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Note 3 - Securities (Tables) | 3 Months Ended
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Mar. 31, 2021
Notes Tables |
Available-for-sale Securities [Table Text Block] |
|  | (Dollars in thousands) |
|  |  |  |  |  | Gross |  |  | Gross |  |  | Estimated |
|  | Cost |  |  | Unrealized |  |  | Unrealized |  |  | Fair |
|  | Basis |  |  | Gains |  |  | Losses |  |  | Value |
March 31, 2021 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. government sponsored entities |  |  | 12,881 |  |  |  | - |  |  |  | (264 | ) |  |  | 12,617 |
U.S. treasury securities |  |  | 402 |  |  |  | - |  |  |  | - |  |  |  | 402 |
Collateralized mortgage obligations and residential mortgage-backed securities |  |  | 188,823 |  |  |  | 2,205 |  |  |  | (2,906 | ) |  |  | 188,122 |
Municipal securities |  |  | 213,556 |  |  |  | 8,212 |  |  |  | (985 | ) |  |  | 220,783 |
Collateralized debt obligations |  |  | 2,177 |  |  |  | - |  |  |  | (1,233 | ) |  |  | 944 |
Total securities available-for-sale |  | $ | 417,839 |  |  | $ | 10,417 |  |  | $ | (5,388 | ) |  | $ | 422,868 |
|  | (Dollars in thousands) |
|  |  |  |  |  | Gross |  |  | Gross |  |  | Estimated |
|  | Cost |  |  | Unrealized |  |  | Unrealized |  |  | Fair |
|  | Basis |  |  | Gains |  |  | Losses |  |  | Value |
December 31, 2020 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Money market fund |  | $ | 52,941 |  |  | $ | - |  |  | $ | - |  |  | $ | 52,941 |
U.S. government sponsored entities |  |  | 7,881 |  |  |  | 3 |  |  |  | (24 | ) |  |  | 7,860 |
Collateralized mortgage obligations and residential mortgage-backed securities |  |  | 151,355 |  |  |  | 3,417 |  |  |  | (36 | ) |  |  | 154,736 |
Municipal securities |  |  | 183,103 |  |  |  | 11,102 |  |  |  | (2 | ) |  |  | 194,203 |
Collateralized debt obligations |  |  | 2,182 |  |  |  | - |  |  |  | (1,253 | ) |  |  | 929 |
Total securities available-for-sale |  | $ | 397,462 |  |  | $ | 14,522 |  |  | $ | (1,315 | ) |  | $ | 410,669 |
Investments Classified by Contractual Maturity Date [Table Text Block] |
|  | (Dollars in thousands) |
|  | Available-for-sale |
|  | Estimated |  |  |  |  |
|  | Fair |  |  | Tax-Equivalent |
March 31, 2021 |  | Value |  |  | Yield (%) |
Due in one year or less |  | $ | 202 |  |  |  | 1.13 |
Due from one to five years |  |  | 3,787 |  |  |  | 4.44 |
Due from five to ten years |  |  | 29,327 |  |  |  | 2.48 |
Due over ten years |  |  | 201,430 |  |  |  | 3.18 |
Collateralized mortgage obligations and residential mortgage-backed securities |  |  | 188,122 |  |  |  | 1.80 |
Total |  | $ | 422,868 |  |  |  | 2.53 |
Schedule of Realized Gain (Loss) [Table Text Block] |
|  | (Dollars in thousands) |
|  | March 31, |  |  | March 31, |
|  | 2021 |  |  | 2020 |
Proceeds |  | $ | 6,904 |  |  | $ | 17,886 |
Gross gains |  |  | 417 |  |  |  | 513 |
Gross losses |  |  | - |  |  |  | (3 | )
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] |
|  | (Dollars in thousands) |
|  | Unrealized gain/(loss) |
Ending balance, December 31, 2020 |  | $ | 10,441 |
Current period change |  |  | (6,461 | )
Ending balance, March 31, 2021 |  | $ | 3,980 |
Unrealized Gain (Loss) on Investments [Table Text Block] |
|  | (Dollars in thousands) |
|  | Less than 12 months |  |  | 12 months or longer |  |  | Total |
|  | Estimated |  |  |  |  |  |  | Estimated |  |  |  |  |  |  | Estimated |  |  |  |  |
|  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |
|  | Value |  |  | Losses |  |  | Value |  |  | Losses |  |  | Value |  |  | Losses |
March 31, 2021 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. government sponsored entities |  | $ | 12,617 |  |  | $ | (264 | ) |  | $ | - |  |  | $ | - |  |  | $ | 12,617 |  |  | $ | (264 | )
Collateralized mortgage obligations and residential mortgage-backed securities |  |  | 112,550 |  |  |  | (2,906 | ) |  |  | - |  |  |  | - |  |  |  | 112,550 |  |  |  | (2,906 | )
Municipal securities |  |  | 56,360 |  |  |  | (985 | ) |  |  | - |  |  |  | - |  |  |  | 56,360 |  |  |  | (985 | )
Collateralized debt obligations |  |  | - |  |  |  | - |  |  |  | 944 |  |  |  | (1,233 | ) |  |  | 944 |  |  |  | (1,233 | )
Total temporarily impaired |  | $ | 181,527 |  |  | $ | (4,155 | ) |  | $ | 944 |  |  | $ | (1,233 | ) |  | $ | 182,471 |  |  | $ | (5,388 | )
Number of securities |  |  |  |  |  |  | 126 |  |  |  |  |  |  |  | 2 |  |  |  |  |  |  |  | 128 |
|  | (Dollars in thousands) |
|  | Less than 12 months |  |  | 12 months or longer |  |  | Total |
|  | Estimated |  |  |  |  |  |  | Estimated |  |  |  |  |  |  | Estimated |  |  |  |  |
|  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |
|  | Value |  |  | Losses |  |  | Value |  |  | Losses |  |  | Value |  |  | Losses |
December 31, 2020 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. government sponsored entities |  | $ | 4,975 |  |  | $ | (24 | ) |  | $ | - |  |  | $ | - |  |  | $ | 4,975 |  |  | $ | (24 | )
Collateralized mortgage obligations and residential mortgage-backed securities |  |  | 11,953 |  |  |  | (36 | ) |  |  | - |  |  |  | - |  |  |  | 11,953 |  |  |  | (36 | )
Municipal securities |  |  | 1,864 |  |  |  | (2 | ) |  |  | - |  |  |  | - |  |  |  | 1,864 |  |  |  | (2 | )
Collateralized debt obligations |  |  | - |  |  |  | - |  |  |  | 929 |  |  |  | (1,253 | ) |  |  | 929 |  |  |  | (1,253 | )
Total temporarily impaired |  | $ | 18,792 |  |  | $ | (62 | ) |  | $ | 929 |  |  | $ | (1,253 | ) |  | $ | 19,721 |  |  | $ | (1,315 | )
Number of securities |  |  |  |  |  |  | 8 |  |  |  |  |  |  |  | 2 |  |  |  |  |  |  |  | 10 |

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