MARKETABLE SECURITIES

12 Months Ended

Dec. 31, 2011

MARKETABLE SECURITIES

MARKETABLE SECURITIES

(5) MARKETABLE SECURITIES

        A summary of marketable securities is shown below:

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
	(In thousands)
December 31, 2011
Marketable securities
U.S. government and municipal obligations
Maturing in one year or less	$	19,993	$	20	$	—	$	20,013
Maturing after one year through three years		10,808		122		6		10,924
Total U.S. government and municipal obligations	$	30,801	$	142	$	6	$	30,937
Corporate debt securities
Maturing in one year or less	$	5,817	$	3	$	4	$	5,816
Maturing after one year through three years		4,730		2		72		4,660
Total corporate debt securities	$	10,547	$	5	$	76	$	10,476
Total marketable securities	$	41,348	$	147	$	82	$	41,413

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
	(In thousands)
December 31, 2010
Marketable securities
U.S. government and municipal obligations
Maturing in one year or less	$	14,836	$	35	$	—	$	14,871
Maturing after one year through three years		11,428		103		—		11,531
Total U.S. government and municipal obligations	$	26,264	$	138	$	—	$	26,402
Corporate debt securities
Maturing in one year or less	$	11,798	$	18	$	2	$	11,814
Maturing after one year through three years		1,594		1		—		1,595
Total corporate debt securities	$	13,392	$	19	$	2	$	13,409
Total marketable securities	$	39,656	$	157	$	2	$	39,811

        The marketable securities held by the Company were high investment grade and there were no marketable securities that the Company considered to be other-than-temporarily impaired as of December 31, 2011.