CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2023	Jan. 31, 2022	Jan. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 103,711	$ 1,375,639	$ 672,316
Other comprehensive (loss) income:
Unrealized (loss) gain on available-for-sale marketable securities, net of tax effect of $9,834, $6,003, and $0 during the fiscal years ended January 31, 2023, 2022 and 2021, respectively	(32,483)	(18,741)	30
Comprehensive income	$ 71,228	$ 1,356,898	$ 672,346