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Note 16 - Income Taxes (Details) - Aggregate Changes in Balance of Gross Unrecognized Tax Benefits (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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| Aggregate Changes in Balance of Gross Unrecognized Tax Benefits [Abstract] | ||
| Balance, beginning of year | $ 140,000 | $ 136,000 |
| Additions for tax positions related to prior years | 7,000 | 4,000 |
| Balance, end of year | $ 147,000 | $ 140,000 |