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Vessels (Tables)
6 Months Ended
Jun. 30, 2013
Vessels (Abstract)  
Vessels (Table Text Block)
 
 
Net Book
 
 
Value
Carrying amount as at January 1, 2012
 
$
1,073,986
Acquisition and improvements
 
 
133,105
Disposals
 
 
(156,128)
Impairment of vessels
 
 
(43,178)
Depreciation
 
 
(48,235)
Carrying amount as at December 31, 2012
 
$
959,550
Acquisitions and improvements
 
 
108,000
Depreciation
 
 
(24,650)
Carrying amount as at June 30, 2013
 
$
1,042,900