Fair Value Measurements (Tables)

12 Months Ended

Jan. 31, 2021

Fair Value Disclosures [Abstract]

Summary of Financial Assets Subject to Fair Value

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

	January 31, 2021
	Level 1		Level 2		Level 3		Total
Cash equivalents:
Money market funds	$	256,861	$	—	$	—	$	256,861
Total cash equivalents	$	256,861	$	—	$	—	$	256,861
	January 31, 2020
	Level 1		Level 2		Level 3		Total
Cash equivalents:
Money market funds	$	43,558	$	—	$	—	$	43,558
Certificates of deposit		—		20,000		—		20,000
Total cash equivalents	$	43,558	$	20,000	$	—	$	63,558