Financial Instruments and Fair Value (Tables)

9 Months Ended

Oct. 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 condensed consolidated balance sheets as follows:

	As of October 31, 2020
	Amortized Cost		Unrealized Gains		Unrealized Losses			Fair Value
	(in thousands)
Money market funds	$	2,384	$	—	$	—		$	2,384
Commercial paper		66,744		—		—			66,744
Corporate bonds		101,102		1,093		(21	)		102,174
Asset-backed securities		16,391		212		—			16,603
U.S. government securities		26,426		79		—			26,505
Total cash equivalents and marketable debt securities	$	213,047	$	1,384	$	(21	)	$	214,410
	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 Unrealized Losses Were In Continuous Position In Less Than Twelve Months

          As of October 31, 2020, there were no debt securities with unrealized losses for more than twelve months.

	As of
	October 31, 2020		January 31, 2020
	(in thousands)
Included in cash equivalents	$	16,281	$	37,736
Included in marketable debt securities		198,129		173,345
Total cash equivalents and marketable debt securities	$	214,410	$	211,081

Summary of Contractual Maturities of Investments

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

	As of
	October 31, 2020		January 31, 2020
	(in thousands)
Due within one year	$	143,012	$	146,267
Due within one to three years		71,398		64,814
Total cash equivalents and marketable debt securities	$	214,410	$	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 October 31, 2020 and January 31, 2020, respectively:

	As of October 31, 2020
	Total		Level 1		Level 2		Level 3
	(in thousands)
Money market funds	$	2,384	$	2,384	$	—	$	—
Commercial paper	$	66,744		—		66,744		—
Corporate bonds	$	102,174		—		102,174		—
Asset-backed securities	$	16,603		—		16,603		—
U.S. government securities	$	26,505		—		26,505		—
Total cash equivalents and marketable debt securities	$	214,410	$	2,384	$	212,026	$	—
	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	$	—