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Investments in Affiliates (Details Textual) (USD $)
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3 Months Ended | |
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Apr. 30, 2013
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Apr. 30, 2012
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| (Loss) gain on sale of investment in affiliates | $ (67,000) | $ 814,000 |
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Minerva Networks Inc [Member]
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| Proceeds from Sale of Equity Method Investments | 900,000 | |
| (Loss) gain on sale of investment in affiliates | $ 100,000 | |
| X | ||||||||||
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- Definition
This item represents the amount of gain (loss) arising from the disposal of an equity method investment. No definition available.
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| X | ||||||||||
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- Definition
The cash inflow associated with the sale of equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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