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Goodwill and Intangible Assets | 12 Months Ended
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Dec. 31, 2021
Goodwill and Intangible Assets |
Goodwill and Intangible Assets | 5. Goodwill and Intangible Assets The changes in the carrying value of goodwill are as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | 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
​ The Company evaluated goodwill and determined that no write-down was required for the years ended December 31, 2021 or 2020. ​ The changes in the carrying value of the customer list and core deposit intangibles are as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | 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
​ Core deposit intangibles represent the estimated fair value of acquired customer deposit relationships on the date of acquisition and are amortized over their estimated useful lives. Purchased customer accounts primarily consist of records and files that contain information about investment holdings. The values assigned to customer lists and core deposit intangibles is based upon the application of the income approach. The intangibles are expected to have useful lives of approximately 13 years. The Company recognized $96 and $42 of amortization expense related to its intangible assets for the years ended December 31, 2021 and 2020, respectively. At December 31, 2021, based upon a review of the intangibles, the Company determined that the fair value of the amortizable intangible assets exceeded their carrying values. As of December, 2021, the future amortization expense for amortizable intangible assets for the respective years is as follows: ​
​ | ​ | ​ | ​
2022 |  | $ | 99
2023 | ​ |  | 88
2024 | ​ |  | 79
2025 | ​ |  | 60
2026 | ​ |  | 29
Thereafter | ​ | ​ | 78
Total | ​ | $ | 433
​

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- Definition The entire disclosure for goodwill and intangible assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -URI http://asc.fasb.org/topic&trid=2144416 + Details
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