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Accumulated Other Comprehensive Loss - Additional Information (Detail) (USD $)
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Jan. 31, 2014
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Jan. 31, 2013
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| Equity [Abstract] | ||
| Available for sale securities unrealized losses | $ 12,000 | $ 6,000 |
| X | ||||||||||
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- Definition
This item represents the unrealized losses for securities, at a point in time, which are categorized neither as held-to-maturity nor trading securities. No definition available.
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| X | ||||||||||
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- Details
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