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Equity Incentive Plans and Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2012

Equity Incentive Plans and Stock-Based Compensation

Shares available for grant under stock-based incentive plans

		Shares Available for Grant
Shares available as of December 31, 2011		2,812,876
Stock options granted		(1,937,002	)
Stock options forfeited		136,993
Stock options expired under former plans		(21,837	)
Nonvested equity stock and stock units granted (1)		(635,057	)
Nonvested equity stock and stock units forfeited (1)		3,342
Total available for grant as of March 31, 2012		359,315

(1) For purposes of determining the number of shares available for grant under the 2006 Plan against the maximum number of shares authorized, each restricted stock granted reduces the number of shares available for grant by 1.5 shares and each restricted stock forfeited increases shares available for grant by 1.5 shares.

Schedule of stock option activity

		Options Outstanding					Weighted
				Weighted			Average
				Average			Remaining		Aggregate
		Number of		Exercise Price			Contractual		Intrinsic
		Shares		Per Share			Term (years)		Value
		(Dollars in thousands, except per share amounts)
Outstanding as of December 31, 2011		14,587,596		$	19.73
Options granted		1,937,002		7.30
Options exercised		(11,467	)	4.67
Options forfeited		(136,993	)	17.86
Outstanding as of March 31, 2012		16,376,138		18.28			5.77		$	497
Vested or expected to vest at March 31, 2012		15,699,805		18.46			5.63		497
Options exercisable at March 31, 2012		10,806,897		20.18			4.23		497

Weighted-average assumptions for Stock Option Plans

		Three Months Ended March 31,
		2012			2011
Stock Option Plans
Expected stock price volatility		60		%	52		%
Risk free interest rate		0.7		%	2.8		%
Expected term (in years)		5.6			6.0
Weighted-average fair value of stock options granted		$	3.88		$	10.81

Activity related to nonvested equity stock and stock units

Nonvested Equity Stock and Stock Units		Shares		Weighted- Average Grant-Date Fair Value
Nonvested at December 31, 2011		763,510		$	18.02
Granted		423,371		7.28
Vested		(181,099	)	18.75
Forfeited		(2,228	)	7.31
Nonvested at March 31, 2012		1,003,554		13.38

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Tabular disclosure of the number of shares available for grant under the company plan that were outstanding at the beginning and end of the year.

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Tabular disclosure of the changes in outstanding nonvested shares.

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