Note 8 - FHLB Advances (Details Textual) - USD ($)	Dec. 31, 2018	Dec. 31, 2017
Advances from Federal Home Loan Banks, Total	$ 0	$ 0
Federal Home Loan Bank, Advances, General Debt Obligations, Amount of Available, Unused Funds	268,936,000	249,170,000
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged	$ 711,902,000	$ 662,544,000

Amount of borrowings as of the balance sheet date from the Federal Home Loan Bank, which are primarily used to cover shortages in the required reserve balance and liquidity shortages.

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Amount of advances or credit lines available from the Federal Home Loan Bank (FHLB).

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Amount of the collateral pledged in support of federal home loan bank advances outstanding.

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