8. DERIVATIVES (Details - Fair value) - USD ($) $ in Thousands |
Dec. 31, 2016 |
Dec. 31, 2015 |
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Commodity contracts, Other current assets | $ 978 | $ 2,081 |
Commodity contracts, Other current liabilities | 4,115 | 1,848 |
Non Designated Derivative Instruments [Member] | Commodity contracts [Member] | Other Current Assets [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | ||
Commodity contracts, Other current assets | 978 | 2,081 |
Commodity contracts, Other current liabilities | $ 4,115 | $ 1,848 |
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- Definition Fair value as of the balance sheet date of derivative instrument not designated as hedging instrument and classified as an asset. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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