Stock-Based Compensation and Other Employee Benefit Plans (Summary of Stock Options) (Details) (USD $) In Millions, except Share data, unless otherwise specified	0 Months Ended				3 Months Ended
	Mar. 31, 2014		Dec. 31, 2013		Mar. 31, 2014
Outstanding Stock Options, Activity [Roll Forward]
Options outstanding, vested, beginning balance					495,571
Exercised					(200,900)
Canceled/forfeited					0
Options outstanding, vested, ending balance	294,671		495,571		294,671
Outstanding Stock Options, Weighted Average Exercise Price [Roll Forward]
Weighted average exercise price, vested, beginning balance					$ 11.17
Exercised					$ 9.77
Canceled/forfeited					$ 0
Weighted average exercise price, vested, ending balance	$ 12.13		$ 11.17		$ 12.13
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Options exercisable	294,671				294,671
Options exercisable, weighted average exercise price	$ 12.13				$ 12.13
Options outstanding, vested, weighted average remaining contractual life	2 years 0 months 15 days		1 year 11 months 16 days
Options exercisable, weighted average remaining contractual life	2 years 0 months 15 days
Options outstanding, vested, aggregate intrinsic value	$ 9.2	[1]	$ 10.7	[1]	$ 9.2	[1]
Options exercisable, aggregate intrinsic value	$ 9.2	[1]			$ 9.2	[1]

[1] Amount represents the difference between the exercise price and the market price of the Company’s stock on the last trading day of the corresponding period, multiplied by the number of in-the-money options.