Convertible Promissory Notes - Additional Information (Details) - Convertible Promissory Notes $ / shares in Units, $ in Millions	3 Months Ended
Apr. 30, 2019 USD ($) $ / shares shares
Debt Instrument [Line Items]
Debt instrument term	3 years
Derivative liabilities	$ 0.2
Unamortized debt discount of notes	$ 0.1
Initial public offering
Debt Instrument [Line Items]
Debt conversion, converted instrument, shares issued \| shares	426,223
Share price per share \| $ / shares	$ 36.00
Dropbox
Debt Instrument [Line Items]
Debt instrument face amount	$ 5.0
Interest rate percentage	2.75%
Atlassian
Debt Instrument [Line Items]
Debt instrument face amount	$ 10.0
Interest rate percentage	5.00%

The number of shares issued in exchange for the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or payments in the period.

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The price per share of the conversion feature embedded in the debt instrument.

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Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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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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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount, after accumulated amortization, of debt discount.

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Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

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