Preferred Stock (Details Textual) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Issuance of preferred stock	$ 4,858,078	$ 7,135,402	$ 2,727,424
Preferred stock, shares issued	600,000	403,989
Preferred Stock, Par or Stated Value Per Share	$ 25.00
Stockholders' Equity, Other Shares		56,440
Preferred Stock, Value, Subscriptions		1,399,665
Accumulated Dividends Preferred Stock	683,893	440,031
Series Preferred Stock [Member]
Issuance of preferred stock	$ 15,000,000
Preferred stock, shares issued	600,000
Preferred Stock, Par or Stated Value Per Share	$ 25.00
Preferred Stock, Dividend Rate, Per-Dollar-Amount	$ 2.50
Preferred Stock, Dividend Rate, Percentage	10.00%
Convertible Preferred Stock, Shares Issued upon Conversion	5
Preferred Stock Convertible Conversion Price1	$ 5.00
Common Stock Conversion Rate Maturity Date	Jul. 31, 2015
Common Stock Conversion Price Percentage	150.00%