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Acquired Intangible Asset Net - Additional Information (Detail) (USD $)
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3 Months Ended | 12 Months Ended | 1 Months Ended | 1 Months Ended | 12 Months Ended | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Apr. 30, 2014
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Jan. 31, 2014
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Oct. 31, 2013
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Jul. 31, 2013
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Apr. 30, 2013
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Jan. 31, 2013
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Apr. 30, 2014
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Apr. 30, 2013
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Dec. 31, 2012
Shopzilla Customer Contracts
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Dec. 31, 2012
Shopzilla Customer Contracts
Holdback Liabilities
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Jan. 31, 2014
Customer Relationships
Shopzilla Customer Contracts
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Mar. 31, 2013
Customer Relationships
Shopzilla Customer Contracts
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Dec. 31, 2012
Customer Relationships
Shopzilla Customer Contracts
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Apr. 30, 2014
Discontinued Operations
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Apr. 30, 2014
Discontinued Operations
Customer Relationships
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Apr. 30, 2014
Discontinued Operations
Developed Technology
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| Acquired Intangible Assets Amortization [Line Items] | ||||||||||||||||
| Impairment of acquired intangible assets | $ 2,500,000 | $ 2,500,000 | $ 2,354,000 | $ 146,000 | ||||||||||||
| Purchase of customer contracts, purchase price | 30,000 | 200,000 | 4,700,000 | |||||||||||||
| Purchase of customer contracts, cash remitted | 4,200,000 | |||||||||||||||
| Accrued expenses and other current liabilities | 27,071,000 | 29,959,000 | 27,071,000 | 29,959,000 | 500,000 | |||||||||||
| Purchase of customer contracts, remaining useful life of acquired contractual customer relationships | 10 years | |||||||||||||||
| Amortization of acquired intangible assets | $ 288,000 | $ 282,000 | $ 283,000 | $ 282,000 | $ 282,000 | $ 267,000 | $ 1,135,000 | $ 549,000 | ||||||||