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Stock-Based Compensation - Additional Information (Details) $ in Millions | 3 Months Ended
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Apr. 30, 2019 USD ($)
Stock Options |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
Unrecognized share-based compensation expense related to unvested stock option grants | $ 31.2
Stock-based compensation expenses recognized on straight line basis offering period | 3 years
Restricted Stock Units (RSUs) |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
Unrecognized share-based compensation expense related to unvested stock option grants | $ 31.2
Stock-based compensation expenses recognized on straight line basis offering period | 3 years
ESPP |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
Unrecognized share-based compensation expense related to unvested stock option grants | $ 31.2
Stock-based compensation expenses recognized on straight line basis offering period | 3 years

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- Definition Unrecognized cost of unvested share-based compensation awards. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
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- Details
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