Note 13 - Preferred Stock (Details Textual) - USD ($)
 12 Months Ended
Nov. 17, 2014
Jan. 08, 2014
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Preferred Stock, Shares Issued     9,360 18,021  
Class of Warrant or Right, Number of Securities Called by Warrants or Rights     500,000    
Preferred Stock, Liquidation Preference Per Share     $ 1,000    
Class of Warrant or Right, Exercise Price of Warrants or Rights     $ 8.40    
Preferred Stock, Dividend Rate, Percentage   5.00% 9.00%    
Payments of Ordinary Dividends, Preferred Stock and Preference Stock $ 5,492,749   $ 1,590,746 $ 2,487,274 $ 5,492,749
Series A Preferred Stock [Member]          
Preferred Stock, Shares Issued     9,360 18,021  
Stock Redeemed or Called During Period, Shares     8,661 9,979  
Preferred Stock, Redemption Price Per Share     $ 1,000