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Note 14 - Fair Value (Details) - Financial Liabilities Carried at Fair Value on Recurring Basis (USD $)
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Dec. 31, 2013
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Dec. 31, 2012
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|---|---|---|
| Liabilities | ||
| Contingent payments related to sale of wind farm project | $ 600,049 | |
| Total liabilities | 1,060,049 | 1,123,509 |
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Fair Value, Inputs, Level 2 [Member] | Interest Rate Swap [Member]
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| Liabilities | ||
| Interest rate swap | 460,000 | 1,123,509 |
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Fair Value, Inputs, Level 2 [Member]
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| Liabilities | ||
| Total liabilities | 460,000 | 1,123,509 |
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Fair Value, Inputs, Level 3 [Member]
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||
| Liabilities | ||
| Contingent payments related to sale of wind farm project | 600,049 | |
| Total liabilities | 600,049 | |
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Interest Rate Swap [Member]
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| Liabilities | ||
| Interest rate swap | $ 460,000 | $ 1,123,509 |