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Note 6 - Vessels, Net and Vessels Held for Sale (Tables)
9 Months Ended
Sep. 30, 2012
Property, Plant and Equipment [Table Text Block]
                         
 
  
Vessel cost
   
Accumulated
Depreciation
   
Net Book
Value
 
Balance, December 31, 2011
  
 
729,452,091
  
   
(115,619,118
   
613,832,973
  
Additions / transfers from vessels under construction
  
 
65,661,576
  
   
—  
  
   
65,661,576
  
Vessel disposal
  
 
(18,811,000
   
2,727,787
  
   
(16,083,213
Depreciation for the period
  
 
—  
  
   
(21,442,465
   
(21,442,465
Balance, September 30, 2012
  
 
776,302,667
  
   
(134,333,796
   
641,968,871