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Note 6 - Goodwill and Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2020
Notes Tables |
Schedule of Goodwill [Table Text Block] |
(Dollars in thousands) |  | 2020 |  |  | 2019 |
Balance, beginning of year |  | $ | 52,870 |  |  | $ | 13,728 |
Acquired goodwill from merger with County Bank Corp. |  |  | - |  |  |  | 39,142 |
Goodwill adjustment from merger with County Bank Corp. |  |  | (277 | ) |  |  | - |
Acquired goodwill from merger with Community Shores Bank Corporation |  |  | 7,913 |  |  |  | - |
Balance, end of year |  | $ | 60,506 |  |  | $ | 52,870 |
Schedule of Acquired Finite-Lived Intangible Assets by Major Class [Table Text Block] |
|  | 2020 |  |  | 2019 |
|  | Gross |  |  |  |  |  |  | Gross |  |  |  |  |
|  | Carrying |  |  | Accumulated |  |  | Carrying |  |  | Accumulated |
(Dollars in thousands) |  | Amount |  |  | Amortization |  |  | Amount |  |  | Amortization |
Core deposit intangible |  | $ | 7,120 |  |  | $ | 1,851 |  |  | $ | 6,359 |  |  | $ | 353 |
Finite-lived Intangible Assets Amortization Expense [Table Text Block] |
2021 |  | $ | 1,307 |
2022 |  |  | 1,153 |
2023 |  |  | 955 |
2024 |  |  | 757 |
2025 |  |  | 560 |
Thereafter |  |  | 537 |
Total |  | $ | 5,269 |

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