v2.4.0.6
Consolidated Statements Of Changes In Shareholders' Equity (Parenthetical) (USD $)
3 Months Ended
Mar. 31, 2012
Mar. 31, 2011
Common stock dividends per share, declared $ 0.13 $ 0.10
Series A 3% Preferred Stock [Member]
   
Preferred stock dividends per share, declared $ 0.75 $ 0.75
Series A Preferred Stock [Member]
   
Preferred stock dividends per share, declared   $ 53.24
Series B-1 8.48% Preferred Stock [Member]
   
Preferred stock dividends per share, declared $ 2.12 $ 2.12