Cash, Cash Equivalents and Marketable Securities

6 Months Ended

Jun. 30, 2012

Cash, Cash Equivalents and Marketable Securities

Cash, Cash Equivalents and Marketable Securities

(3) Cash, Cash Equivalents and Marketable Securities

A summary of cash, cash equivalents and available-for-sale marketable securities held by the Company as of June 30, 2012 and December 31, 2011 was as follows:

	June 30, 2012
	Cost		Unrealized gains		Unrealized losses		Fair value
	(in thousands)
Cash and cash equivalents:
Cash and money market funds (Level 1)	$	23,095	$	—	$	—	$	23,095
Corporate debt securities due within 3 months of date of purchase (Level 2)	2,498		—		—		2,498
Total cash and cash equivalents	$	25,593	$	—	$	—	$	25,593
Marketable securities:
Corporate debt securities due within 1 year of date of purchase (Level 2)	19,059		4		—		19,063
Total cash, cash equivalents and marketable securities	$	44,652	$	4	$	—	$	44,656

	December 31, 2011
	Cost		Unrealized gains		Unrealized losses		Fair value
	(in thousands)
Cash and cash equivalents:
Cash and money market funds (Level 1)	$	25,326	$	—	$	—	$	25,326
Government-sponsored entities and corporate debt securities due within 3 months of date of purchase (Level 2)	4,749		—		—		4,749
Total cash and cash equivalents	$	30,075	$	—	$	—	$	30,075
Marketable securities:
Corporate debt securities due within 1 year of date of purchase (Level 2)	9,647		3		—		9,650
Total cash, cash equivalents and marketable securities	$	39,722	$	3	$	—	$	39,725