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Note 3 - Securities (Tables) | 12 Months Ended
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Dec. 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 |
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 |
|  | (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 |
December 31, 2020 |  | Value |  |  | Yield (%) |
Due in one year or less |  | $ | 52,941 |  |  |  | 0.03 |
Due from one to five years |  |  | 3,779 |  |  |  | 4.20 |
Due from five to ten years |  |  | 23,344 |  |  |  | 2.67 |
Due over ten years |  |  | 175,869 |  |  |  | 3.37 |
Collateralized mortgage obligations and residential mortgage-backed securities |  |  | 154,736 |  |  |  | 1.87 |
Total |  | $ | 410,669 |  |  |  | 2.34 |
Schedule of Realized Gain (Loss) [Table Text Block] |
|  | (Dollars in thousands) |
|  | December 31, |  |  | December 31, |
|  | 2020 |  |  | 2019 |
Proceeds |  | $ | 51,350 |  |  | $ | 37,939 |
Gross gains |  |  | 2,407 |  |  |  | 888 |
Gross losses |  |  | (59 | ) |  |  | (267 | )
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 |  |  | 6,180 |
Ending balance, December 31, 2020 |  | $ | 10,441 |
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 |
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 |
|  | (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, 2018 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
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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