Stock-Based Compensation (Non-Vested Options) (Details) (Stock Option, USD $)	12 Months Ended
	Dec. 31, 2012
Stock Option
Non-vested Options, Outstanding [Roll Forward]
Non-vested as of January 1, 2012 (Shares)	4,915,825
Granted (Shares)	35,492
Vested (Shares)	(1,959,032)
Forfeited (Shares)	(125,555)
Non-vested as of December 31, 2012 (Shares)	2,866,730
Non-vested Options, Weighted Average Exercise Price [Roll Forward]
Weighted Average Exercise Price, Non-vested as of January 1, 2012	$ 12.04
Granted (In dollars per share)	$ 0.17
Vested (In dollars per share)	$ 11.56
Forfeited (In dollars per share)	$ 11.91
Weighted Average Exercise Price, Non-vested as of December 31, 2012	$ 12.23
Share-based Compensation Arrangement by Share-based Payment Award, Options Nonvested, Grants in Period, Weighted Average Grant Date Fair Value	$ 0.17
Options Nonvested Weighted Average Grant Date Fair Value [Abstract]
Non-Vested Balance at January 1, 2012, Weighted Average Grant Date Fair Value (In dollars per share)	$ 4.86
Vested (In dollars per share)	$ 4.59
Forfeited (In dollars per share)	$ 4.84
Non-Vested Balance at December31, 2012, Weighted Average Grant Date Fair Value (In dollars per share)	$ 4.98