Stockholders' Equity (Details) (USD $)
 1 Months Ended 9 Months Ended 0 Months Ended 9 Months Ended 9 Months Ended 0 Months Ended 9 Months Ended 0 Months Ended 9 Months Ended
May 31, 2012
Sep. 30, 2012
Sep. 30, 2011
Oct. 05, 2012
Oct. 05, 2012
Subsequent Event
Reverse Stock Split
Dec. 19, 2008
Fixed Rate Cumulative Perpetual Preferred Stock, Series A
Sep. 30, 2012
Fixed Rate Cumulative Perpetual Preferred Stock, Series A
Dec. 31, 2011
Fixed Rate Cumulative Perpetual Preferred Stock, Series A
Oct. 05, 2012
Unexercised warrants
Subsequent Event
Reverse Stock Split
Sep. 30, 2012
Mandatorily Convertible Cumulative Participating Preferred Stock, Series B
quarterly_periods
Board_Members
Oct. 05, 2012
Voting common stock
Subsequent Event
Reverse Stock Split
Oct. 05, 2012
Non-voting common stock
Subsequent Event
Reverse Stock Split
Sep. 30, 2012
Term note payable
quarterly_periods
Sep. 30, 2012
First Five Years
Fixed Rate Cumulative Perpetual Preferred Stock, Series A
Sep. 30, 2012
Thereafter
Fixed Rate Cumulative Perpetual Preferred Stock, Series A
Dec. 19, 2008
December 2008 Capital Raise
Dec. 19, 2008
December 2008 Capital Raise
Unexercised warrants
Oct. 05, 2012
December 2008 Capital Raise
Unexercised warrants
Subsequent Event
Reverse Stock Split
Sep. 30, 2012
January 2012 Capital Raise
shareholders
Oct. 05, 2012
January 2012 Capital Raise
Subsequent Event
Reverse Stock Split
Class of Stock [Line Items]                                        
Stock issued           27,000                            
Liquidation preference per share           $ 1,000 $ 1,000 $ 1,000   $ 0.01                    
Length of warrant                               10 years        
Number of securities called by warrants   1,700,000     170,000                       653,226 65,323 1,700,000 170,000
Proceeds from issuance of preferred stock and preference stock           $ 27,000,000                            
Exercise price of warrants or rights (dollar per share)                 62                     10
Preferred stock, dividend rate                           5.00% 9.00%          
Number of years for five percent dividends             5 years                          
Restriction period of common stock repurchase program             3 years                          
Preferred stock, shares authorized                   864,600                    
Preferred stock, shares outstanding             27,000 27,000   698,993                    
Converible perferred stock, shares issued upon conversion                   50                    
Conversion price per share                   $ 1.00                    
Conversion ratio for reverse stock split       0.1 0.1                              
Proceeds from issuance of common stock 8,700,000 22,532,000 0                                  
Stock issued on a reverse-split adjusted basis                     525,000 345,000                
Number of shareholders participating in warrant offering                                     2  
Maximum number of periods for dividend deferral trigger                   6                    
Number of board members allocated for non payment of dividends                   2                    
Debt instrument number of interest payment deferral periods                         20              
Cash preserved through interest and dividend deferral, by quarter   $ 477,000