CASH, CASH EQUIVALENTS AND SHORT-TERM INVESTMENTS

6 Months Ended

Jun. 30, 2014

Cash And Cash Equivalents [Abstract]

CASH, CASH EQUIVALENTS AND SHORT-TERM INVESTMENTS

5. CASH, CASH EQUIVALENTS AND SHORT-TERM INVESTMENTS

It is the Company’s policy to mitigate credit risk in its financial assets by maintaining a well-diversified portfolio that limits the amount of exposure as to maturity and investment type. The following tables summarize the Company’s cash, cash equivalents and short-term investments for each of the periods indicated:

	As of June 30, 2014
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Market Value
	(in thousands)
Cash and money market funds	$	95,504	$	—	$	—		$	95,504
Commercial paper		20,649		1		—			20,650
Government and government agency bonds		92,198		3		(23	)		92,178
Corporate bonds		71,223		5		(21	)		71,207
Total	$	279,574	$	9	$	(44	)	$	279,539
As reported:
Cash and cash equivalents		102,754		—		—			102,754
Short-term investments		176,820		9		(44	)		176,785
Total	$	279,574	$	9	$	(44	)	$	279,539

	As of December 31, 2013
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Market Value
	(in thousands)
Cash and money market funds	$	256,965	$	—	$	—	$	256,965
Total	$	256,965	$	—	$	—	$	256,965
As reported:
Cash and cash equivalents	$	256,965	$	—	$	—	$	256,965
Total	$	256,965	$	—	$	—	$	256,965