Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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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.

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Percentage of voting equity interests acquired at the acquisition date in the business combination.

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Amount of currency on hand as well as demand deposits with banks or financial institutions, acquired at the acquisition date. 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.

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Amount of other assets expected to be realized or consumed before one year or the normal operating cycle, if longer, acquired at the acquisition date.

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Amount of intangible assets, excluding goodwill, acquired at the acquisition date.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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Holdback Agreements Related to Employees

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Business Combinations (Details) - USD ($) $ in Thousands			3 Months Ended
Business Combinations (Details) - USD ($) $ in Thousands	Jul. 31, 2020	May 07, 2020	Jul. 31, 2020	Jan. 31, 2020
Business Acquisition [Line Items]
Goodwill	$ 24,340		$ 24,340	$ 0
Minimum
Business Acquisition [Line Items]
Holdback agreements, service period			1 year
Maximum
Business Acquisition [Line Items]
Holdback agreements, service period			3 years
Keybase
Business Acquisition [Line Items]
Business acquisition, percentage of voting interests acquired		100.00%
Payments to acquire businesses, gross		$ 42,900
Goodwill		24,300
Intangible assets, other than goodwill		3,300
Business combination, current assets, other		15,300
Business combination, cash and equivalents		$ 16,400
Acquired finite-lived intangible assets, weighted average useful life	4 years 9 months 18 days	5 years
Holdback agreements related to employees		$ 20,000