Financial Instruments and Fair Value (Tables)

9 Months Ended

Oct. 31, 2018

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, 2018
	AmortizedCost		UnrealizedGains		Unrealized Losses			Fair Value
	(in thousands)
Money market funds	$	9,472	$	—	$	—		$	9,472
Certificates of Deposit		6,004		—		—			6,004
Commercial paper		87,756		—		—			87,756
Corporate bonds		70,169		1		(175	)		69,995
Asset-backed securities		9,547		—		(9	)		9,538
U.S. government securities		20,681		—		(2	)		20,679
Total cash equivalents and marketable securities	$	203,629	$	1	$	(186	)	$	203,444
	As of January 31, 2018
	AmortizedCost		Unrealized Gains		Unrealized Losses			Fair Value
	(in thousands)
Money market funds	$	13,788	$	—	$	—		$	13,788
Commercial paper		5,480		—		—			5,480
Corporate bonds		53,175		—		(196	)		52,979
Asset-backed securities		11,048		—		(44	)		11,004
U.S. government securities		18,495		—		(39	)		18,456
Total cash equivalents and marketable securities	$	101,986	$	—	$	(279	)	$	101,707

Schedule of Cash Equivalents and Marketable Securities

	As of
	October 31, 2018		January31,2018
	(in thousands)
Included in cash equivalents	$	67,165	$	13,788
Included in marketable securities		136,279		87,919
Total cash equivalents and marketable securities	$	203,444	$	101,707

Summary of Contractual Maturities of Investments

The contractual maturities of the investments at October 31, 2018 and January 31, 2018 were as follows:

	As of
	October 31, 2018		January31,2018
	(in thousands)
Due within one year	$	171,284	$	63,476
Due within one to three years		32,160		38,231
Total cash equivalents and marketable securities	$	203,444	$	101,707

Schedule of Fair Value of Financial Instruments Measured on Recurring Basis

The following table presents the fair value of the financial instruments measured on a recurring basis as of October 31, 2018 and January 31, 2018:

	As of October 31, 2018
	Total		Level 1		Level 2		Level 3
	(in thousands)
Money market funds	$	9,472	$	9,472	$	—	$	—
Certificates of Deposit		6,004		6,004
Commercial paper		87,756		—		87,756		—
Corporate bonds		69,995		—		69,995		—
Asset-backed securities		9,538		—		9,538		—
U.S. government securities		20,679		—		20,679		—
Total cash equivalents and marketable securities	$	203,444	$	15,476	$	187,968	$	—
	As of January 31, 2018
	Total		Level 1		Level 2		Level 3
	(in thousands)
Money market funds	$	13,788	$	13,788	$	—	$	—
Commercial paper		5,480		—		5,480		—
Corporate bonds		52,979		—		52,979		—
Asset-backed securities		11,004		—		11,004		—
U.S. government securities		18,456		—		18,456		—
Total cash equivalents and marketable securities	$	101,707	$	13,788	$	87,919	$	—