Stock-Based Compensation Plans and Employee Benefits (Restricted Stock Units Activity) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Number of Shares
Vested (in shares)	(1,678,961)
Restricted stock units
Number of Shares
Non-vested, beginning balance (in shares)	5,276,000
Granted (in shares)	795,000
Vested (in shares)	(3,271,000)
Forfeited (in shares)	(21,000)
Non-vested, ending balance (in shares)	2,779,000
Weighted Average Grant Date Fair Value Per Share
Non-vested, beginning balance, Weighted Average Grant Date Fair Value (in dollars per share)	$ 5.24
Granted, Weighted Average Grant Date Fair Value (in dollars per share)	$ 11.88
Vested, Weighted Average Grant Date Fair Value (in dollars per share)	$ 6.33
Forfeited, Weighted Average Grant Date Fair Value (in dollars per share)	$ 4.94
Non-vested, ending balance, Weighted Average Grant Date Fair Value (in dollars per share)	$ 5.85
Aggregate Intrinsic Value	$ 39,659	$ 43,000
Employees | Restricted stock units
Number of Shares
Vested (in shares)	(3,271,272)
Employees | Restricted Stock Units Amended Units Vesting on January 1, 2013
Number of Shares
Vested (in shares)	(1,719,304)