XML 23 R25.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Note 4 - Fair Value of Financial Instruments and Long Term Debt (Tables) | 12 Months Ended
--- | ---
Apr. 30, 2014
Fair Value Disclosures [Abstract] |
Schedule of Debt [Table Text Block] |
|  | As of April 30, |
|  | 2014 |  |  | 2013 |
Capitalized lease obligations discounted at 5.22% to 7.09% due in various monthly installments through 2048 (Note 8) |  | $ | 10,195 |  |  |  | 9,891 |
5.72% Senior notes due in 14 installments beginning September 30, 2012 and ending March 30, 2020 |  |  | 75,000 |  |  |  | 90,000 |
5.22% Senior notes due August 9, 2020 |  |  | 569,000 |  |  |  | 569,000 |
3.67% Senior notes (Series A) due in 7 installments beginning June 17, 2022, and ending June 15, 2028 |  |  | 150,000 |  |  |  | — |
3.75% Senior notes (Series B) due in 7 installments beginning December 17, 2022 and ending December 18, 2028 |  |  | 50,000 |  |  |  | — |
|  |  | 854,195 |  |  |  | 668,891 |
Less current maturities |  |  | 553 |  |  |  | 15,810 |
|  | $ | 853,642 |  |  |  | 653,081 |
Schedule of Maturities of Long-term Debt [Table Text Block] |
Years ended April 30, |  | Capital Leases |  |  | Senior Notes |  |  | Total |
2015 |  | $ | 553 |  |  |  | — |  |  |  | 553 |
2016 |  |  | 398 |  |  |  | 15,000 |  |  |  | 15,398 |
2017 |  |  | 375 |  |  |  | 15,000 |  |  |  | 15,375 |
2018 |  |  | 396 |  |  |  | 15,000 |  |  |  | 15,396 |
2019 |  |  | 417 |  |  |  | 15,000 |  |  |  | 15,417 |
Thereafter |  |  | 8,056 |  |  |  | 784,000 |  |  |  | 792,056 |
|  | $ | 10,195 |  |  |  | 844,000 |  |  | $ | 854,195 |

X
- Details
Name: | us-gaap_FairValueDisclosuresAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- 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
Name: | us-gaap_ScheduleOfDebtTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- 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
Name: | us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration