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Note 2 - Summary of Significant Accounting Policies (Tables) | 9 Months Ended
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Sep. 30, 2012
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
|  | Three months ended September 30, |  |  | Nine months ended September 30, |
|  | 2012 |  |  | 2011 |  |  | 2012 |  |  | 2011 |
Basic and diluted loss per share: |  |  |  |  |  |  |  |  |  |  |  |
Net loss |  | $ | (928 | ) |  | $ | (1,459 | ) |  | $ | (3,695 | ) |  | $ | (5,445 | )
Basic and diluted loss per share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average shares outstanding |  |  | 44,542 |  |  |  | 24,845 |  |  |  | 40,241 |  |  |  | 24,610 |
Basic and diluted net loss per share |  | $ | (0.02 | ) |  | $ | (0.06 | ) |  | $ | (0.09 | ) |  | $ | (0.22 | )
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block] |
|  | Three months ended September 30, |  |  | Nine months ended September 30, |
|  | 2012 |  |  | 2011 |  |  | 2012 |  |  | 2011 |
Stock option expense |  | $ | 42 |  |  | $ | 75 |  |  | $ | 146 |  |  | $ | 171 |
Executive & Director stock-based compensation |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 107 |
Employee incentive stock-based compensation |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 106 |
Total stock-based compensation |  | $ | 42 |  |  | $ | 75 |  |  | $ | 146 |  |  | $ | 384 |
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] |
|  | Nine months ended September 30, |
|  | 2012 |  |  | 2011 |
Fair value of options issued |  | $ | 0.15 |  |  | $ | 0.45 |
Exercise price |  | $ | 0.27 |  |  | $ | 0.83 |
Expected life of option (years) |  |  | 5.6 |  |  |  | 6.1 |
Risk-free interest rate |  |  | 0.82 | % |  |  | 2.14 | %
Expected volatility |  |  | 59.00 | % |  |  | 56.39 | %
Dividend yield |  |  | 0 | % |  |  | 0 | %
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] |
|  | Options |  |  | Weighted Average Exercise Price |  |  | Weighted Average Remaining Contractural Term (in Years) |
Outstanding as of December 31, 2011 |  |  | 2,318,498 |  |  | $ | 2.28 |  |  |  |
Granted |  |  | 120,000 |  |  | $ | 0.27 |  |  |  |
Exercised |  |  | - |  |  | $ | - |  |  |  |
Cancelled/forfeited |  |  | (212,248 | ) |  | $ | 2.52 |  |  |  |
Outstanding as of September 30, 2012 |  |  | 2,226,250 |  |  | $ | 2.17 |  |  |  | 7.0 |
Exercisable as of September 30, 2012 |  |  | 1,394,611 |  |  | $ | 3.02 |  |  |  | 6.1 |
Schedule of Product Warranty Liability [Table Text Block] |
|  | Three months ended September 30, |  |  | Nine months ended September 30, |
|  | 2012 |  |  | 2011 |  |  | 2012 |  |  | 2011 |
Balance at the beginning of the period |  | $ | 125 |  |  | $ | 100 |  |  | $ | 100 |  |  | $ | 126 |
Accruals for warranties issued |  |  | 52 |  |  |  | 23 |  |  |  | 110 |  |  |  | 45 |
Settlements made during the period (in cash or in kind) |  |  | (18 | ) |  |  | (23 | ) |  |  | (51 | ) |  |  | (71 | )
Balance at the end of the period |  | $ | 159 |  |  | $ | 100 |  |  | $ | 159 |  |  | $ | 100 |

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- Definition Tabular disclosure of the allocation of equity-based compensation costs to a given line item on the balance sheet and income statement for the period. This may include the reporting line for the costs and the amount capitalized and expensed. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph g(1) -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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section F Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph 64 -Subparagraph b -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 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 14.F) -URI http://asc.fasb.org/extlink&oid=6793087&loc=d3e301413-122809 + Details
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