Financial Instruments and Fair Value (Tables)

9 Months Ended

Oct. 31, 2015

Investments All Other Investments [Abstract]

Schedule of Available-for-Sale Securities at Fair Value

The following table summarizes the investments as of October 31, 2015 and January 31, 2015:

	As of October 31, 2015
	AmortizedCost		UnrealizedGains		Unrealized Losses			Fair Value
	(in thousands)
Money market funds	$	41	$	—	$	—		$	41
Commercial paper		2,145		—		—			2,145
Corporate bonds		28,549		6		(17	)		28,538
Asset-backed securities		4,596		—		(1	)		4,595
U.S. government securities		2,911		—		(3	)		2,908
Agency bonds		2,069		—		—			2,069
Total cash equivalents and marketable securities	$	40,311	$	6	$	(21	)	$	40,296

	As of January 31, 2015
	AmortizedCost		Unrealized Gains		Unrealized Losses			Fair Value
	(in thousands)
Money market funds	$	2,427	$	—	$	—		$	2,427
Commercial paper		1,497		—		—			1,497
Corporate bonds		32,356		9		(10	)		32,355
Asset-backed securities		3,851		—		—			3,851
Total cash equivalents and marketable securities	$	40,131	$	9	$	(10	)	$	40,130

Schedule of Cash Equivalents and Marketable Securities

	As of
	October 31,2015		January31,2015
	(in thousands)
Included in cash equivalents	$	41	$	2,427
Included in marketable securities		40,255		37,703
Total cash equivalents and marketable securities	$	40,296	$	40,130

Summary of Contractual Maturities of Investments

The contractual maturities of the investments at October 31, 2015 and January 31, 2015 were as follows:

	As of
	October 31,2015		January31,2015
	(in thousands)
Due within one year	$	30,540	$	37,559
Due within one to two years		9,756		2,571
Total cash equivalents and marketable securities	$	40,296	$	40,130

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, 2015 and January 31, 2015:

	As of October 31, 2015
	Total		Level 1		Level 2		Level 3
	(in thousands)
Money market funds	$	41	$	41	$	—	$	—
Commercial paper		2,145		—		2,145		—
Corporate bonds		28,538		—		28,538		—
Asset-backed securities		4,595		—		4,595		—
U.S. government securities		2,908		—		2,908		—
Agency bonds		2,069		—		2,069		—
Total cash equivalents and marketable securities	$	40,296	$	41	$	40,255	$	—

	As of January 31, 2015
	Total		Level 1		Level 2		Level 3
	(in thousands)
Money market funds	$	2,427	$	2,427	$	—	$	—
Commercial paper		1,497		—		1,497		—
Corporate bonds		32,355		—		32,355		—
Asset-backed securities		3,851		—		3,851		—
Total cash equivalents and marketable securities	$	40,130	$	2,427	$	37,703	$	—