Shareholders' Equity (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2012	Sep. 19, 2012	Dec. 31, 2011
Equity [Abstract]
Preferred Stock, Shares Authorized	10,000,000	10,000,000		10,000,000
Common Stock, Shares Authorized	151,515,151	151,515,151		151,515,151
Common Stock, Shares Outstanding	62,207,529	62,207,529		62,057,645
Common Stock, Shares, Issued	62,176,628	62,176,628		62,002,884
Common Stock, Dividends, Per Share, Cash Paid	$ 0.35	$ 0.80
Dividends, Common Stock, Cash		$ (49,743)
Class of Warrant or Right, Number of Securities Called by Warrants or Rights	2,749,044	2,749,044	97,541	2,625,000
Class of Warrant or Right, Exercise Price of Warrants or Rights	13.86	13.86		14.52