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Basic and Diluted Earnings Per Share (Parenthetical) (Detail) (2% Converitble Notes, Convertible Notes)
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Aug. 31, 2012
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Nov. 30, 2003
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2% Converitble Notes | Convertible Notes
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| Schedule Of Earnings Per Share Basic And Diluted [Line Items] | ||
| Debt instrument, interest rate | 2.00% | 2.00% |
| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Contractual interest rate for funds borrowed, under the debt agreement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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