Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Jan. 31, 2023	Jan. 31, 2022
Deferred tax assets:
Federal and state credits	$ 40,134	$ 33,485
Net operating losses	6,659	7,466
Expenses not currently deductible	3,164	1,294
Operating lease liabilities	1,582	2,096
Stock-based compensation	3,678	3,632
Foreign deferred	262	191
Gross deferred tax assets	55,479	48,164
Valuation allowance	(28,596)	(24,083)
Total deferred tax assets	26,883	24,081
Deferred tax liabilities
Intangible assets	(6,782)	(8,150)
Property and equipment	(617)	(386)
Operating lease assets	(1,452)	(1,971)
Net deferred tax assets	$ 18,032	$ 13,574