Short-term Investments

12 Months Ended

Jan. 31, 2016

Investments Debt And Equity Securities [Abstract]

Short-term Investments

4. SHORT-TERM INVESTMENTS

Short-term investments consisted of the following (in thousands):

	As of January 31, 2016
	Amortized Cost		Unrealized Losses			Unrealized Gains		Fair Value
Corporate debt securities	$	7,851	$	(6	)	$	—	$	7,845
Commercial paper		4,985					1		4,986
U.S. agency securities		7,661					5		7,666
U.S. government securities		7,477					17		7,494
Total short-term investments	$	27,974	$	(6	)	$	23	$	27,991

The Company did not have any gross realized gains and gross realized losses for the years ended January 31, 2016, 2015 and 2014.

The cost basis and fair value of the short-term investments by contractual maturity consist of the following (in thousands):

	As of January 31, 2016
	Amortized Value		Fair Value
One year or less	$	19,143	$	19,145
Over one year and less than two years		8,831		8,846
Total	$	27,974	$	27,991

Prior to fiscal 2016 the company held all its cash in cash and money market funds.

Investments in an unrealized loss position consisted of the following (in thousands):

	As of January 31, 2016
	Fair Value		Unrealized Losses
Corporate debt securities	$	7,845	$	(6	)

The Company reviews the individual securities in its portfolio to determine whether a decline in a security’s fair value below the amortized cost basis is other-than-temporary. The Company determined that as of January 31, 2016 and 2015 there were no investments in its portfolio that were other-than-temporarily impaired. The Company does not intend to sell any of these investments, and it is not more likely than not that the Company would be required to sell these investments before recovery of their amortized cost basis, which may be at maturity.