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Stock-Based Compensation - Total Stock-Based Compensation Recognized for Stock-Based Awards in Condensed Consolidated Statements of Operations (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jul. 31, 2020 | Jul. 31, 2019 | Jul. 31, 2020 | Jul. 31, 2019
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] |  |  |  |
Stock-based compensation | $ 3,090 | $ 3,411 | $ 6,098 | $ 6,393
Cost of revenue |  |  |  |
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] |  |  |  |
Stock-based compensation | 259 | 344 | 513 | 629
Sales and marketing |  |  |  |
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] |  |  |  |
Stock-based compensation | 485 | 523 | 966 | 969
Research and development |  |  |  |
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] |  |  |  |
Stock-based compensation | 1,074 | 1,238 | 2,125 | 2,334
General and administrative |  |  |  |
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] |  |  |  |
Stock-based compensation | $ 1,272 | $ 1,306 | $ 2,494 | $ 2,461

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