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8. DERIVATIVES (Details - Fair value) - USD ($) $ in Thousands | Dec. 31, 2015 | Dec. 31, 2014
--- | --- | ---
Commodity contracts, Other current assets | $ 2,081 | $ 1,586
Commodity contracts, Other current liabilities | 1,848 | 1,149
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 | 2,081 | 1,586
Commodity contracts, Other current liabilities | $ 1,848 | $ 1,149

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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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624163-113959 + Details
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- Definition Fair value as of the balance sheet date of derivative instrument not designated as hedging instrument and classified as a liability. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624163-113959 + Details
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