Equity (Tables)

12 Months Ended

Dec. 31, 2011

Preferred Stock

The following table presents information regarding the Company’s preferred stock (in thousands):

	December 31,
	2011		2010
Shares authorized		50,000		50,000
Shares outstanding at end of period
8.5% Convertible perpetual preferred stock		2,650		2,650
6.0% Convertible perpetual preferred stock		2,000		2,000
7.0% Convertible perpetual preferred stock		3,000		3,000

Common Stock

The following table presents information regarding the Company’s common stock (in thousands):

	December 31,
	2011		2010
Shares authorized		800,000		800,000
Shares outstanding at end of period		411,953		406,360
Shares held in treasury		874		470

Restricted Stock Activity

Restricted stock activity for the years ended December 31, 2009, 2010 and 2011 was as follows (shares in thousands):

	Number of Shares			Weighted- Average Grant Date Fair Value
Unvested restricted shares outstanding at December 31, 2008		2,993		$	30.71
Granted		3,531		$	8.34
Vested		(800	)	$	29.43
Forfeited / Canceled		(402	)	$	20.97
Unvested restricted shares outstanding at December 31, 2009		5,322		$	16.80
Granted(1)		6,210		$	7.87
Vested(1)		(1,613	)	$	18.28
Forfeited / Canceled		(443	)	$	12.74
Unvested restricted shares outstanding at December 31, 2010		9,476		$	10.89
Granted		8,003		$	8.95
Vested		(3,270	)	$	12.91
Forfeited / Canceled		(823	)	$	9.17
Unvested restricted shares outstanding at December 31, 2011		13,386		$	9.34

(1) Excludes 743,119 restricted shares from stock awards assumed in the Arena Acquisition. All of these awards had vested as of December 31, 2010.