Stock-Based Compensation (Details) (USD $)	3 Months Ended	9 Months Ended		3 Months Ended				9 Months Ended		3 Months Ended						9 Months Ended		3 Months Ended		1 Months Ended
	Sep. 30, 2012	Sep. 30, 2012	Sep. 30, 2012 Employee Stock Option Plan and Restricted Stock Units RSU [Member] Performance-conditioned awards	Sep. 30, 2012 Stock Options Year	Jun. 30, 2012 Stock Options Year	Mar. 31, 2012 Stock Options Year	Sep. 30, 2011 Stock Options	Sep. 30, 2012 Stock Options Year	Sep. 30, 2011 Stock Options	Sep. 30, 2012 Stock Options Minimum	Sep. 30, 2012 Stock Options Maximum	Sep. 30, 2012 Restricted Stock Units	Jun. 30, 2012 Restricted Stock Units	Mar. 31, 2012 Restricted Stock Units	Sep. 30, 2011 Restricted Stock Units	Sep. 30, 2012 Restricted Stock Units Year	Sep. 30, 2011 Restricted Stock Units	Sep. 30, 2012 Restricted Stock Units Minimum	Sep. 30, 2012 Restricted Stock Units Maximum	Feb. 21, 2012 Restricted Stock Units Performance-conditioned awards	Sep. 30, 2012 Stock Compensation Plan [Member]
Share-based compensation arrangement by share-based payment award
Vesting period (in years)										four	five							four	five	four
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Date			P10Y
Common stock authorized for awards under 2003 Incentive Compensation Plan																					13,500,000
Shares available for grant (in shares)																				494,000
Portion of awards vesting each period (as a percent)																				25.00%
Number of options
Options outstanding as of December 31, 2011 (in shares)				3,874,000	3,874,000	3,868,000		3,868,000
Granted (in shares)				10,000	0	10,000
Exercised (in shares)				0	0	(4,000)
Cancelled (in shares)				0	0	0
Options outstanding as of March 31, 2012 (in shares)				3,884,000	3,874,000	3,874,000		3,884,000
Options exercisable as of March 31, 2012 (in shares)				938,000				938,000
Weighted average remaining contract term
Options outstanding as of December 31, 2011 - weighted average remaining contract term (in years)				7.9	8.1	8.3		8.3
Options outstanding as of March 31, 2011 - weighted average remaining contract term (in years)				7.6	7.9	8.1		7.6
Options exercisable as of March 31, 2012 - weighted average remaining contract term (in years)				5.5
Weighted average exercise price per share
Weighted average exercise price of options outstanding as of December 31, 2011 (in dollars per share)				$ 9.68	$ 9.68	$ 9.67		$ 9.67
Exercise price of options granted (in dollars per share)				$ 7.27	$ 0.00	$ 11.10		$ 7.27
Exercise price (in dollars per share)				$ 0.00	$ 0.00	$ 6.16		$ 0.00
Weighted average exercise price of options outstanding as of March 31, 2012 (in dollars per share)				$ 9.67	$ 9.68	$ 9.68		$ 9.67
Cancelled - weighted average exercise price (in dollars per share)				$ 0.00	$ 0.00	$ 0.00		$ 0.00
Options exercisable - weighted average exercise price (in dollars per share)	$ 12.42	$ 12.42
Aggregate intrinsic value
Aggregate intrinsic value of options outstanding as of December 31, 2011 (in dollars)				$ 1,050,000	$ 10,735,000	$ 3,876,000		$ 3,876,000
Aggregate intrinsic value of options exercised (in dollars)				0	0	20,000
Aggregate intrinsic value of options outstanding as of March 31, 2012 (in dollars)				699,000	1,050,000	10,735,000		699,000
Options Exercisable - aggregate intrinsic value (in dollars)				317,000				317,000
Weighted-average grant date fair value of options granted (in dollars per share)	$ 3.80				$ 5.81
Compensation expense, tax benefit and unearned compensation
Stock-based compensation expense recognized (in dollars)				900,000			1,500,000	2,900,000	4,900,000			4,900,000			4,100,000	14,500,000	10,300,000
Tax benefit recognized related to stock based compensation expenses (in dollars)				340,000			600,000	1,100,000	1,800,000			1,860,000			1,600,000	5,520,000	3,900,000
Unearned compensation expense that will be amortized (in dollars)				8,900,000				8,900,000				43,000				43,000
Weighted-average period of amortization (in years)								2								2
Number of restricted shares
Unvested units as of December 31, 2011 (in shares)												5,684,000	5,625,000	4,771,000		4,771,000
Granted (in shares)					0							17,000	130,000	1,534,000
Vested (in shares)												(483,000)	(41,000)	(660,000)
Cancelled (in shares)												(2,000)	(30,000)	(20,000)
Unvested units as of March 31, 2012 (in shares)												5,216,000	5,684,000	5,625,000		5,216,000
Weighted Average Grant Date Fair Value
Unvested units as of December 31, 2011 (in dollars per share)												$ 10.55	$ 10.66	$ 10.49		$ 10.49
Granted (in dollars per share)												$ 7.44	$ 8.80	$ 12.62
Vested (in dollars per share)												$ 8.72	$ 19.91	$ 13.92
Cancelled (in dollars per share)												$ 12.62	$ 11.66	$ 12.02		$ 12.62
Unvested units as of March 31, 2012 (in dollars per share)												$ 10.70	$ 10.55	$ 10.66		$ 10.70
Other Incentive Compensation
Asia Pacific Plan Cap		35,000,000
Asia Pacific Plan cap if liquidated before December 31, 2014		50,000,000
Initial public offering criteria		20.00%
Liquidation criteria, percentage acquired by third party		20.00%
Other long-term liability related to Asia Pacific Plan	$ 2,652,000	$ 2,652,000