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Investments (Details Textual 1) (USD $)
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3 Months Ended | |
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May 31, 2013
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May 31, 2012
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| Schedule of Investments [Line Items] | ||
| Interest income on AFS debt securities | $ 1,900,000 | $ 1,400,000 |
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Accolade [Member]
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| Schedule of Investments [Line Items] | ||
| Dividend income | 0 | 0 |
| Interest income on AFS debt securities | $ 1,300,000 | $ 1,200,000 |
| Contractual maturity of AFS debt securities | Jan. 31, 2023 | |
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Maximum [Member] | Accolade [Member]
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| Schedule of Investments [Line Items] | ||
| Less than 20% ownership interest | 20.00% | |
| X | ||||||||||
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- Definition
Contractual maturity of AFS debt securities. No definition available.
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| X | ||||||||||
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- Definition
Other investment, ownership percentage No definition available.
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| X | ||||||||||
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- Definition
Income derived from investments in equity securities representing a distribution of earnings to shareholders by the investee companies. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Income derived from investments in debt securities and on cash and cash equivalents the earnings of which reflect the time value of money or transactions in which the payments are for the use or forbearance of money. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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