Financial Instruments and Fair Value (Tables)

3 Months Ended

Apr. 30, 2015

Investments All Other Investments [Abstract]

Schedule of Available-for-Sale Securities at Fair Value

The following table summarizes the investments as of April 30, 2015 and January 31, 2015:

	As of April 30, 2015
	AmortizedCost		UnrealizedGains		Unrealized Losses			Fair Value
	(in thousands)
Money market funds	$	1,236	$	—	$	—		$	1,236
Commercial paper		1,499		—		—			1,499
Corporate bonds		32,560		2		(18	)		32,544
Asset-backed securities		2,889		—		—			2,889
U.S. government securities		999		—		—			999
Agency bonds		1,004		—		(1	)		1,003
Total cash equivalents and marketable securities	$	40,187	$	2	$	(19	)	$	40,170

	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
	April30,2015		January31,2015
	(in thousands)
Included in cash equivalents	$	2,253	$	2,427
Included in marketable securities		37,917		37,703
Total cash equivalents and marketable securities	$	40,170	$	40,130

Summary of Contractual Maturities of Investments

The contractual maturities of the investments at April 30, 2015 and January 31, 2015 were as follows:

	As of
	April30,2015		January31,2015
	(in thousands)
Due within one year	$	33,672	$	37,559
Due within one to two years		6,498		2,571
Total cash equivalents and marketable securities	$	40,170	$	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 April 30, 2015 and January 31, 2015:

	As of April 30, 2015
	Total		Level 1		Level 2		Level 3
	(in thousands)
Money market funds	$	1,236	$	1,236	$	—	$	—
Commercial paper		1,499		—		1,499		—
Corporate bonds		32,544		—		32,544		—
Asset-backed securities		2,889		—		2,889		—
U.S. government securities		999		—		999		—
Agency bonds		1,003		—		1,003		—
Total cash equivalents and marketable securities	$	40,170	$	1,236	$	38,934	$	—

	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	$	—