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Note 10 - Commitments and Contingencies (Detail) (USD $) | 1 Months Ended | 3 Months Ended | 6 Months Ended | 12 Months Ended | 76 Months Ended | 1 Months Ended | 3 Months Ended | 6 Months Ended | 12 Months Ended
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Sep. 29, 2011 | Jun. 30, 2013 | Jun. 30, 2012 | Jun. 30, 2013 | Jun. 30, 2012 | Dec. 31, 2012 | Jun. 30, 2013 | Oct. 25, 2012 Waste Heat Solutions | Oct. 25, 2012 Shares 500,000 Waste Heat Solutions | Mar. 31, 2013 Consulting Agreement | Feb. 28, 2013 Consulting Agreement | Mar. 31, 2013 Consulting Agreement | Jun. 30, 2013 Consulting Agreement | Dec. 31, 2012 Consulting Agreement
Intercompany agreements, description | On September 29, 2011, the Company entered into a license agreement (the "License Agreement") with Newton Investments BV. Pursuant to the License Agreement, Newton will, for a period of 10 years, hold the exclusive manufacturing and distribution rights for the Systems in the 27 countries which are currently members of the European Union, subject to Newton's achieving minimum sales of at least 100 Systems per year beginning in the second year of the License Agreement, payment of a royalty equal to 20% of the gross sales price of each System sold, and other terms and conditions set forth in the License Agreement. Due to ongoing technical problems with the Company's Systems, the Company has deferred commencement of the minimum sales requirement until the problems are resolved. |  |  |  |  |  |  |  |  |  |  |  |  |
Intercompany agreement royalty rate | 20.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Consulting fee |  |  |  |  |  |  |  |  |  | $ 7,500 | $ 5,000 |  |  |
Period of option in year |  |  |  |  |  |  |  |  |  |  | 10 years |  |  |
Number of warrants issued in connection with this consulting agreement |  |  |  |  |  |  |  | 500,000 |  |  |  |  |  |
Exercise price of warrants |  |  |  |  |  |  |  | $ 0.56 |  |  |  |  |  |
Fair value of the fully vested option recorded as general and administrative expenses |  | 189,827 | 271,433 | 642,504 | 492,672 |  | 4,292,934 |  |  |  |  |  |  | 182,000
Fair value of the fully vested option recorded as research and development expense |  | $ 77,405 | $ 295,251 | $ 313,562 | $ 872,287 |  | $ 3,642,456 |  |  |  |  | $ 91,000 | $ 30,300 | $ 182,000
Consulting agreement and terms |  |  |  |  |  |  |  |  | On October 25, 2012, the Company entered into a consulting agreement with Hank Leibowitz, the principal of Waste Heat Solutions, LLC, an expert with 40 years' experience in the field of advanced energy systems. Pursuant to this consulting agreement, which is terminable by either party on 30 days' notice, the Company pays Waste Heat Solutions, $5,000 per month through February 2013 and $7,500 per month thereafter. In connection with this consulting agreement, the Company issued to Waste Heat Solutions (i) a fully vested 10-year option to purchase 500,000 shares of common stock at $.56 per share and (ii) a 10-year option, vesting six months from the contract date, i.e., on April 25, 2013, to purchase an additional 500,000 shares at $.56 per share. The fair value of the fully vested option was approximately $182,000 and was recorded as general and administrative expenses in the consolidated statements of operations during 2012. The fair value of the option vesting six months from the contract date was approximately $182,000 of which approximately $91,000 was recorded as research and development expense in the condensed consolidated statements of operations for the first quarter 2013. The remaining $30,300 was recognized in the second quarter of 2013 |  |  |  |  |

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- Definition Description of product support, consulting, business, or other advisory service agreements entered into between the managing member or general partner and the LLC or LP, affiliate of the managing member or general partner, or affiliate of the LLC or LP. Includes a description of the key provisions of such agreements and the amount of compensation for such services during the accounting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 57 -Paragraph 2 -Subparagraph a, b, c, d -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 985 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6501960&loc=d3e128462-111756 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 730 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6420194&loc=d3e21568-108373 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 2 -Paragraph 12, 13 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 51 -Subparagraph g -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 86 -Paragraph 11, 12 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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