Fair Value of Financial Instruments (Tables)

3 Months Ended

Apr. 30, 2022

Fair Value Disclosures [Abstract]

Summary of Amortized Cost, Unrealized Gain (Loss) and Estimated Fair Value of Cash Equivalents and Short-term Investments

The amortized cost, unrealized gain (loss) and estimated fair value of marketable securities were as follows (in thousands):

	April 30, 2022
	Amortized Cost		Unrealized Gain		Unrealized Loss			Estimated Fair Value
Cash equivalents:
U.S treasury securities	$	9,999	$	—	$	—		$	9,999
Commercial paper		1,999		—		—			1,999
Money market funds		166,263		—		—			166,263
Total cash equivalents	$	178,261	$	—	$	—		$	178,261
Short-term investments:
U.S treasury securities	$	35,921	$	—	$	(24	)	$	35,897
Commercial paper		1,992		—		—			1,992
Total short-term investments	$	37,913	$	—	$	(24	)	$	37,889
Total cash equivalents and short-term investments	$	216,174	$	—	$	(24	)	$	216,150

	January 31, 2022
	Amortized Cost		Unrealized Gain		Unrealized Loss		Estimated Fair Value
Cash equivalents:
Money market funds	$	202,446	$	—	$	—	$	202,446
Total cash equivalents	$	202,446	$	—	$	—	$	202,446

Summary of Financial Assets Subject to Fair Value

Financial assets subject to the fair value disclosure requirements were as follows (in thousands):

	April 30, 2022
	Level 1		Level 2		Level 3		Total
Cash equivalents:
U.S treasury securities	$	9,999	$	—	$	—	$	9,999
Commercial paper		—		1,999		—		1,999
Money market funds		166,263		—		—		166,263
Total cash equivalents	$	176,262	$	1,999	$	—	$	178,261
Short-term investments:
U.S treasury securities	$	35,897	$	—	$	—	$	35,897
Commercial paper		—		1,992		—		1,992
Total short-term investments	$	35,897	$	1,992	$	—	$	37,889
Total cash equivalents and short-term investments	$	212,159	$	3,991	$	—	$	216,150

	January 31, 2022
	Level 1		Level 2		Level 3		Total
Cash equivalents:
Money market funds	$	202,446	$	—	$	—	$	202,446