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Earnings per share (Tables) | 12 Months Ended
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Jun. 30, 2011
Earnings per Share | The number of shares used to calculate earnings per share are as follows (in thousands, except per share data):
|  | Year Ended June 30, |
|  | 2011 |  |  | 2010 |  |  | 2009 |
Net earnings used for basic and diluted earnings per share |  | $ | 112,302 |  |  | $ | 109,776 |  |  | $ | 105,242 |
Weighted average shares used in basic computation |  |  | 37,098 |  |  |  | 37,255 |  |  |  | 37,802 |
Dilutive stock options |  |  | 74 |  |  |  | 92 |  |  |  | 98 |
Weighted average shares used in diluted computation |  |  | 37,172 |  |  |  | 37,347 |  |  |  | 37,900 |
Basic EPS |  | $ | 3.03 |  |  | $ | 2.95 |  |  | $ | 2.78 |
Diluted EPS |  | $ | 3.02 |  |  | $ | 2.94 |  |  | $ | 2.78

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations. + Details
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Namespace Prefix: | us-gaap
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration