Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2012

Stock-Based Compensation

Summary of stock option activity

				WEIGHTED-
		WEIGHTED-		AVERAGE	AGGREGATE
		AVERAGE		REMAINING	INTRINSIC
		EXERCISE		CONTRACTUAL	VALUE
	SHARES	PRICE		LIFE (in years)	(in thousands)
Options outstanding at January 1, 2011	3,722,656	$	33.29	2.8
Granted	781,000	16.52
Exercised	(36,398)	11.50
Forfeited	(16,292)	24.72
Options outstanding at March 31, 2011	4,450,966	$	30.55	3.0	$	661
Available for future grant	558,200
Total shares reserved at March 31, 2011	5,009,166
Options exercisable at March 31, 2011	2,908,186	$	36.29	2.3	$	440
Options outstanding at January 1, 2012	3,948,874	$	28.91	2.4
Granted	726,000	18.22
Exercised	(18,667)	14.39
Forfeited	(185,197)	21.93
Options outstanding at March 31, 2012	4,471,010	$	27.52	3.0	$	4,763
Available for future grant	2,559,240
Total shares reserved at March 31, 2012	7,030,250
Options exercisable at March 31, 2012	3,000,374	$	31.97	1.9	$	2,584

Summary of activity related to restricted stock unit awards

	2012		2011
Restricted stock units at January 1	657,825		727,317
Shares awarded	400,568		305,000
Shares vested	(294,856	)	(181,666	)
Shares forfeited	(6,667	)	(60,000	)
Restricted stock units at March 31	756,870		790,651