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Note 4 - Acquisitions (Details) - Purchase Price Allocation of Renewables (USD $) In Thousands, unless otherwise specified | Dec. 02, 2013 | Oct. 06, 2011
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Purchase Price Allocation of Renewables [Abstract] |  |
Cash |  | $ 144
Inventories | 434 | 45
Other current assets |  | 197
Biomass foundation and feedstock |  | 1,611
Property, plant and equipment | 835 | 114
Intangible assets |  | 536
Total assets | 2,934 | 2,647
Current liabilities |  | (147)
Total net assets acquired |  | $ 2,500

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- Definition Amount of assets acquired at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=39739317&loc=d3e4845-128472 + Details
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- Definition The amount of financial liabilities assumed (as defined) which have been recognized as of the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=39739317&loc=d3e4845-128472 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI http://asc.fasb.org/extlink&oid=35744172&loc=d3e2207-128464 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financial Liability -URI http://asc.fasb.org/extlink&oid=6513127 + Details
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