CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - USD ($)	Mar. 31, 2018	Jun. 30, 2017
Statement of Financial Position [Abstract]
Trade accounts receivable, allowance for doubtful accounts	$ 11,600	$ 11,600
Shareholders' equity:
Common stock,par value	$ 0.05	$ 0.05
Common stock, authorized shares	7,000,000	7,000,000
Common stock, issued shares	1,513,914	1,513,914
Common stock, outstanding shares	1,513,914	1,513,914
Stock held in treasury, shares	19,802	19,802