Acquisitions - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands	Oct. 08, 2019	Oct. 31, 2020	Apr. 30, 2020
Business Acquisition [Line Items]
Number of consecutive trading days ending with complete trading day	20 days
Number of consecutive trading days, prior to acquisition consummated date	5 days
Goodwill		$ 198,196	$ 197,877
Endgame, Inc.
Business Acquisition [Line Items]
Total purchase price	$ 234,000
Issuance of ordinary shares (in shares)	2,218,694
Repayment of outstanding indebtedness	$ 20,400
Cash deposit to expense fund for fees and expenses of representative and agent of securityholders	400
Payment of transaction expenses	5,900
Business acquisition tax withholding cash payment	$ 2,800
Percentage of shares to be held in indemnity escrow fund	11.00%
Number of shares to be held in indemnity escrow fund (in shares)	235,031
Indemnity escrow fund holding period	18 months
Business acquisition share price (in dollars per share)	$ 89.3836
Fair value of shares, consideration transferred (in dollars per share)	$ 84.12
Goodwill	$ 178,764