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Note 18 - Fair Values of Financial Instruments - Financial Instruments (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Securities available-for-sale | $ 410,669 | $ 277,219
Interest rate swap agreements | 4,012 | 1,544
Interest rate swap agreements | 3,638 | 1,358
Securities available-for-sale | 410,669 | 277,219
Reported Value Measurement [Member] |  |
Cash and cash equivalents | 19,922 | 47,258
Certificates of deposit in other financial institutions | 1,897 | 2,170
Securities available-for-sale | 410,669 | 277,219
Loans held-for-sale | 11,329 | 6,091
Loans receivable, net | 954,120 | 897,870
Federal Home Loan Bank stock | 3,918 | 3,912
Interest rate swap agreements | 3,638 | 1,358
Accrued interest receivable | 4,713 | 4,029
Non-interest bearing deposits | 241,620 | 172,094
Interest bearing deposits | 1,060,719 | 982,276
Repurchase agreements | 13,711 | 11,499
Borrowed funds | 6,149 | 14,000
Interest rate swap agreements | 3,638 | 1,358
Accrued interest payable | 54 | 179
Securities available-for-sale | 410,669 | 277,219
Estimate of Fair Value Measurement [Member] |  |
Cash and cash equivalents | 19,922 | 47,258
Certificates of deposit in other financial institutions | 1,868 | 2,137
Securities available-for-sale | 410,669 | 277,219
Loans held-for-sale | 11,660 | 6,204
Loans receivable, net | 984,270 | 917,174
Federal Home Loan Bank stock | 3,918 | 3,912
Interest rate swap agreements | 3,638 | 1,358
Accrued interest receivable | 4,713 | 4,029
Non-interest bearing deposits | 241,620 | 172,094
Interest bearing deposits | 1,061,294 | 982,241
Repurchase agreements | 13,713 | 11,499
Borrowed funds | 6,018 | 14,108
Interest rate swap agreements | 3,638 | 1,358
Accrued interest payable | 54 | 179
Securities available-for-sale | 410,669 | 277,219
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Cash and cash equivalents | 19,922 | 47,258
Certificates of deposit in other financial institutions | 0 | 0
Securities available-for-sale | 52,941 | 9,670
Loans held-for-sale | 11,660 | 6,204
Loans receivable, net | 0 | 0
Federal Home Loan Bank stock | 0 | 0
Interest rate swap agreements | 0 | 0
Accrued interest receivable | 0 | 0
Non-interest bearing deposits | 241,620 | 172,094
Interest bearing deposits | 775,891 | 654,573
Repurchase agreements | 11,976 | 9,721
Borrowed funds | 0 | 0
Interest rate swap agreements | 0 | 0
Accrued interest payable | 0 | 0
Securities available-for-sale | 52,941 | 9,670
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Cash and cash equivalents | 0 | 0
Certificates of deposit in other financial institutions | 1,868 | 2,137
Securities available-for-sale | 356,799 | 266,473
Loans held-for-sale | 0 | 0
Loans receivable, net | 0 | 0
Federal Home Loan Bank stock | 3,918 | 3,912
Interest rate swap agreements | 3,638 | 1,358
Accrued interest receivable | 4,713 | 4,029
Non-interest bearing deposits | 0 | 0
Interest bearing deposits | 285,403 | 327,668
Repurchase agreements | 1,737 | 1,778
Borrowed funds | 6,018 | 14,108
Interest rate swap agreements | 3,638 | 1,358
Accrued interest payable | 54 | 179
Securities available-for-sale | 356,799 | 266,473
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Cash and cash equivalents | 0 | 0
Certificates of deposit in other financial institutions | 0 | 0
Securities available-for-sale | 929 | 1,076
Loans held-for-sale | 0 | 0
Loans receivable, net | 984,270 | 917,174
Federal Home Loan Bank stock | 0 | 0
Interest rate swap agreements | 0 | 0
Accrued interest receivable | 0 | 0
Non-interest bearing deposits | 0 | 0
Interest bearing deposits | 0 | 0
Repurchase agreements | 0 | 0
Borrowed funds | 0 | 0
Interest rate swap agreements | 0 | 0
Accrued interest payable | 0 | 0
Securities available-for-sale | $ 929 | $ 1,076

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