR) [Member]      
Line Of Credit Facility [Line Items]      
Interest rate basis   2.50%  
Revolving Credit Facility [Member] | Maximum [Member] | Prime Rate [Member]      
Line Of Credit Facility [Line Items]      
Interest rate basis   1.75%  
Revolving Credit Facility [Member] | Maximum [Member] | London Interbank Offered Rate (LIBOR) [Member]      
Line Of Credit Facility [Line Items]      
Interest rate basis   3.25%