Financial Instruments and Fair Value (Tables)

12 Months Ended

Jan. 31, 2020

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, 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
	As of January 31, 2019
	Amortized Cost		Unrealized Gains		Unrealized Losses			Fair Value
	(in thousands)
Money market funds	$	8,914	$	—	$	—		$	8,914
Certificates of Deposit		7,012		—		—			7,012
Commercial paper		68,233		—		—			68,233
Corporate bonds		87,250		170		(60	)		87,360
Asset-backed securities		11,607		3		(6	)		11,604
U.S. government securities		21,993		3		(13	)		21,983
Total cash equivalents and marketable debt securities	$	205,009	$	176	$	(79	)	$	205,106

Schedule of Cash Equivalents and Marketable Debt Securities

	As of
	January 31, 2020		January 31, 2019
	(in thousands)
Included in cash equivalents	$	37,736	$	40,245
Included in marketable debt securities		173,345		164,861
Total cash equivalents and marketable debt securities	$	211,081	$	205,106

Summary of Contractual Maturities of Investments

The contractual maturities of the investments at January 31, 2020 and 2019 were as follows:

	As of
	January 31, 2020		January 31, 2019
	(in thousands)
Due within one year	$	146,267	$	151,991
Due within one to three years		64,814		53,115
Total cash equivalents and marketable debt securities	$	211,081	$	205,106

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, 2020 and 2019, respectively:

	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	$	—
	As of January 31, 2019
	Total		Level 1		Level 2		Level 3
	(in thousands)
Money market funds	$	8,914	$	8,914	$	—	$	—
Certificates of Deposit		7,012		7,012
Commercial paper		68,233		—		68,233		—
Corporate bonds		87,360		—		87,360		—
Asset-backed securities		11,604		—		11,604		—
U.S. government securities		21,983		—		21,983		—
Total cash equivalents and marketable debt securities	$	205,106	$	15,926	$	189,180	$	—