Marketable Securities (Tables)

9 Months Ended

Sep. 30, 2013

Marketable Securities [Abstract]

Schedule Of Marketable Securities

	September 30, 2013
(In thousands)		Cost		Unrealized Gains		Unrealized Losses		Fair Value
Short-Term
U.S. government and agency obligations	$	5,965	$	9	$	—	$	5,974
Corporate debt securities and certificates of deposit		1,825		2		—		1,827
Marketable securities – short-term	$	7,790	$	11	$	—	$	7,801
Long-Term
U.S. government and agency obligations	$	6,752	$	12	$	(2)	$	6,762
Corporate debt securities and certificates of deposit		3,004		4		(5)		3,003
Asset backed securities		1,623		1		—		1,624
Equity security		42		14		—		56
Marketable securities – long-term	$	11,421	$	31	$	(7)	$	11,445

	December 31, 2012
(In thousands)		Cost		Unrealized Gains		Unrealized Losses		Fair Value
Short-Term
U.S. government and agency obligations	$	7,358	$	10	$	(35)	$	7,333
Corporate debt securities and certificates of deposit		4,100		5		—		4,105
Marketable securities – short-term	$	11,458	$	15	$	(35)	$	11,438
Long-Term
U.S. government and agency obligations	$	9,033	$	23	$	(23)	$	9,033
Corporate debt securities and certificates of deposit		1,192		4		(1)		1,195
Asset back securities		165		—		—		165
Equity security		42		—		—		42
Marketable securities – long-term	$	10,432	$	27	$	(24)	$	10,435

Schedule Of Marketable Securities Classified As Cash Equivalents

	September 30, 2013
(In thousands)		Cost		Unrealized Gains		Unrealized Losses		Recorded Basis
Corporate debt securities and certificates of deposit	$	886	$	—	$	—	$	886
	$	886	$	—	$	—	$	886

	December 31, 2012
(In thousands)		Cost		Unrealized Gains		Unrealized Losses		Recorded Basis
Corporate debt securities and certificates of deposit	$	2,824	$	—	$	—	$	2,824
	$	2,824	$	—	$	—	$	2,824