CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2024	Apr. 30, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 216,308	$ 15,444
Other comprehensive (loss) income:
Unrealized (loss) gain on available-for-sale marketable securities, net of income tax benefit (expense) of $5,692 and $(4,674) for the three months ended April 30, 2024 and 2023, respectively	(18,553)	15,514
Comprehensive income	$ 197,755	$ 30,958