NOTE 5 —INVESTMENTS:

Cash, cash equivalents and short-term investments:

At December 31, 2013 and 2012, the Company held short-term investments classified as available-for-sale securities as follows:

	December 31, 2013
	Amortized Cost			Unrealized Gains		Unrealized Losses			Estimated Fair Value
	(in thousands)
Cash	$	43,164		$	—	$	—		$	43,164
Money market funds	20,000			—		—			20,000
Certificates of deposit	67,775			1		(7		)	67,769
U.S. Government and agency securities	69,859			22		(2		)	69,879
Commercial paper	33,602			9		(5		)	33,606
Corporate bonds	92,298			16		(40		)	92,274
Total investments	$	326,698		$	48	$	(54	)	$	326,692
Less amounts classified as cash and cash equivalents	(63,164		)	—		—			(63,164		)
	$	263,534		$	48	$	(54	)	$	263,528

	December 31, 2012
	Amortized Cost			Unrealized Gains		Unrealized Losses			Estimated Fair Value
	(in thousands)
Cash	$	110,148		$	—	$	—		$	110,148
Certificates of deposit	90,437			1		(7		)	90,431
U.S. Government and agency securities	115,179			9		(59		)	115,129
Commercial paper	34,977			—		(30		)	34,947
Corporate bonds	61,543			3		(84		)	61,462
Foreign government bonds	7,511			19		—			7,530
Total investments	$	419,795		$	32	$	(180	)	$	419,647
Less amounts classified as cash and cash equivalents	(117,054		)	—		—			(117,054		)
	$	302,741		$	32	$	(180	)	$	302,593

Realized gains upon the sale of marketable securities were $1.2 million and $0.9 million for the years ended December 31, 2013 and December 31, 2012, respectively. At December 31, 2013, investments with gross unrealized losses were not deemed to be other-than-temporarily impaired and the unrealized losses were recorded in OCI.

The contractual maturities of short-term investments at December 31, 2013 and December 31, 2012 were as follows:

	December 31, 2013				December 31, 2012
	Amortized Cost		Estimated Fair Value		Amortized Cost		Estimated Fair Value
	(in thousands)
Due in less than one year	$	190,172	$	190,189	$	172,941	$	172,880
Due in one to three years	73,362		73,339		129,800		129,713
	$	263,534	$	263,528	$	302,741	$	302,593

Previously reported amounts have been revised to correct for an error in the classification of debt securities due in less than one year and debt securities due in one to three years.

Investments in privately-held companies:

As of December 31, 2013, the Company held a total of $7.5 million investments in two privately-held companies and as of December 31, 2012, the Company held a $4.4 million investment in a privately-held company.