Financial Instruments and Fair Value (Tables)

3 Months Ended

Apr. 30, 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 condensed consolidated balance sheets as follows:

	As of April 30, 2021
	Amortized Cost		Unrealized Gains		Unrealized Losses			Fair Value
	(in thousands)
Money market funds	$	2,342	$	—	$	—		$	2,342
Commercial paper		64,978		—		—			64,978
Corporate bonds		99,950		665		(31	)		100,584
Asset-backed securities		17,000		105		(7	)		17,098
U.S. government securities		29,799		62		(2	)		29,859
Total cash equivalents and marketable debt securities	$	214,069	$	832	$	(40	)	$	214,861
	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 April 30, 2021, there were no debt securities with unrealized losses for more than twelve months.

	As of
	April 30, 2021		January 31, 2021
	(in thousands)
Included in cash equivalents	$	6,841	$	15,368
Included in marketable debt securities		208,020		199,434
Total cash equivalents and marketable debt securities	$	214,861	$	214,802

Summary of Contractual Maturities of Investments

The contractual maturities of the investments at April 30, 2021 and January 31, 2021 were as follows:

	As of
	April 30, 2021		January 31, 2021
	(in thousands)
Due within one year	$	134,814	$	135,899
Due within one to three years		80,047		78,903
Total cash equivalents and marketable debt securities	$	214,861	$	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 April 30, 2021 and January 31, 2021, respectively:

	As of April 30, 2021
	Total		Level 1		Level 2		Level 3
	(in thousands)
Money market funds	$	2,342	$	2,342	$	—	$	—
Commercial paper		64,978		—		64,978		—
Corporate bonds		100,584		—		100,584		—
Asset-backed securities		17,098		—		17,098		—
U.S. government securities		29,859		—		29,859		—
Total cash equivalents and marketable debt securities	$	214,861	$	2,342	$	212,519	$	—
	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	$	—