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Note 8 - Borrowings - Long-term Borrowings (Details) - USD ($)
$ in Thousands
Jun. 30, 2016
Dec. 31, 2015
Jun. 30, 2015
Subordinated Notes, 5.75% [Member]      
Long-term Debt, Gross $ 70,000 $ 70,000 $ 70,000
Subordinated Notes, 8.5% [Member]      
Long-term Debt, Gross 4,050
Less: debt issurance costs (1,011) (1,072) (1,134)
Long-term borrowings $ 68,989 $ 68,928 $ 72,916