Income Taxes - Summary of Tax Valuation Allowance (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2022	Jan. 31, 2021	Jan. 31, 2020
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	$ 17,962
Balance at End of Period	24,083	$ 17,962
Valuation Allowance of Deferred Tax Assets [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	17,962	14,670	$ 12,526
Additional Charged to Expenses	4,874	3,292	2,144
Additions Charged to Other Account	1,247	0	0
Deductions Charged to Expenses or Other Accounts	0	0	0
Balance at End of Period	$ 24,083	$ 17,962	$ 14,670