Financial Instruments and Fair Value (Tables)

6 Months Ended

Jul. 31, 2017

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, 2017
	AmortizedCost		UnrealizedGains		Unrealized Losses			Fair Value
	(in thousands)
Money market funds	$	10,232	$	—	$	—		$	10,232
Commercial paper		6,980		—		—			6,980
Corporate bonds		48,758		3		(33	)		48,728
Asset-backed securities		13,024		—		(7	)		13,017
U.S. government securities		22,397		—		(45	)		22,352
Total cash equivalents and marketable securities	$	101,391	$	3	$	(85	)	$	101,309
	As of January 31, 2017
	AmortizedCost		Unrealized Gains		Unrealized Losses			Fair Value
	(in thousands)
Money market funds	$	8,328	$	—	$	—		$	8,328
Demand deposits		10,000		—		—			10,000
Commercial paper		4,784		—		—			4,784
Corporate bonds		42,713		6		(41	)		42,678
Asset-backed securities		11,686		1		(12	)		11,675
U.S. government securities		23,409		6		(30	)		23,385
Total cash equivalents and marketable securities	$	100,920	$	13	$	(83	)	$	100,850

Schedule of Cash Equivalents and Marketable Securities

	As of
	July 31, 2017		January31,2017
	(in thousands)
Included in cash equivalents	$	10,232	$	18,328
Included in marketable securities		91,077		82,522
Total cash equivalents and marketable securities	$	101,309	$	100,850

Summary of Contractual Maturities of Investments

The contractual maturities of the investments at July 31, 2017 and January 31, 2017 were as follows:

	As of
	July 31, 2017		January31,2017
	(in thousands)
Due within one year	$	86,791	$	76,992
Due within one to two years		14,518		23,858
Total cash equivalents and marketable securities	$	101,309	$	100,850

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, 2017 and January 31, 2017:

	As of July 31, 2017
	Total		Level 1		Level 2		Level 3
	(in thousands)
Money market funds	$	10,232	$	10,232	$	—	$	—
Commercial paper		6,980		—		6,980		—
Corporate bonds		48,728		—		48,728		—
Asset-backed securities		13,017		—		13,017		—
U.S. government securities		22,352		—		22,352		—
Total cash equivalents and marketable securities	$	101,309	$	10,232	$	91,077	$	—
	As of January 31, 2017
	Total		Level 1		Level 2		Level 3
	(in thousands)
Money market funds	$	8,328	$	8,328	$	—	$	—
Demand deposits		10,000		10,000		—		—
Commercial paper		4,784		—		4,784		—
Corporate bonds		42,678		—		42,678		—
Asset-backed securities		11,675		—		11,675		—
U.S. government securities		23,385		—		23,385		—
Total cash equivalents and marketable securities	$	100,850	$	18,328	$	82,522	$	—