Assets and Liabilities Measured at Fair Value (Tables)

6 Months Ended

Jun. 30, 2012

Fair Value Disclosures [Abstract]

Schedule of financial assets measured at fair value, on a recurring basis

The following tables present information about our financial assets measured at fair value, on a recurring basis, as of June 30, 2012, and December 31, 2011. The tables indicate the fair value hierarchy of the valuation techniques utilized to determine such fair value. We did not have any financial liabilities measured at fair value, on a recurring basis, as of June 30, 2012, and December 31, 2011.

June 30, 2012	Level 1		Level 2		Level 3		Total
	(In thousands)
Commercial paper	$	—	$	1,200	$	—	$	1,200
Certificates of deposit	—		10,457		—		10,457
Corporate bonds/notes	9,716		—		—		9,716
Municipal bonds/notes	289		—		—		289
Agency bonds/notes	7,092		—		—		7,092
Total	$	17,097	$	11,657	$	—	$	28,754
December 31, 2011	Level 1		Level 2		Level 3		Total
	(In thousands)
Commercial paper	$	—	$	2,395	$	—	$	2,395
Certificates of deposit	—		8,326		—		8,326
Corporate bonds/notes	7,523		—		—		7,523
Agency bonds/notes	7,323		—		—		7,323
Total	$	14,846	$	10,721	$	—	$	25,567