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Supplemental Cash Flow Information (Tables)
 3 Months Ended
Mar. 31, 2013
Supplemental Cash Flow Information [Abstract]  
Schedule of Changes in Working Capital
Changes in working capital for the three months are as follows:
 
 
For the three months ended March 31,
 
 
2013
 
2012
Decrease/(increase) in accounts receivable
 
$
(84
)
 
$
(1,969
)
(Increase)/decrease in inventories
 
(3,289
)
 
(2,012
)
(Increase)/decrease in deposits
 
1,237

 
(1,305
)
(Decrease)/increase in accounts payable and accrued liabilities
 
1,322

 
3,018

Other
 
(1,501
)
 
(774
)
Total Changes in working capital
 
$
(2,315
)
 
$
(3,042
)