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Fair Value Measurement - Additional Information (Detail) - USD ($) | 1 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Aug. 31, 2017 | Jan. 31, 2020 | Jan. 31, 2019 | Apr. 30, 2019
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |  |
Change in fair value of contingent consideration |  | $ 100,000 | $ (60,000) |
Gemini Technologies, Incorporated |  |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |  |
Contingent consideration maximum payout | $ 17,100,000 |  |  |
Business combination, contingent consideration payable performance period | 3 years |  |  |
Change in fair value of contingent consideration |  | 100,000 |  |
Business combination contingent consideration liability |  | 0 |  |
(Level 1) | Fair Value on Recurring Basis |  |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |  |
Cash and cash equivalents |  | $ 46,100,000 |  | $ 41,000,000.0

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- Definition Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References No definition available. + Details
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