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Stock-Based Compensation Plans (Details)
9 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]    
Risk-free interest rates 1.80% 1.71%
Expected option life in years 6 years 3 months 6 years 3 months
Expected stock price volatility 54.68% 55.41%
Expected dividend yield 0.00% 0.00%