Annual report pursuant to section 13 and 15(d)

5. DERIVATIVES (Details)

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5. DERIVATIVES (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Derivative Instruments and Hedging Activities Disclosure [Abstract]    
Type of derivative Commodity contracts Commodity contracts
Other current assets $ 189 $ 244
Accrued liabilities $ 167 $ 500