Annual report pursuant to section 13 and 15(d)

5. DERIVATIVES (Details 1)

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5. DERIVATIVES (Details 1) (Commodity contracts [Member], Non Designated Derivative Instruments [Member], Cost of goods sold [Member], USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Commodity contracts [Member] | Non Designated Derivative Instruments [Member] | Cost of goods sold [Member]
   
Classification and amounts of the Company's derivatives not designated as hedging instruments    
Realized Gains (Losses) $ 720 $ 338
Unrealized Gains $ 279 $ (242)