Short-Term Investments

12 Months Ended

Jan. 31, 2014

Schedule Of Investments [Abstract]

Short-Term Investments

Note 3. Short-Term Investments

At January 31, 2014, short-term investments consisted of the following (in thousands):

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
Available-for-sale securities:
Corporate notes and bonds	$	10,499	$	9	$	(1	)	$	10,507
U.S. agency obligations		15,111		7		—			15,118
Total available-for-sale securities	$	25,610	$	16	$	(1	)	$	25,625

At January 31, 2013, short-term investments consisted of the following (in thousands):

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
Available-for-sale securities:
Commercial paper	$	2,097	$	—	$	—		$	2,097
Corporate notes and bonds		11,474		7		(2	)		11,479
Certificate of deposits		700		—		—			700
Total available-for-sale securities	$	14,271	$	7	$	(2	)	$	14,276

The following table summarizes the estimated fair value of our short-term investments, designated as available-for-sale and classified by the contractual maturity date of the securities as of the dates shown (in thousands):

	January 31,
	2014		2013
Due in one year	$	17,667	$	9,829
Due in greater than one year		7,958		4,447
Total	$	25,625	$	14,276

We have certain available-for-sale securities in a gross unrealized loss position, all of which have been in such position for less than twelve months. We review our debt securities classified as short-term investments on a regular basis to evaluate whether or not any security has experienced an other-than-temporary decline in fair value. We consider factors such as the length of time and extent to which the market value has been less than the cost, the financial condition and near-term prospects of the issuer and our intent to sell, or whether it is more likely than not we will be required to sell the investment before recovery of the investment’s amortized-cost basis. If we determine that an other-than-temporary decline exists in one of these securities, the respective investment would be written down to fair value. For debt securities, the portion of the write-down related to credit loss would be recognized to other income, net in our consolidated statements of comprehensive income. Any portion not related to credit loss would be included in accumulated other comprehensive income. There were no impairments considered other-than-temporary as of January 31, 2014 and 2013.

The following table shows the fair values and the gross unrealized losses of these available-for-sale securities aggregated by investment category as of January 31, 2014 (in thousands):

	Fair Value		Gross Unrealized Losses
Corporate notes and bonds	$	1,403	$	(1	)

The following table shows the fair values and the gross unrealized losses of these available-for-sale securities aggregated by investment category as of January 31, 2013 (in thousands):

	Fair Value		Gross Unrealized Losses
Corporate notes and bonds	$	3,570	$	(2	)