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Note D - Debt (Details Textual) - USD ($)
9 Months Ended
May 19, 2021
Dec. 31, 2021
Dec. 31, 2020
Apr. 14, 2021
Mar. 08, 2021
Gain (Loss) on Extinguishment of Debt, Total   $ 1,706,614 $ (0)    
Revolving Credit Facility [Member] | JPMorgan Chase Bank N.A. [Member]          
Line of Credit Facility, Maximum Borrowing Capacity       $ 20,000,000 $ 10,000,000
ABL Facility [Member] | JPMorgan Chase Bank N.A. [Member]          
Line of Credit Facility, Maximum Borrowing Capacity $ 40,000,000        
Debt Instrument, Covenant, Borrowing Limit as Percent of Accounts Receivable 85.00%        
Debt Instrument, Covenant, Borrowing Limit, Factor Multiplied by the Net Orderly Liquidating Value of Inventory, Percentage 85.00%        
Debt Instrument, Covenant, Borrowing Limit, Factor Multiplied by the Net Orderly Liquidating Value of Equipment, Percentage 85.00%        
Debt Instrument, Covenant, Borrowing Limit, Machinery and Equipment Component Limit $ 5,000,000        
Debt Instrument, Covenant, Fixed Charge Coverage Ratio 1.10        
Line of Credit Facility, Maximum Borrowing Capacity, Maximum Conditional Increase $ 10,000,000        
Line of Credit Facility, Maximum Borrowing Capacity, Conditional Increase, Minimum Increments $ 5,000,000        
Long-term Line of Credit, Total   $ 15,187,824      
Line of Credit Facility, Interest Rate at Period End   1.80%      
ABL Facility [Member] | JPMorgan Chase Bank N.A. [Member] | London Interbank Offered Rate (LIBOR) [Member]          
Debt Instrument, Basis Spread on Variable Rate 1.70%        
Paycheck Protection Program CARES Act [Member]          
Gain (Loss) on Extinguishment of Debt, Total   $ 1,706,614      
Nonoperating Income (Expense) [Member] | Paycheck Protection Program CARES Act [Member]          
Gain (Loss) on Extinguishment of Debt, Total   $ 1,706,614