| Mar. 31, 2010
| | Dec. 31, 2009
| 3 Months Ended
Mar. 31, 2010
$25 par, 4% noncumulative, preferred stock, 840,000 shares authorized, 649,736 shares issued, 242,170 shares outstanding
| | 12 Months Ended
Dec. 31, 2009
$25 par, 4% noncumulative, preferred stock, 840,000 shares authorized, 649,736 shares issued, 242,170 shares outstanding
| Mar. 31, 2010
$25 par, 4% noncumulative, preferred stock, 840,000 shares authorized, 649,736 shares issued, 242,170 shares outstanding
| | Dec. 31, 2009
$25 par, 4% noncumulative, preferred stock, 840,000 shares authorized, 649,736 shares issued, 242,170 shares outstanding
| 3 Months Ended
Mar. 31, 2010
Series D - cumulative convertible perpetual preferred stock, $1 par, 5.125%, 210,000 shares authorized and issued, 209,995 shares outstanding with a liquidation preference of $1000 per share
| | 12 Months Ended
Dec. 31, 2009
Series D - cumulative convertible perpetual preferred stock, $1 par, 5.125%, 210,000 shares authorized and issued, 209,995 shares outstanding with a liquidation preference of $1000 per share
| Mar. 31, 2010
Series D - cumulative convertible perpetual preferred stock, $1 par, 5.125%, 210,000 shares authorized and issued, 209,995 shares outstanding with a liquidation preference of $1000 per share
| | Dec. 31, 2009
Series D - cumulative convertible perpetual preferred stock, $1 par, 5.125%, 210,000 shares authorized and issued, 209,995 shares outstanding with a liquidation preference of $1000 per share
|