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Commitments and Contingencies (Details 2) (USD $)
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Jan. 31, 2013
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Jan. 31, 2012
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Jan. 15, 2012
Unified Messaging Solutions, LLC
Patent infringement
item
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Nov. 16, 2012
1st Technology, LLC
Patent infringement
item
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| Commitments and Contingencies | ||||
| Letters of credit outstanding that used to satisfy deposit requirements under facility leases | $ 828,000 | $ 520,000 | ||
| Cash collateral considered as restricted cash | $ 828,000 | $ 520,000 | ||
| Legal proceedings | ||||
| Number of patents infringed | 4 | 3 |
| X | ||||||||||
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- Definition
Represents the number of patents infringed. No definition available.
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| X | ||||||||||
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- Definition
Carrying amount as of the balance sheet date of cash collateral held for borrowed securities, for which the cash is restricted as to withdrawal or usage. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. No definition available.
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| X | ||||||||||
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- Details
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