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Summary of Significant Accounting Policies (Details 1) - $ / shares
12 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2016
Weighted-average fair value $ 0.99 $ 0.86 $ 0.78
Weighted-average volatility 44.00% 37.00% 30.00%
Weighted-average expected life (in years) 6 years 6 years 6 years
Weighted-average risk-free interest rate 2.11% 1.74% 1.91%
Dividend yield 0.00% 0.00% 0.00%