Consolidated Balance Sheets (Parenthetical) - USD ($)	Dec. 31, 2016	Jun. 30, 2016
Statement of Financial Position [Abstract]
Allowance for doubtful accounts (in dollars)	$ 96,868	$ 98,868
Accumulated amortization and depreciation (in dollars)	7,361,655	6,976,282
Patents, Accumulated amortization (in dollars)	$ 938,119	$ 885,394
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	20,000,000	20,000,000
Common stock, shares issued	9,132,203	7,948,234
Common stock, shares outstanding	8,993,354	7,809,385
Treasury stock, shares	138,849	138,849