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Summary Of Significant Accounting Policies (Tables) | 9 Months Ended
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Mar. 31, 2012
Summary Of Significant Accounting Policies [Abstract] |
Schedule Of Construction In Progress In Accounts Payable |
|  | March 31 2012 |  | March 31 2011
Construction in progress in accounts payable.............................. |  | $ 244 |  | $ 172
Schedule Of Basic And Diluted Earnings Per Share Calculations |
|  | Three Months Ended March 31 |  | Nine Months Ended March 31
|  | 2012 |  | 2011 |  | 2012 |  | 2011
| Net income................................................................. | $18,222 |  | $19,441 |  | $69,853 |  | $ 77,071
| Net income available to participating securities. | (36) |  | (25) |  | (125) |  | (109)
| Net income available to common shareholders. | $18,186 |  | $19,416 |  | $69,728 |  | $ 76,962
| Weighted average common shares outstanding – basic | 27,216 |  | 27,494 |  | 27,237 |  | 27,755
| Incremental share effect from: |  |  |  |  |  |  |
| Restricted stock...................................................... | 2 |  | 3 |  | 4 |  | 5
| Stock-settled stock appreciation rights.............. | 33 |  | 23 |  | 27 |  | 21
| Weighted average common shares outstanding – diluted.................................................................. | 27,251 |  | 27,520 |  | 27,268 |  | 27,781
| Net income per common share – basic and diluted | $ .67 |  | $ .71 |  | $ 2.56 |  | $ 2.77

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- Definition Tabular disclosure of construction in progress included in accounts payable at period end. + References No definition available. + Details
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