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FAIR VALUE MEASUREMENTS (Tables)
 12 Months Ended
Dec. 31, 2012
FAIR VALUE MEASUREMENTS [Abstract]  
Fair Value, by Balance Sheet Grouping [Table Text Block]
Financial items measured at fair value are classified in the table below in accordance with the hierarchy established in applicable accounting principles.
 
 
 
As at December 31, 2012
 
 
Level 1
 
Level 2
 
Level 3
 
Total
Short-term deposits
 
$
—

 
$
—

 
$
—

 
$
—

Restricted deposits – current and non-current
 
814

 
—

 
—

 
814

Funds held in escrow
 
—

 
—

 
—

 
—

Derivative assets
 
112

 
—

 
—

 
112

Total
 
$
926

 
$
—

 
$
—

 
$
926


 
 
 
As at December 31, 2011
 
 
Level 1
 
Level 2
 
Level 3
 
Total
Short-term deposits
 
$
18,000

 
$
—

 
$
—

 
$
18,000

Restricted deposits – current and non-current
 
2,494

 
—

 
—

 
2,494

Funds held in escrow
 
5,961

 
—

 
—

 
5,961

Derivative liabilities
 
(18
)
 
—

 
—

 
(18
)
Total
 
$
26,437

 
$
—

 
$
—

 
$
26,437