Note 7 - Earnings Per Share - Shares Used in the Earnings Per Share Computations (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Mar. 31, 2018 |
Mar. 31, 2017 |
Mar. 31, 2018 |
Mar. 31, 2017 |
|
| Net earnings | $ 19,738 | $ 22,167 | $ 84,449 | $ 48,476 |
| Income allocated to participating securities | (18) | (20) | (70) | (42) |
| Income available to common shareholders | $ 19,720 | $ 22,147 | $ 84,379 | $ 48,434 |
| Basic (in shares) | 37,503 | 37,320 | 37,450 | 37,303 |
| Basic (in dollars per share) | $ 0.53 | $ 0.59 | $ 2.25 | $ 1.30 |
| Net income | $ 19,738 | $ 22,167 | $ 84,449 | $ 48,476 |
| Income available to common shareholders | $ 19,720 | $ 22,147 | $ 84,379 | $ 48,434 |
| Weighted-average shares outstanding – basic (in shares) | 37,503 | 37,320 | 37,450 | 37,303 |
| Dilutive effect of stock options and restricted stock units (in shares) | 639 | 174 | 483 | 183 |
| Weighted-average common shares outstanding – diluted (in shares) | 38,142 | 37,494 | 37,933 | 37,486 |
| Diluted (in dollars per share) | $ 0.52 | $ 0.59 | $ 2.22 | $ 1.29 |