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Note 6 - Long-term Debt (Details Textual) - USD ($) $ / shares in Units, $ in Thousands |  | 1 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Feb. 08, 2016 | Nov. 30, 2015 | Dec. 31, 2015 | Dec. 31, 2014 | Mar. 04, 2016 | Feb. 25, 2016 | Oct. 31, 2015
Senior Secured Debt [Member] | Subsequent Event [Member] |  |  |  |  |  |  |
Debt Instrument, Fee Amount |  |  |  |  |  | $ 2,250 |
Repayments of Senior Debt | $ 10,500 |  |  |  |  |  |
Percentage of Future Quarterly Interest Payments | 50.00% |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  | 8.00% |  |
Senior Secured Debt [Member] |  |  |  |  |  |  |
Debt Instrument, Fee Amount |  | $ 2,250 |  |  |  |  |
Convertible Note Instrument, Due March 5, 2020 [Member] |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  | 7.00% | 7.00% |  |  |
Deferred Finance Costs, Net |  | $ 400 |  |  |  |  |
Subsequent Event [Member] | Fenner Valley Farms LLC [Member] |  |  |  |  |  |  |
Proceeds from Leases Held-for-investment | $ 12,000 |  |  |  |  |  |
Percentage of Future Quarterly Interest Payments |  |  | 50.00% |  |  |  |
Percentage of Convertible Note Holders to Exchange Outstanding Convertible Notes |  | 94.00% |  |  |  |  |
Debt Instrument, Convertible, Conversion Price |  | $ 8.05 |  |  |  |  | $ 6.75
Adjustments to Additional Paid in Capital, Convertible Debt with Conversion Feature |  | $ 5,200 | $ 5,139 |  |  |  |
Stock Issued During Period, Value, Conversion of Convertible Securities |  |  | $ 1,006 | $ 311 |  |  |
Stock Issued During Period, Shares, Conversion of Convertible Securities |  |  | 126,633 |  |  |  |

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- Definition Amount of increase (decrease) in additional paid in capital (APIC) resulting from recognition of deferred taxes for convertible debt with a beneficial conversion feature. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 55 -Paragraph 51 -URI http://asc.fasb.org/extlink&oid=51663037&loc=d3e34017-109320 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Beneficial Conversion Feature -URI http://asc.fasb.org/extlink&oid=6505963 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
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