COMMITMENTS - Employee Benefit Plans (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2024	Jan. 31, 2023	Jan. 31, 2022
Employee Benefit Plans
Company's expense for defined contribution savings plans	$ 2.9	$ 2.7	$ 2.3
Minimum
Employee Benefit Plans
Deferred period	4 years
Maximum
Employee Benefit Plans
Deferred period	7 years