Consolidated Balance Sheets (Parenthetical) - USD ($)	Jun. 30, 2017	Jun. 30, 2016
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 96,868	$ 96,868
Accumulated amortization and depreciation	7,794,580	6,976,282
Patents, Accumulated amortization	$ 995,568	$ 885,394
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, authorized	20,000,000	20,000,000
Common stock, issued	9,357,166	7,948,234
Common stock, outstanding	9,357,166	7,809,385
Treasury stock	0	138,849