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Note 14 - Equity Compensation Plan (Details Textual) - USD ($)
12 Months Ended 111 Months Ended 114 Months Ended
Nov. 20, 2017
Nov. 20, 2016
Nov. 20, 2015
Nov. 20, 2014
Nov. 22, 2012
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2016
Dec. 31, 2016
Dec. 31, 2007
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value           $ 210,525 $ 441,815 $ 681,073      
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized           $ 129,246     $ 129,246 $ 129,246  
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition           324 days          
Dividends           $ 0 0 0      
Restricted Stock [Member] | General and Administrative Expense [Member]                      
Allocated Share-based Compensation Expense           $ 340,377 $ 1,140,084 $ 357,967      
Nonvested Restricted Stock [Member]                      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period       230,713 74,761            
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value       $ 7.58 $ 7.26            
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period       3 years              
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period           57,678          
Nonvested Restricted Stock [Member] | Share-based Compensation Award, Tranche One [Member]                      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period     115,357                
Nonvested Restricted Stock [Member] | Share-based Compensation Award, Tranche Two [Member]                      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period   57,678                  
Nonvested Restricted Stock [Member] | Share-based Compensation Award, Tranche Three [Member] | Scenario, Forecast [Member]                      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period 57,678                    
The Plan [Member]                      
Common Stock, Reserved Percentage                     10.00%
The Plan [Member] | Restricted Stock [Member]                      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period                 0 555,479