Income Taxes - Textuals (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2021	Oct. 31, 2020	Oct. 31, 2021	Oct. 31, 2020
Income Tax Disclosure [Abstract]
Income Tax Expense (Benefit)	$ 40,198	$ 28,430	$ 59,692	$ 8,357