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Condensed Balance Sheets (Unaudited) (Parenthetical) - USD ($)
Sep. 30, 2017
Jun. 30, 2017
Statement of Financial Position [Abstract]    
Accounts receivable, allowance for doubtful accounts $ 45,000 $ 45,000
Common stock, par value $ 0.01 $ 0.01
Common stock, shares authorized 13,000,000 13,000,000
Common stock, shares issued 8,260,167 8,230,167
Common stock, shares outstanding 8,260,167 8,230,167