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 ($)
Dec. 31, 2017
Jun. 30, 2017
Dec. 31, 2016
Jun. 30, 2016
Statement of Financial Position [Abstract]        
Accounts receivable, allowance $ 347,413 $ 571,511 $ 495,760 $ 492,498
Preferred stock, par value $ .01 $ .01 $ .01 $ .01
Preferred stock, shares authorized 500,000 500,000 500,000 500,000
Common stock, par value $ 0.01 $ 0.01 $ 0.01 $ 0.01
Common stock, shares authorized 14,500,000 14,500,000 14,500,000 14,500,000
Common stock, shares issued 11,395,401 11,225,385 10,993,054 10,958,275
Common stock, shares outstanding 11,221,347 11,190,606 10,713,372 10,686,093
Treasury stock, shares 174,054 34,779 34,779 27,279