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Fair Value Of Financial Instruments And Long-Term Debt (Tables) | 12 Months Ended
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Apr. 30, 2012
Fair Value Of Financial Instruments And Long-Term Debt [Abstract] |
Long-Term Debt At Carrying Amount |
|  | As of April 30,
|  | 2012 |  | 2011
Capitalized lease obligations discounted at 5.22% to 7.09% due in |  |  |  |
various monthly installments through 2048 (Note 7) | $ | 9,645 |  | 10,344
Mortgage notes payable due in various installments through January |  |  |  |
2013 with interest at 6% |  | 22 |  | 503
5.72% senior notes due in 14 installments beginning September 30, 2012 |  |  |  |
and ending March 30, 2020 |  | 100,000 |  | 100,000
5.22% senior notes due August 9, 2020 |  | 569,000 |  | 569,000
|  | 678,667 |  | 679,847
Less current maturities |  | 10,737 |  | 1,167
| $ | 667,930 |  | 678,680
Aggregate Maturities Of Long-Term Debt |
Years ended April 30, |  |
2013 | $ | 10,737
2014 |  | 15,759
2015 |  | 439
2016 |  | 15,278
2017 |  | 15,250
Thereafter |  | 621,204
| $ | 678,667

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- Definition Tabular disclosure of information pertaining to short-term and long-debt instruments or arrangements, including but not limited to identification of terms, features, collateral requirements and other information necessary to a fair presentation. + References No definition available. + Details
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- Definition Tabular disclosure of the combined aggregate amount of maturities and sinking fund requirements for all long-term borrowings for each of the five years following the date of the latest balance sheet date presented. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 + Details
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