Fair Value of Financial Instruments (Tables)

9 Months Ended

Oct. 31, 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):

	October 31, 2022
	Amortized Cost		Unrealized Gain		Unrealized Loss			Estimated Fair Value
Cash equivalents:
Money market funds		176,831		—		—			176,831
Total cash equivalents	$	176,831	$	—	$	—		$	176,831
Short-term investments:
U.S. treasury securities	$	44,652	$	—	$	(85	)	$	44,567
Total short-term investments	$	44,652	$	—	$	(85	)	$	44,567
Total cash equivalents and short-term investments	$	221,483	$	—	$	(85	)	$	221,398

	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):

	October 31, 2022
	Level 1		Level 2		Level 3		Total
Cash equivalents:
Money market funds		176,831		—		—		176,831
Total cash equivalents	$	176,831	$	—	$	—	$	176,831
Short-term investments:
U.S. treasury securities	$	44,567	$	—	$	—	$	44,567
Total short-term investments	$	44,567	$	—	$	—	$	44,567
Total cash equivalents and short-term investments	$	221,398	$	—	$	—	$	221,398

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