Marketable Securities

12 Months Ended

Dec. 31, 2011

Investments, Debt and Equity Securities [Abstract]

Marketable Securities

Marketable Securities

The following summarizes the Company's net investment in marketable securities as of December 31, 2011 and 2010:

	Common Stock				Preferred Stock				Total Available-for- Sale Securities
As of December 31, 2011:
Fair value	$	11,550			$	18,835			$	30,385
Amortized cost basis	28,997				38,242				67,239
Total other-than-temporary impairment recognized	23,889				31,308				55,197
Adjusted cost basis	5,108				6,934				12,042
Net gains in accumulated other comprehensive income (OCI)	6,615				11,942				18,557
Net losses in accumulated OCI	(173		)	(a)	(41		)	(b)	(214		)
As of December 31, 2010:
Fair value	$	15,117			$	19,113			$	34,230
Amortized cost basis	28,997				38,592				67,589
Total other-than-temporary impairment recognized	23,889				31,576				55,465
Adjusted cost basis	5,108				7,016				12,124
Net gains in accumulated OCI	10,009				12,097				22,106

(a) This amount represents the gross unrealized losses of one common stock security with a fair value of $765 as of December 31, 2011. This security has been in a continuous unrealized loss position for less than 12 months as of December 31, 2011.

(b) This amount represents the gross unrealized losses of one preferred stock security with a fair value of $130 as of December 31, 2011. This security has been in a continuous unrealized loss position for less than 12 months as of December 31, 2011.

The following table summarizes activity related to the Company's marketable securities for the years ended December 31, 2011, 2010 and 2009:

	Years Ended December 31,
	2011			2010		2009
Net unrealized OCI (loss) gain	$	(3,486	)	$	13,742	$	35,594
Other-than-temporary impairment	$	—		$	—	$	24,831
Net gain on sales of securities	$	277		$	4,007	$	42,870