Financial Instruments and Fair Value (Tables)

12 Months Ended

Jan. 31, 2021

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 as follows:

	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
	As of January 31, 2020
	Amortized Cost		Unrealized Gains		Unrealized Losses			Fair Value
	(in thousands)
Money market funds	$	8,284	$	—	$	—		$	8,284
Commercial paper		63,390		—		—			63,390
Corporate bonds		95,053		653		—			95,706
Asset-backed securities		23,062		69		(2	)		23,129
U.S. government securities		20,524		48		—			20,572
Total cash equivalents and marketable debt securities	$	210,313	$	770	$	(2	)	$	211,081

Schedule of Cash Equivalents and Marketable Debt Securities

As of January 31, 2021, there were no debt securities with unrealized losses for more than twelve months.          

	As of
	January 31, 2021		January 31, 2020
	(in thousands)
Included in cash equivalents	$	15,368	$	37,736
Included in marketable debt securities		199,434		173,345
Total cash equivalents and marketable debt securities	$	214,802	$	211,081

Summary of Contractual Maturities of Investments

The contractual maturities of the investments at January 31, 2021 and 2020 were as follows:

	As of
	January 31, 2021		January 31, 2020
	(in thousands)
Due within one year	$	135,899	$	146,267
Due within one to three years		78,903		64,814
Total cash equivalents and marketable debt securities	$	214,802	$	211,081

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, 2021 and 2020, respectively:

	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	$	—
	As of January 31, 2020
	Total		Level 1		Level 2		Level 3
	(in thousands)
Money market funds	$	8,284	$	8,284	$	—	$	—
Commercial paper		63,390		—		63,390		—
Corporate bonds		95,706		—		95,706		—
Asset-backed securities		23,129		—		23,129		—
U.S. government securities		20,572		—		20,572		—
Total cash equivalents and marketable debt securities	$	211,081	$	8,284	$	202,797	$	—