Earnings Per Share (Details) (USD $) Share data in Millions, unless otherwise specified	1 Months Ended	11 Months Ended	12 Months Ended
	Nov. 30, 2011	Sep. 30, 2012	Oct. 15, 2013	Dec. 31, 2012	Dec. 31, 2011
Earnings Per Share [Abstract]
Stock Repurchase Program, Authorized Amount	$ 75,000,000		$ 25,000,000
Stock Repurchased and Retired During Period, Shares		6.4
Stock Repurchased and Retired During Period, Value		$ 75,000,000		$ 57,118,000	$ 17,895,000