Income Taxes - Change in Balance of Unrecognized Tax Benefits, Excluding Interest and Penalties (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2023	Jan. 31, 2022	Jan. 31, 2021
Income Tax Disclosure [Abstract]
Balance ,beginning of the year	$ 303	$ 384	$ 362
Increases in prior period tax positions	24	63	59
Increases in current period tax positions	136	67	5
Reductions related to lapse of statutes of limitations	(49)	(211)	(42)
Balance, end of the year	$ 414	$ 303	$ 384