Marketable Securities (Tables)

3 Months Ended

Apr. 30, 2023

Investments, Debt and Equity Securities [Abstract]

Schedule of Marketable Securities

The following is a summary of our marketable securities (in thousands): 

	As of April 30, 2023
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Commercial paper	$	63,814	$	—	$	—	$	63,814
Treasury bills and U.S. government securities	370,011		—		(379)		369,632
Corporate bonds	24,968		—		(35)		24,933
Municipal bonds	3,767		—		(36)		3,731
Agency bonds	12,697		—		(26)		12,671
Total marketable securities	$	475,257	$	—	$	(476)	$	474,781

	As of January 31, 2023
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Commercial paper	$	62,470	$	—	$	—	$	62,470
Treasury bills and U.S. government securities (1)	234,848		—		(308)		234,540
Corporate bonds	46,684		—		(198)		46,486
Municipal bonds	6,374		—		(66)		6,308
Agency bonds	7,959		—		(47)		7,912
Total marketable securities	$	358,335	$	—	$	(619)	$	357,716
(1) Treasury bills with both amortized cost and estimated fair value of $10.0 million are included in cash and cash equivalents due to their original maturity of three months or less.