Consolidated Balance Sheets (Parenthetical) (USD $)	Jun. 30, 2011	Dec. 31, 2010
Shareholders' Equity
Common stock, par value	$ 0.10	$ 0.10
Common stock, shares authorized	25,000,000	25,000,000
Common stock, shares issued	11,907,867	11,838,873
Common stock, shares outstanding	11,907,867	11,838,873
Series K Preferred Stock
Shareholders' Equity
Preferred stock, par value	$ 0.10	$ 0.10
Preferred Stock, Liquidation Preference	$ 5,000	$ 5,000
Preferred stock, shares authorized	475	475
Preferred stock, shares issued	439	439
Preferred stock, shares outstanding	439	439
Series E Preferred Stock
Shareholders' Equity
Preferred stock, par value	$ 0.10	$ 0.10
Preferred Stock, Liquidation Preference	$ 5,000	$ 5,000
Preferred stock, shares authorized	80	80
Preferred stock, shares issued	80	80
Preferred stock, shares outstanding	80	80
Series G Preferred Stock
Shareholders' Equity
Preferred stock, par value	$ 0.10	$ 0.10
Preferred Stock, Liquidation Preference	$ 5,000	$ 5,000
Preferred stock, shares authorized	725	725
Preferred stock, shares issued	536	536
Preferred stock, shares outstanding	536	536
Series H Preferred Stock
Shareholders' Equity
Preferred stock, par value	$ 0.10	$ 0.10
Preferred Stock, Liquidation Preference	$ 5,000	$ 5,000
Preferred stock, shares authorized	125	125
Preferred stock, shares issued	76	76
Preferred stock, shares outstanding	76	76
Series AAA Preferred Stock
Shareholders' Equity
Preferred stock, par value	$ 0.10	$ 0.10
Preferred Stock, Liquidation Preference	$ 5,000	$ 5,000
Preferred stock, shares authorized	166	166
Preferred stock, shares issued	166	166
Preferred stock, shares outstanding	166	166