Condensed Consolidated Statements Of Shareholders' Equity (Parenthetical) (USD $)	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Dividends declared on common stock (in dollars per share)	$ 0.25	$ 0.15
Series A Preferred Stock [Member]
Dividends declared on preferred stock (in dollars per share)	$ 42.50	$ 42.50
Series E Preferred Stock [Member]
Dividends declared on preferred stock (in dollars per share)	$ 848.89