Note 9 - Share-based Compensation - Restricted Stock and Restricted Stock Units Activity (Details) - Restricted Stock Units (RSUs) [Member] |
9 Months Ended |
|---|---|
|
Mar. 31, 2019
$ / shares
shares
| |
| Outstanding, Stock unit awards (in shares) | shares | 330,369 |
| Outstanding, Weighted average grant date fair value (in dollars per share) | $ / shares | $ 26.15 |
| Granted, Stock unit awards (in shares) | shares | 105,644 |
| Granted, weighted average grant date fair value (in dollars per share) | $ / shares | $ 18.60 |
| Vested, Stock unit awards (in shares) | shares | |
| Vested, weighted average grant date fair value (in dollars per share) | $ / shares | |
| Canceled (forfeited/expired), Stock unit awards (in shares) | shares | (33,227) |
| Canceled (forfeited/expired), weighted average grant date fair value (in dollars per share) | $ / shares | $ 23.36 |
| Outstanding, Stock unit awards (in shares) | shares | 402,786 |
| Outstanding, Weighted average grant date fair value (in dollars per share) | $ / shares | $ 24.40 |