Financial Instruments and Fair Value (Tables)

6 Months Ended

Jul. 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 July 31, 2018
	AmortizedCost		UnrealizedGains		Unrealized Losses			Fair Value
	(in thousands)
Money market funds	$	21,882	$	—	$	—		$	21,882
Commercial paper		20,833		—		—			20,833
Corporate bonds		42,545		1		(163	)		42,383
Asset-backed securities		12,551		—		(49	)		12,502
U.S. government securities		4,953		—		—			4,953
Total cash equivalents and marketable securities	$	102,764	$	1	$	(212	)	$	102,553
	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
	July 31, 2018		January31,2018
	(in thousands)
Included in cash equivalents	$	21,882	$	13,788
Included in marketable securities		80,671		87,919
Total cash equivalents and marketable securities	$	102,553	$	101,707

Summary of Contractual Maturities of Investments

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

	As of
	July 31, 2018		January31,2018
	(in thousands)
Due within one year	$	100,171	$	63,476
Due within one to two years		2,382		38,231
Total cash equivalents and marketable securities	$	102,553	$	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 July 31, 2018 and January 31, 2018:

	As of July 31, 2018
	Total		Level 1		Level 2		Level 3
	(in thousands)
Money market funds	$	21,882	$	21,882	$	—	$	—
Commercial paper		20,833		—		20,833		—
Corporate bonds		42,383		—		42,383		—
Asset-backed securities		12,502		—		12,502		—
U.S. government securities		4,953		—		4,953		—
Total cash equivalents and marketable securities	$	102,553	$	21,882	$	80,671	$	—
	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	$	—