Fair Value Measurements - Summary of Financial Assets Measured at Fair Value (Detail) - USD ($)	Jan. 31, 2023	Jan. 31, 2022
Fair Value Measurements Disclosure [Line Items]
Marketable securities	$ 1,244,000
Fair Value, Measurements, Recurring [Member]
Fair Value Measurements Disclosure [Line Items]
Cash equivalents	2,389,000	$ 0
Marketable securities		$ 0
Financial assets measured at fair value	3,633,000
Fair Value, Measurements, Recurring [Member] | Corporate Bonds [Member]
Fair Value Measurements Disclosure [Line Items]
Marketable securities	1,244,000
Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value Measurements Disclosure [Line Items]
Cash equivalents	2,389,000
Financial assets measured at fair value	3,633,000
Level 1 [Member] | Fair Value, Measurements, Recurring [Member] | Corporate Bonds [Member]
Fair Value Measurements Disclosure [Line Items]
Marketable securities	$ 1,244,000