Goodwill and Intangible Assets - Details of Intangible Assets (Detail) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Oct. 31, 2021	Jan. 31, 2021
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 172,842	$ 171,176
Accumulated amortization	(70,283)	(56,581)
Total	102,559	114,595
Existing technology
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	26,180	26,180
Accumulated amortization	(11,171)	(8,367)
Total	$ 15,009	$ 17,813
Remaining useful life (in years)	4 years	4 years 9 months 18 days
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 111,357	$ 110,643
Accumulated amortization	(35,976)	(27,741)
Total	$ 75,381	$ 82,902
Remaining useful life (in years)	7 years 3 months 18 days	8 years
Trade name/trademarks
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 13,900	$ 13,900
Accumulated amortization	(5,980)	(4,005)
Total	$ 7,920	$ 9,895
Remaining useful life (in years)	3 years	3 years 9 months 18 days
Other intangibles
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 21,405	$ 20,453
Accumulated amortization	(17,156)	(16,468)
Total	$ 4,249	$ 3,985
Remaining useful life (in years)	5 years 1 month 6 days	5 years 1 month 6 days