Financial Instruments and Fair Value - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2024	Apr. 30, 2023	Jan. 31, 2024	Jan. 31, 2023
Debt Securities, Available-for-Sale [Line Items]
Interest income and realized gains and losses from available-for-sale debt securities	$ 1,300	$ 1,000
Carrying value of fixed deposit accounts	131,810	$ 127,741	$ 144,914	$ 113,541
Fixed Deposit Accounts [Member] | Level 1 [Member]
Debt Securities, Available-for-Sale [Line Items]
Carrying value of fixed deposit accounts	$ 12,900		$ 7,000