2. MARKETABLE SECURITIES

We apply the provisions of the Fair Value Measurements and Disclosures Topic to our financial assets recorded at fair value, which consists of available-for-sale marketable securities. Level 1 inputs, the highest priority, are quoted prices in active markets for identical assets are used by us to estimate the fair value of our available-for-sale marketable securities.

The historical cost and estimated fair value of the available-for-sale marketable securities held by us are as follows:


	As of September 30, 2011									As of December 31, 2010
								Fair								Fair
	Historical		Gross Unrealized					Market		Historical		Gross Unrealized				Market
(In thousands)	Cost		Gains		Losses			Value		Cost		Gains		Losses		Value
			(Unaudited)
Equity securities	$	922	$	—	$	(107	)	$	815	$	1,800	$	148	$	—	$	1,948

During the three and nine month periods ended September 30, 2011, we sold $0.9 million of marketable securities and recognized a gain on sale of $42,000. There were no sales of marketable equity securities, or other-than-temporary impairments recorded, during the three and nine month periods ended September 30, 2010.