Note 6 - Debt (Details) - USD ($) |
3 Months Ended | |||||
|---|---|---|---|---|---|---|
Mar. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
Jan. 31, 2014 |
Mar. 31, 2013 |
Mar. 31, 2010 |
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| Notes Payable To Shareholder | ||||||
| Debt Instrument, Carrying Amount | $ 26,000 | $ 26,000 | ||||
| Debt Instrument, Interest Rate, Stated Percentage | 12.00% | |||||
| Interest Payable, Current | $ 59,641 | $ 58,865 | ||||
| Convertible Debt Securities | Investor | ||||||
| Debt Instrument, Interest Rate, Stated Percentage | 8.00% | 8.00% | ||||
| Debt Instrument, Face Amount | $ 130,000 | $ 130,000 | ||||
| Class of Warrant, Outstanding | 1,083,332 | |||||
| Debt Instrument, Convertible, Conversion Price | $ 1.448 | |||||
| Debt Instrument, Unamortized Discount | $ 73,000 | $ 73,000 | ||||
| Convertible Debt Securities | GCE Mexico I LLC And Subsidiaries | ||||||
| Debt Instrument, Interest Rate, Stated Percentage | 5.97% | |||||
| Debt Instrument, Face Amount | $ 567,000 | |||||
| Class of Warrant, Outstanding | 1,890,000 | |||||
| Debt Instrument, Maturity Date, Description | The Convertible Notes mature on the earlier of (i) March 16, 2012, or (ii) upon written demand of payment by the note holders following the Company's default thereunder. The maturity date of the Convertible Notes have been extended until September 15, 2016 | |||||
| Debt Instrument, Interest Rate Terms | payable quarterly in cash, in arrears, on each year anniversary of the issuance of the convertible notes. The Company may at its option, in lieu of paying interest in cash, pay interest by delivering a number of unregistered shares of its common stock equal to the quotient obtained by dividing the amount of such interest by the arithmetic average of the volume weighted average price for each of the five consecutive trading days immediately preceding the interest payment date | |||||
| Sustainable Oils LLC Acquisition | ||||||
| Debt Instrument, Carrying Amount | $ 1,343,856 | |||||
| Debt Instrument, Interest Rate, Stated Percentage | 18.00% | |||||
| Debt Instrument, Face Amount | $ 1,300,000 |
| X | ||||||||||
- Definition Number of warrants or rights outstanding. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The price per share of the conversion feature embedded in the debt instrument. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Face (par) amount of debt instrument at time of issuance. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Description of the interest rate as being fixed or variable, and, if variable, identification of the index or rate on which the interest rate is based and the number of points or percentage added to that index or rate to set the rate, and other pertinent information, such as frequency of rate resets. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Description of the maturity date of the debt instrument including whether the debt matures serially and, if so, a brief description of the serial maturities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount, after accumulated amortization, of debt discount. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Carrying value as of the balance sheet date of [accrued] interest payable on all forms of debt, including trade payables, that has been incurred and is unpaid. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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