Quarterly report pursuant to Section 13 or 15(d)

Acquisition of TLL, LLC - Summary of Preliminary Allocation of Purchase Price (Detail)

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Acquisition of TLL, LLC - Summary of Preliminary Allocation of Purchase Price (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 0 Months Ended
Apr. 30, 2015
Feb. 02, 2015
Jan. 31, 2015
Fair value of consideration:      
Cash, net of cash acquired $ 11,686us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired    
Contingent consideration 1,017us-gaap_BusinessCombinationContingentConsiderationLiability    
Fair value of assets acquired and liabilities assumed:      
Goodwill 58,134us-gaap_Goodwill   41,008us-gaap_Goodwill
Timeline Labs [Member]      
Fair value of consideration:      
Cash, net of cash acquired   14,186us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired
/ us-gaap_BusinessAcquisitionAxis
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Closing stock consideration   3,025us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory
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Deferred stock consideration   6,739us-gaap_BusinessAcquisitionEquityInterestIssuedOrIssuableValueAssigned
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Contingent consideration   514us-gaap_BusinessCombinationContingentConsiderationLiability
/ us-gaap_BusinessAcquisitionAxis
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Total purchase price   24,464us-gaap_BusinessCombinationConsiderationTransferred1
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Fair value of assets acquired and liabilities assumed:      
Current assets   249us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssets
/ us-gaap_BusinessAcquisitionAxis
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Other long-term assets   108us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets
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Finite-life intangible assets   6,720us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles
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Goodwill   17,453us-gaap_Goodwill
/ us-gaap_BusinessAcquisitionAxis
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Current liabilities   (66)us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilities
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Allocated purchase price   $ 24,464us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet
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