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Note 10 - Interest Rate Swap Derivatives - Offsetting of Derivative Liabilities (Details) - Interest Rate Swap [Member] - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | ---
Gross amounts of recognized liabilities | $ 711 | $ 1,417
Gross amounts offset in the balance sheet | (19) |
Net amounts of liabilities presented in the balance sheet | 692 | 1,417
Gross amounts not offset in the balance sheet cash collateral posted | (550) | (2,910)
Gross amounts not offset in the balance sheet net amount | 142 | (1,493)
Counter Party 1 [Member] |  |
Gross amounts of recognized liabilities | 514 | 1,049
Gross amounts offset in the balance sheet | (19) |
Net amounts of liabilities presented in the balance sheet | 495 | 1,049
Gross amounts not offset in the balance sheet cash collateral posted | (380) | (2,170)
Gross amounts not offset in the balance sheet net amount | 115 | (1,121)
Counter Party 2 [Member] |  |
Gross amounts of recognized liabilities | 197 | 368
Gross amounts offset in the balance sheet |  |
Net amounts of liabilities presented in the balance sheet | 197 | 368
Gross amounts not offset in the balance sheet cash collateral posted | (170) | (740)
Gross amounts not offset in the balance sheet net amount | $ 27 | $ (372)

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