Subsequent Events	3 Months Ended
Apr. 30, 2021
Subsequent Events [Abstract]
Subsequent Events	15. Subsequent Events On May 29, 2019, the Company’s Board of Directors authorized a program to repurchase up to $50.0 million of the Company’s ordinary shares through June 30, 2020. On May 29, 2020, the Board approved an extension of this program for an additional twelve months ending June 30, 2021. On May 25, 2021, the Board extended the repurchase program for another 12 months through June 30, 2022. The repurchase program does not obligate the Company to acquire any particular amount of ordinary shares, and it may be suspended at any time at the Company’s discretion. As of June 7, 2021, there was approximately $49.0 million available for repurchases under the repurchase program through June 30, 2022.

The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-URI http://asc.fasb.org/topic&trid=2122774

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6842918&loc=SL6314017-165662

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