Equity Incentive Plans and Employee Stock Purchase Plan - Employee Stock Purchase Plan, Additional Information (Details)	Apr. 30, 2020
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum employee contribution rate	15.00%

The highest percentage of annual salary that an employee is permitted to utilize with respect to the plan.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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