Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical)

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Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($)
Sep. 30, 2018
Jun. 30, 2018
Statement of Financial Position [Abstract]    
Accounts receivable, allowance $ 600,833 $ 610,061
Preferred stock, par value $ 0.01 $ 0.01
Preferred stock, shares authorized 500,000 500,000
Common stock, par value $ 0.01 $ 0.01
Common stock, shares authorized 14,500,000 14,500,000
Common stock, shares issued 11,782,360 11,708,469
Common stock, shares outstanding 11,576,507 11,502,616
Treasury stock, shares 205,853 205,853