Stock-Based Compensation Plans (Details 1) |
12 Months Ended | ||
|---|---|---|---|
Jun. 30, 2018 |
Jun. 30, 2017 |
Jun. 30, 2016 |
|
| Equity [Abstract] | |||
| Risk-free interest rates | 1.98% | 1.80% | 1.71% |
| Expected option life in years | 5 years 11 months 12 days | 6 years 3 months | 6 years 3 months |
| Expected stock price volatility | 57.42% | 54.68% | 55.41% |
| Expected dividend yield | 0.00% | 0.00% | 0.00% |