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Summary of Significant Accounting Policies (Tables)
 12 Months Ended
Jun. 30, 2018
Accounting Policies [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
The following information is necessary to calculate earnings per share for the periods presented:
 
Year ended June 30,
 
2018
 
 
2017
 
 
2016
 
 
 
 
 
 
 
 
 
 
 
Net loss, as reported
 
$
(2,192,170
)
 
$
(2,088,666
)
 
$
(2,304,831
)
 
 
 
 
 
 
 
 
 
 
 
 
 
Weighted average common shares outstanding
 
 
4,013,537
 
 
 
4,013,537
 
 
 
4,013,537
 
Effect of dilutive stock options
 
 
-
 
 
 
-
 
 
 
-
 
Weighted average diluted common shares outstanding
 
 
4,013,537
 
 
 
4,013,537
 
 
 
4,013,537
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Net loss per common share
 
 
 
 
 
 
 
 
 
 
 
 
Basic
 
$
(0.55
)
 
$
(0.52
)
 
$
(0.57
)
Diluted
 
$
(0.55
)
 
$
(0.52
)
 
$
(0.57
)
 
 
 
 
 
 
 
 
 
 
 
 
 
Employee stock options excluded from computation of diluted income per share amounts because their effect would be anti-dilutive
 
 
-
 
 
 
-
 
 
 
-
 
Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions [Table Text Block] The following table summarizes the weighted average assumptions utilized in the Black-Scholes option pricing model for options granted during the fiscal years ended June 30, 2018, 2017 and 2016.
 
 
 
2018
 
 
2017
 
 
2016
 
 
 
 
 
 
 
 
 
 
 
Weighted-average fair value
 
$
0.99
 
 
$
0.86
 
 
$
0.78
 
Weighted-average volatility
 
 
44
%
 
 
37
%
 
 
30
%
Weighted-average expected life (in years)
 
 
6.0
 
 
 
6.0
 
 
 
6.0
 
Weighted-average risk-free interest rate
 
 
2.11
%
 
 
1.74
%
 
 
1.91
%
Dividend yield
 
 
0
%
 
 
0
%
 
 
0
%