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Long-Term Debt (Details) - USD ($)
Sep. 16, 2019
Jun. 30, 2020
Line of Credit [Member]    
Long-Term Debt (Details) [Line Items]    
Line of Credit Facility, Maximum Borrowing Capacity $ 4,000,000  
Debt Instrument, Description of Variable Rate Basis 3-month LIBOR interest rate plus 4.75%  
Debt Instrument, Basis Spread on Variable Rate 4.75%  
Debt Instrument, Interest Rate, Effective Percentage   6.18%
8¼% Limited Convertible Senior Subordinated Notes Due 2012 [Member]    
Long-Term Debt (Details) [Line Items]    
Long-term Line of Credit   $ 373,000