CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)	Sep. 30, 2016	Jun. 30, 2016
Accounts receivable, allowance for doubtful accounts	$ 97,534	$ 207,028
Other receivables, allowance for doubtful accounts	$ 145,242	$ 145,186
Preferred stock, shares authorized	2,000,000	2,000,000
Preferred stock, par value (in dollars per share)	$ 0	$ 0
Preferred Stock, Shares Issued	0	0
Common stock, shares authorized	50,000,000	50,000,000
Common stock, par value (in dollars per share)	$ 0	$ 0
Common stock, shares issued	8,456,032	8,456,032
Common stock, shares outstanding	8,280,535	8,280,535
Treasury stock, shares	175,497	175,497