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Non - Redeemable Preferred Stock (Details) (USD $)
 12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Non - Redeemable Preferred Stock (Textual) (Abstract)      
Cash dividends paid on non-redeemable preferred stock $ 305,000 $ 305,000 $ 306,000
Series B Preferred stock [Member]
      
Non - Redeemable Preferred Stock (Textual) (Abstract)      
Preferred stock, shares outstanding 20,000 20,000  
Number of cumulative convertible preferred stock 20,000 20,000  
Preferred stock, par value $ 100 $ 100  
Preferred shares' annual cumulative dividends 12.00% 12.00%  
Preferred stock converted into shares of common stock 666,666    
Number of shares of common stock for each share of converted preferred stock 33.3333 shares of common stock for each share of preferred stock    
Cash dividends paid on non-redeemable preferred stock 240,000 240,000 240,000
Cash dividends paid on non-redeemable preferred stock per share $ 12.00 $ 12.00 $ 12.00
Shares of authorized additional preferred stock 229,539    
Series D Preferred stock
      
Non - Redeemable Preferred Stock (Textual) (Abstract)      
Preferred stock, shares outstanding 1,000,000 1,000,000  
Number of cumulative convertible preferred stock 1,000,000 1,000,000  
Preferred stock, par value       
Preferred shares' annual cumulative dividends 6.00% 6.00%  
Preferred stock converted into shares of common stock 250,000    
Number of shares of common stock for each share of converted preferred stock 1 share of common stock for 4 shares of preferred stock    
Liquidation preference of Series D preferred stock $ 1.00    
Votes per share for Series D preferred share holder 0.875 votes per share    
Cash dividends paid on non-redeemable preferred stock 60,000 60,000 60,000
Cash dividends paid on non-redeemable preferred stock per share $ 0.06 $ 0.06 $ 0.06
Shares of authorized additional preferred stock 4,000,000    
No par value of authorized additional preferred stock        
Non-Redeemable Preferred Stock [Member]
      
Non - Redeemable Preferred Stock (Textual) (Abstract)      
Dividends in arrears $ 0