Common Stock Common Stock (Preferred Stock Issuance) (Details) (USD $)	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Common Stock (Preferred Stock) [Abstract]
Depositary shares issued	6,000,000
Preferred stock, shares issued	6,000		0
Preferred stock, par value	$ 1.00		$ 1
Preferred Stock, Liquidation Preference, Value	$ 150,000,000
Preferred Stock, Liquidation Preference Per Share	$ 25
Proceeds from Issuance of Preferred Stock and Preference Stock	$ 144,816,000	$ 0