Financial Instruments and Fair Value (Tables)

12 Months Ended

Jan. 31, 2022

Investments All Other Investments [Abstract]

Schedule of Available-for-Sale Securities at Fair Value

All of the investments are classified as available-for-sale securities and reported at fair value in the consolidated balance sheets. By the end of the third quarter of fiscal year 2022, the Company fully liquidated all of the investments and reported the remaining cash equivalents as follows:

	As of January 31, 2022
	Amortized Cost		Unrealized Gains		Unrealized Losses			Fair Value
	(in thousands)
Money market funds	$	20	$	—	$	—		$	20
Commercial paper		—		—		—			—
Corporate bonds		—		—		—			—
Asset-backed securities		—		—		—			—
U.S. government securities		—		—		—			—
Total cash equivalents and marketable debt securities	$	20	$	—	$	—		$	20
	As of January 31, 2021
	Amortized Cost		Unrealized Gains		Unrealized Losses			Fair Value
	(in thousands)
Money market funds	$	171	$	—	$	—		$	171
Commercial paper		66,181		—		—			66,181
Corporate bonds		102,108		980		(7	)		103,081
Asset-backed securities		15,740		164		—			15,904
U.S. government securities		29,383		82		—			29,465
Total cash equivalents and marketable debt securities	$	213,583	$	1,226	$	(7	)	$	214,802

Schedule of Cash Equivalents and Marketable Debt Securities

	As of
	January 31, 2022		January 31, 2021
	(in thousands)
Included in cash equivalents	$	20	$	15,368
Included in marketable debt securities		—		199,434
Total cash equivalents and marketable debt securities	$	20	$	214,802

Summary of Contractual Maturities of Investments

The contractual maturities of the investments at January 31, 2022 and 2021 were as follows:

	As of
	January 31, 2022		January 31, 2021
	(in thousands)
Due within one year	$	20	$	135,899
Due within one to three years		—		78,903
Total cash equivalents and marketable debt securities	$	20	$	214,802

Schedule of Fair Value of Financial Instruments Measured on Recurring Basis

The following tables present the fair value of the financial instruments measured on a recurring basis as of January 31, 2022 and 2021, respectively:

	As of January 31, 2022
	Total		Level 1		Level 2		Level 3
	(in thousands)
Money market funds	$	20	$	20	$	—	$	—
Commercial paper		—		—		—		—
Corporate bonds		—		—		—		—
Asset-backed securities		—		—		—		—
U.S. government securities		—		—		—		—
Total cash equivalents and marketable debt securities	$	20	$	20	$	—	$	—
	As of January 31, 2021
	Total		Level 1		Level 2		Level 3
	(in thousands)
Money market funds	$	171	$	171	$	—	$	—
Commercial paper		66,181		—		66,181		—
Corporate bonds		103,081		—		103,081		—
Asset-backed securities		15,904		—		15,904		—
U.S. government securities		29,465		—		29,465		—
Total cash equivalents and marketable debt securities	$	214,802	$	171	$	214,631	$	—