Income Taxes - Provision for Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2023	Apr. 30, 2022
Income Tax Disclosure [Abstract]
Income before provision for income taxes	$ 43,230	$ 143,672
Provision for income taxes	$ 27,786	$ 30,014
Effective tax rate	64.30%	20.90%