Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($)	Jun. 30, 2018	Jun. 30, 2017
Statement of Financial Position [Abstract]
Allowance for doubtful trade accounts receivable	$ 13,364	$ 7,356
Preferred stock: Series D, par value	$ .01	$ .01
Preferred stock: Series D, shares authorized	500,000	500,000
Preferred stock: Series D, shares issued	0	0
Preferred stock: Series D, shares outstanding	0	0
Common stock: Class A, par value	$ 0.01	$ 0.01
Common stock: Class A, shares authorized	44,500,000	44,500,000
Common stock: Class A, shares issued	25,764,544	24,215,733
Common stock: Class A, shares outstanding	25,764,544	24,215,733