Business Combinations - Schedule of Intangible Assets Acquired and Expected Lives for Finite-Lived Intangible Assets (Detail) $ in Thousands	Apr. 30, 2021 USD ($)
Acquired Finite Lived Intangible Assets [Line Items]
Intangible assets	$ 1,983
Customer Relationships [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Intangible assets	$ 787
Finite-lived intangible assets useful life	5 years
Trade Names [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Intangible assets	$ 639
Finite-lived intangible assets useful life	5 years
Technology [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Intangible assets	$ 438
Finite-lived intangible assets useful life	5 years
Other Intangible Assets [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Intangible assets	$ 119
Other Intangible Assets [Member] | Minimum [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Finite-lived intangible assets useful life	6 months
Other Intangible Assets [Member] | Maximum [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Finite-lived intangible assets useful life	5 years