Condensed Consolidated Statements Of Shareholders' Equity (Parenthetical) (USD $)	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Dividends declared on common stock, per shares	$ 0.25	$ 0.11
Subsidiary preferred stock dividends, per share		$ 0.6468
Series A Preferred Stock [Member]
Dividends declared on Series A preferred stock, per share	$ 63.75	$ 63.75