Cash, Cash Equivalents and Marketable Securities

9 Months Ended

Sep. 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 September 30, 2012 and December 31, 2011 was as follows:

	September 30, 2012
	Cost		Unrealized gains		Unrealized losses		Fair value
	(in thousands)
Cash and cash equivalents:
Cash and money market funds (Level 1)	$	23,194	$	—	$	—	$	23,194
Corporate debt securities due within 3 months of date of purchase (Level 2)	6,248		—		—		6,248
Total cash and cash equivalents	$	29,442	$	—	$	—	$	29,442
Marketable securities (due within 1 year of date of purchase):
Corporate debt securities (Level 2)	23,191		7		—		23,198
Government-sponsored entities (Level 2)	2,498		1		—		2,499
Total marketable securities	25,689		8		—		25,697
Total cash, cash equivalents and marketable securities	$	55,131	$	8	$	—	$	55,139

	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