Common Stock Common Stock (Preferred Stock Issuance) (Details) (USD $)	0 Months Ended	9 Months Ended
	Jun. 19, 2014	Sep. 30, 2014	Sep. 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		$ 1.00
Preferred Stock, Liquidation Preference, Value		$ 150,000,000
Preferred Stock, Liquidation Preference Per Share		$ 25
Proceeds from issuance of preferred stock	$ 144,800,000	$ 144,784,000	$ 0