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Note 9 - Long-term Debt (Details Textual) - USD ($)
$ in Thousands
Mar. 31, 2019
Dec. 31, 2018
Long-term Federal Home Loan Bank Advances, Total $ 0 $ 0
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged 20,400 27,000
Federal Home Loan Bank, Advances, General Debt Obligations, Amount of Available, Unused Funds $ 237,500 $ 282,200