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Note 16 - Derivative Financial Instruments (Detail) - Derivatives Not Designated as Hedging Instruments by Account Type (USD $) | Dec. 31, 2012 | Dec. 31, 2011
--- | --- | ---
Interest rate swap contracts | $ 1,718,438 | $ 1,907,088
Interest rate contracts | 675,130 | 1,544,409
Total derivative liabilities | $ 2,393,568 | $ 3,451,497

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