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Note 4 - Vessel, Net (Tables)
 3 Months Ended
Mar. 31, 2017
Notes Tables  
Property, Plant and Equipment [Table Text Block]
    Costs    
Accumulated
Depreciation
    
Net Book
Value
  
                   
Balance, January 1, 2017    
139,378,104
      
(33,793,471
 )    
105,584,633
  
Depreciation for the period    
-
      
(2,117,645
 )    
(2,117,645
 )
Vessel acquisition    
4,473,448
      
 
      
4,473,448
  
Vessel sale    
(1,807,199
 )    
 
      
(1,807,199
 )
Delivery of new building vessel    
17,749,847
      
-
      
17,749,847
  
Balance, March 31, 2017    
159,794,200
      
(35,911,116
 )    
123,883,084