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Note 4 - Securities (Tables) | 6 Months Ended
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Jun. 30, 2020
Notes Tables |
Available-for-sale Securities [Table Text Block] |
|  | (Dollars in thousands) |
|  |  |  |  |  | Gross |  |  | Gross |  |  | Estimated |
|  | Cost |  |  | Unrealized |  |  | Unrealized |  |  | Fair |
|  | Basis |  |  | Gains |  |  | Losses |  |  | Value |
June 30, 2020 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Money market fund |  | $ | 21,457 |  |  | $ | - |  |  | $ | - |  |  | $ | 21,457 |
Collateralized mortgage obligations and residential mortgage-backed securities |  |  | 129,789 |  |  |  | 4,284 |  |  |  | - |  |  |  | 134,073 |
Municipal securities |  |  | 129,754 |  |  |  | 8,622 |  |  |  | (2 | ) |  |  | 138,374 |
Collateralized debt obligations |  |  | 2,191 |  |  |  | - |  |  |  | (1,376 | ) |  |  | 815 |
Total securities available-for-sale |  | $ | 283,191 |  |  | $ | 12,906 |  |  | $ | (1,378 | ) |  | $ | 294,719 |
|  | (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 |
June 30, 2020 |  | Value |  |  | Yield (%) |
Due in one year or less |  | $ | 21,457 |  |  |  | 0.11 |
Due from one to five years |  |  | 3,134 |  |  |  | 4.79 |
Due from five to ten years |  |  | 9,857 |  |  |  | 4.00 |
Due over ten years |  |  | 126,198 |  |  |  | 3.55 |
Collateralized mortgage obligations and residential mortgage-backed securities |  |  | 134,073 |  |  |  | 2.31 |
Total |  | $ | 294,719 |  |  |  | 2.76 |
Schedule of Realized Gain (Loss) [Table Text Block] |
|  | (Dollars in thousands) |
|  | June 30, |  |  | June 30, |
|  | 2020 |  |  | 2019 |
Proceeds |  | $ | 35,098 |  |  | $ | 30,281 |
Gross gains |  |  | 1,237 |  |  |  | 733 |
Gross losses |  |  | (60 | ) |  |  | (81 | )
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 |  |  | 4,853 |
Ending balance, June 30, 2020 |  | $ | 9,114 |
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 |
June 30, 2020 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collateralized mortgage obligations and residential mortgage-backed securities |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Municipal securities |  |  | 1,088 |  |  |  | (2 | ) |  |  | - |  |  |  | - |  |  |  | 1,088 |  |  |  | (2 | )
Collateralized debt obligations |  |  | - |  |  |  | - |  |  |  | 815 |  |  |  | (1,376 | ) |  |  | 815 |  |  |  | (1,376 | )
Total temporarily impaired |  | $ | 1,088 |  |  | $ | (2 | ) |  | $ | 815 |  |  | $ | (1,376 | ) |  | $ | 1,903 |  |  | $ | (1,378 | )
Number of securities |  |  |  |  |  |  | 2 |  |  |  |  |  |  |  | 2 |  |  |  |  |  |  |  | 4 |
|  | (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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