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Preferred Stock Convertible Redeemable Series E Preferred Stock (Details) (USD $)
 3 Months Ended 12 Months Ended 0 Months Ended 3 Months Ended 0 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Dec. 31, 2012
Oct. 25, 2012
Nov. 19, 2010
Nov. 19, 2010
Series E Seven Percent Senior Convertible Preferred Stock [Member]
Mar. 31, 2013
Series E Seven Percent Senior Convertible Preferred Stock [Member]
Mar. 31, 2013
Warrant to purchase 0.25 of a share of Common Stock [Member]
Nov. 19, 2010
Warrant to purchase 0.25 of a share of Common Stock [Member]
Nov. 19, 2010
Warrant to purchase 0.0155 of a share of Common Stock [Member]
Nov. 19, 2010
Preferred Offering Unit [Member]
Mar. 31, 2013
Fair Value, Inputs, Level 3 [Member]
Dec. 31, 2012
Fair Value, Inputs, Level 3 [Member]
Class of Stock [Line Items]                          
Percent of Preferred Shares Required to be Redeemed Monthly             3.7037%            
Preferred Offering Units         10,582,011                
Number of Shares of Preferred Stock Included in Preferred Offering Unit           1              
Preferred Stock, Dividend Rate, Percentage           7.00%              
Preferred stock, par value $ 0.01   $ 0.01   $ 0.01                
Class of Warrant or Right, Number of Securities Called by Warrants or Rights                 0.25 0.0155      
Stock and Warrants Issued During Period, Shares, Preferred Stock and Warrants               1,769,588 1,322,486 164,418      
Sale of Stock, Price Per Share         $ 0.945                
Net proceeds from issuance of capital stock $ 2,730,262 $ 7,691,059                 $ 10,000,000    
Net Proceeds from Issuance or Sale of Equity                     8,900,000    
Preferred Stock, Shares Outstanding 10,000   10,000 2,351,558                  
Common stock issued in payment of dividends for the Convertible Redeemable Series E 7% Preferred Stock     3,400,000                    
Proceeds from (Repurchase of) Redeemable Preferred Stock     2,500,000                    
Payments of Dividends, Preferred Stock and Preference Stock     3,100,000                    
Payments for Repurchase of Redeemable Preferred Stock     200,000                    
Increase (Decrease) in Interest Payable, Net     36,000                    
Common Stock Dividends, Shares     7,950,107                    
Warrant Derivative Liabilities                       $ 90,600 $ 101,200