DESCRIPTION OF THE BUSINESS AND BASIS OF PRESENTATION - Financial Instruments on a Recurring Basis (Details) - Fair value, recurring - USD ($) $ in Thousands	Apr. 30, 2023	Jan. 31, 2023
Level 1 Inputs
Fair value of assets and liabilities measured on recurring and nonrecurring basis
Totals	$ 112,546	$ 68,647
Level 1 Inputs | Money market funds
Fair value of assets and liabilities measured on recurring and nonrecurring basis
Cash and cash equivalents	112,546	$ 68,647
Level 2 Inputs
Fair value of assets and liabilities measured on recurring and nonrecurring basis
Available-for-sale-securities	30,376
Totals	$ 30,376