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Earnings Per Share (Tables) | 6 Months Ended
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Dec. 31, 2012
Earnings Per Share [Abstract] |
Schedule of Earnings per Share | Basic earnings per share are computed by dividing net income by the weighted-average number of common shares outstanding. Diluted earnings per share are computed by dividing net income by the weighted-average number of common and potential common shares outstanding.
| Quarter ended |  | Six months ended
| December 31, |  | December 31,
| 2012 |  | 2011 |  | 2012 |  | 2011
| (in thousands, except per share data)
Numerator: |  |  |  |  |  |  |
Net Income | $ | 16,357 |  |  | $ | 21,367 |  |  | $ | 33,999 |  |  | $ | 39,746 |
Denominator: |  |  |  |  |  |  |
Weighted-average shares, basic | 27,713 |  |  | 27,244 |  |  | 27,665 |  |  | 27,191 |
Dilutive effect of share-based payments | 245 |  |  | 430 |  |  | 263 |  |  | 413 |
Weighted-average shares, diluted | 27,958 |  |  | 27,674 |  |  | 27,928 |  |  | 27,604 |
Net income per common share, basic | $ | 0.59 |  |  | $ | 0.78 |  |  | $ | 1.23 |  |  | $ | 1.46 |
Net income per common share, diluted | $ | 0.59 |  |  | $ | 0.77 |  |  | $ | 1.22 |  |  | $ | 1.44 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations. + References No definition available. + Details
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