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Note 4 - Securities (Tables) | 3 Months Ended
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Mar. 31, 2020
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, 2020 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Money market fund |  | $ | 16,553 |  |  | $ | - |  |  | $ | - |  |  | $ | 16,553 |
Collateralized mortgage obligations and residential mortgage-backed securities |  |  | 152,859 |  |  |  | 6,142 |  |  |  | (63 | ) |  |  | 158,938 |
Municipal securities |  |  | 110,790 |  |  |  | 6,359 |  |  |  | (26 | ) |  |  | 117,123 |
Collateralized debt obligations |  |  | 2,197 |  |  |  | - |  |  |  | (1,424 | ) |  |  | 773 |
Total securities available-for-sale |  | $ | 282,399 |  |  | $ | 12,501 |  |  | $ | (1,513 | ) |  | $ | 293,387 |
|  | (Dollars in thousands) |
|  |  |  |  |  | Gross |  |  | Gross |  |  | Estimated |
|  | Cost |  |  | Unrealized |  |  | Unrealized |  |  | Fair |
|  | Basis |  |  | Gains |  |  | Losses |  |  | Value |
December 31, 2019 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Money market fund |  | $ | 9,670 |  |  | $ | - |  |  | $ | - |  |  | $ | 9,670 |
U.S. government sponsored entities |  |  | 12,994 |  |  |  | 64 |  |  |  | - |  |  |  | 13,058 |
Collateralized mortgage obligations and residential mortgage-backed securities |  |  | 149,339 |  |  |  | 1,745 |  |  |  | (96 | ) |  |  | 150,988 |
Municipal securities |  |  | 97,628 |  |  |  | 4,844 |  |  |  | (45 | ) |  |  | 102,427 |
Collateralized debt obligations |  |  | 2,202 |  |  |  | - |  |  |  | (1,126 | ) |  |  | 1,076 |
Total securities available-for-sale |  | $ | 271,833 |  |  | $ | 6,653 |  |  | $ | (1,267 | ) |  | $ | 277,219 |
Investments Classified by Contractual Maturity Date [Table Text Block] |
|  | (Dollars in thousands) |
|  | Available-for-sale |
|  | Estimated |  |  |  |  |
|  | Fair |  |  | Tax-Equivalent |
March 31, 2020 |  | Value |  |  | Yield (%) |
Due in one year or less |  | $ | 16,903 |  |  |  | 6.17 |
Due from one to five years |  |  | 3,122 |  |  |  | 4.79 |
Due from five to ten years |  |  | 4,554 |  |  |  | 4.39 |
Due over ten years |  |  | 109,870 |  |  |  | 3.93 |
Collateralized mortgage obligations and residential mortgage-backed securities |  |  | 158,938 |  |  |  | 2.25 |
Total |  | $ | 293,387 |  |  |  | 3.17 |
Schedule of Realized Gain (Loss) [Table Text Block] |
|  | (Dollars in thousands) |
|  | March 31, |  |  | March 31, |
|  | 2020 |  |  | 2019 |
Proceeds |  | $ | 17,886 |  |  | $ | 13,518 |
Gross gains |  |  | 513 |  |  |  | 356 |
Gross losses |  |  | (3 | ) |  |  | (4 | )
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] |
|  | (Dollars in thousands) |
|  | Unrealized gain/(loss) |
Ending balance, December 31, 2019 |  | $ | 4,261 |
Current period change |  |  | 4,425 |
Ending balance, March 31, 2020 |  | $ | 8,686 |
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, 2020 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collateralized mortgage obligations and residential mortgage-backed securities |  |  | 2,480 |  |  |  | (63 | ) |  |  | - |  |  |  | - |  |  |  | 2,480 |  |  |  | (63 | )
Municipal securities |  |  | 3,578 |  |  |  | (26 | ) |  |  | - |  |  |  | - |  |  |  | 3,578 |  |  |  | (26 | )
Collateralized debt obligations |  |  | - |  |  |  | - |  |  |  | 773 |  |  |  | (1,424 | ) |  |  | 773 |  |  |  | (1,424 | )
Total temporarily impaired |  | $ | 6,058 |  |  | $ | (89 | ) |  | $ | 773 |  |  | $ | (1,424 | ) |  | $ | 6,831 |  |  | $ | (1,513 | )
Number of securities |  |  |  |  |  |  | 5 |  |  |  |  |  |  |  | 2 |  |  |  |  |  |  |  | 7 |
|  | (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, 2019 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. government sponsored entities |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | - |
Collateralized mortgage obligations and residential mortgage-backed securities |  |  | 8,859 |  |  |  | (31 | ) |  |  | 15,065 |  |  |  | (65 | ) |  |  | 23,924 |  |  |  | (96 | )
Municipal securities |  |  | 4,367 |  |  |  | (45 | ) |  |  | - |  |  |  | - |  |  |  | 4,367 |  |  |  | (45 | )
Collateralized debt obligations |  |  | - |  |  |  | - |  |  |  | 1,076 |  |  |  | (1,126 | ) |  |  | 1,076 |  |  |  | (1,126 | )
Total temporarily impaired |  | $ | 13,226 |  |  | $ | (76 | ) |  | $ | 16,141 |  |  | $ | (1,191 | ) |  | $ | 29,367 |  |  | $ | (1,267 | )
Number of securities |  |  |  |  |  |  | 11 |  |  |  |  |  |  |  | 17 |  |  |  |  |  |  |  | 28 |

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