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Note 2 - Summary of Significant Accounting Policies (Details) - Liability for Manufacturing Warranty (USD $)
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12 Months Ended | |
|---|---|---|
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Dec. 31, 2013
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Dec. 31, 2012
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| Liability for Manufacturing Warranty [Abstract] | ||
| Beginning accrued warranty balance | $ 329,680 | $ 217,812 |
| Reduction for labor payments and claims made under the warranty | (4,400) | (1,723) |
| Accruals related to warranties issued during the period | 19,710 | 113,591 |
| Ending accrued warranty balance | $ 344,990 | $ 329,680 |