Marketable Securities (Tables)

6 Months Ended

Jun. 30, 2013

Marketable Securities [Abstract]

Schedule Of Marketable Securities

	June 30, 2013
(In thousands)		Cost		Unrealized Gains		Unrealized Losses		Fair Value
Short-Term
U.S. government and agency obligations	$	7,917	$	10	$	—	$	7,927
Corporate debt securities and certificates of deposit		2,703		3		—		2,706
Marketable securities – short-term	$	10,620	$	13	$	—	$	10,633
Long-Term
U.S. government and agency obligations	$	6,936	$	9	$	(6)	$	6,939
Corporate debt securities and certificates of deposit		2,306		2		(7)		2,301
Asset backed securities		750		—		(1)		749
Equity security		42		1		—		43
Marketable securities – long-term	$	10,034	$	12	$	(14)	$	10,032

	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

	June 30, 2013
(In thousands)		Cost		Unrealized Gains		Unrealized Losses		Recorded Basis
Corporate debt securities and certificates of deposit		562		—		—		562
	$	562	$	—	$	—	$	562

	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