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Fair Value Measurements (Details 4) (USD $)
In Thousands, unless otherwise specified |
Oct. 31, 2012
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Jan. 31, 2012
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| Investment Maturities: | ||
| Less than one year | $ 5,058 | $ 7,855 |
| One to three years | 7,730 | 4,140 |
| Investment Maturities, Total | $ 12,788 | $ 11,995 |
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- Details
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- Definition
Amount of available-for-sale debt securities at fair value maturing in the second fiscal year through the fifth fiscal year following the latest fiscal year. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of available-for-sale debt securities at fair value maturing in the next fiscal year following the latest fiscal year. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The fair value as of the balance sheet date of firm holdings in debt obligations issued by the US government including short-term Treasury bills, medium-term Treasury notes, and long-term Treasury bonds, as well as debt issued by agencies. Includes both pledged (to counterparties as collateral for financing transactions) and unpledged holdings. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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