Quarterly report pursuant to Section 13 or 15(d)

Notes Payable and Other Long Term Debt (Narrative) (Details)

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Notes Payable and Other Long Term Debt (Narrative) (Details) - USD ($)
3 Months Ended 9 Months Ended 47 Months Ended 50 Months Ended
Mar. 23, 2020
Mar. 31, 2020
Dec. 09, 2019
Mar. 07, 2024
Mar. 09, 2024
Dec. 31, 2019
Sep. 30, 2019
Mar. 07, 2019
Debt Instrument [Line Items]                
Borrowings outstanding   $ 44,794,000       $ 32,244,000 $ 38,200,000  
Letter of credit related to workers' compensation   $ 600,000       600,000    
LIBOR | 2018 Master Loan Agreement                
Debt Instrument [Line Items]                
Basis spread added to monthly LIBOR   1.80%            
Working Capital Loan                
Debt Instrument [Line Items]                
Loan agreement face amount   $ 23,000,000            
Borrowings outstanding   $ 10,000,000       0    
Proceeds from working capital loan $ 10,000,000              
Loan maturity date   Nov. 28, 2021            
$38.2 Million Equipment Loan                
Debt Instrument [Line Items]                
Loan agreement face amount   $ 38,200,000            
Borrowings outstanding   $ 30,294,000       32,244,000    
Periodic payment     $ 598,000   $ 650,000      
Frequency of periodic payment   monthly            
Loan maturity date   Mar. 09, 2024            
$4.5 Million Equipment Loan                
Debt Instrument [Line Items]                
Loan agreement face amount   $ 4,500,000           $ 4,500,000
Borrowings outstanding   $ 4,500,000       $ 0    
Frequency of periodic payment   monthly            
Loan maturity date   Mar. 07, 2024            
$4.5 Million Equipment Loan | Scenario Forecast                
Debt Instrument [Line Items]                
Periodic payment       $ 93,750