Cash, Cash Equivalents and Marketable Securities

9 Months Ended

Sep. 30, 2011

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, 2011 and December 31, 2010 is as follows:

	September 30, 2011
	Cost		Unrealized gains		Unrealized losses		Fair value
	(in thousands)
Cash and cash equivalents:
Cash and money market funds (Level 1)	$	19,135	$	—	$	—	$	19,135
Corporate debt securities due within 3 months of date of purchase (Level 2)	1,508		—		—		1,508
Total cash and cash equivalents	$	20,643	$	—	$	—	$	20,643
Marketable securities:
U.S. government sponsored entities due within 1 year of date of purchase (Level 2)	726		—		—		726
Corporate debt securities due within 1 year of date of purchase (Level 2)	29,290		1		—		29,291
Total marketable securities	30,016		1		—		30,017
Total cash, cash equivalents and marketable securities	$	50,659	$	1	$	—	$	50,660

	December 31, 2010
	Cost		Unrealized gains		Unrealized losses			Fair value
	(in thousands)
Cash and cash equivalents:
Cash and money market funds (Level 1)	$	25,228	$	—	$	—		$	25,228
U.S. government-sponsored entities and corporate debt securities due within 3 months of date of purchase (Level 2)	6,082		—		—			6,082
Total cash and cash equivalents	$	31,310	$	—	$	—		$	31,310
Marketable securities:
U.S. government and government sponsored entities due within 1 year of date of purchase (Level 2)	19,666		—		(3		)	19,663
Total cash, cash equivalents and marketable securities	$	50,976	$	—	$	(3	)	$	50,973