Income taxes (Detail) - USD ($) $ in Thousands	3 Months Ended
Jan. 31, 2024	Jan. 31, 2023
Income Tax Disclosure [Abstract]
Effective tax rates	21.00%	20.50%
Income tax provision included discrete tax benefit due to share-based payment transactions	$ 369	$ 1,166

Amount of tax benefit for recognition of expense of award under share-based payment arrangement.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(i)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration