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Consolidated Condensed Balance Sheets (Unaudited) (Parentheticals) - USD ($)
Dec. 31, 2022
Jun. 30, 2022
Accounts Receivable, Allowance for Credit Loss, Current $ 184,847 $ 206,093
Preferred Stock, Par or Stated Value Per Share (in dollars per share) $ 0.01 $ 0.01
Preferred Stock, Shares Authorized (in shares) 30,000,000 30,000,000
Common Stock, Par or Stated Value Per Share (in dollars per share) $ 0.01 $ 0.01
Common Stock, Shares Authorized (in shares) 50,000,000 50,000,000
Common Stock, Shares, Outstanding, Ending Balance (in shares) 18,394,296 18,460,538
Series B Preferred Stock [Member]    
Preferred Stock, Shares Authorized (in shares) 700,000 700,000
Preferred Stock, Shares Outstanding, Ending Balance (in shares) 625,375 625,375
Preferred Stock, Shares Issued (in shares) 625,375 625,375
Series B-1 Preferred Stock [Member]    
Preferred Stock, Par or Stated Value Per Share (in dollars per share) $ 550,000 $ 550,000
Preferred Stock, Shares Outstanding, Ending Balance (in shares) 212,402 212,402
Preferred Stock, Shares Issued (in shares) 212,402 212,402