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Goodwill and Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2021
Goodwill and Intangible Assets |
Schedule of changes in the carrying value of goodwill | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | Year Ended
​ | ​ | ​ | December 31,
​ |  |  | 2021 |  | 2020
Beginning balance | ​ | ​ | $ | 1,410 | ​ | $ | 1,410
Acquisition activity | ​ | ​ |  | 825 | ​ |  | —
​ | ​ | ​ |  |  | ​ |  |
Ending balance | ​ | ​ | $ | 2,235 | ​ | $ | 1,410
​ | ​ | ​ |  |  | ​ |  |
Accumulated impairment | ​ | ​ | $ | 1,116 | ​ | $ | 1,116
Schedule of changes in the carrying value of customer list and core deposit intangibles | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Years Ended
​ | ​ | December 31,
​ |  | 2021 |  | 2020
Beginning balance | ​ | $ | 199 | ​ | $ | 241
Acquisition activity | ​ | ​ | 330 | ​ | ​ | —
Amortization | ​ |  | (96) | ​ |  | (42)
​ | ​ |  |  | ​ |  |
Ending balance | ​ | $ | 433 | ​ | $ | 199
Accumulated amortization and impairment | ​ | $ | 844 | ​ | $ | 748
Schedule of future amortization expense for amortizable intangible assets | ​
​ | ​ | ​ | ​
2022 |  | $ | 99
2023 | ​ |  | 88
2024 | ​ |  | 79
2025 | ​ |  | 60
2026 | ​ |  | 29
Thereafter | ​ | ​ | 78
Total | ​ | $ | 433

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