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Accumulated Other Comprehensive Income (Tables) | 9 Months Ended
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Sep. 30, 2021
Accumulated Other Comprehensive Income [Abstract] |
Schedule of Accumulated Other Comprehensive Income | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ | ​ |  | Unrealized gains |  |  | ​
​ | ​ | ​ | ​ | (losses) on securities | ​ | ​
​ | ​ | Unrealized | ​ | transferred from | ​ | Accumulated
​ | ​ | gains (losses) on | ​ | Available-for-sale | ​ | other
​ | ​ | available for sale | ​ | to | ​ | comprehensive
(Dollars in thousands) | ​ | securities | ​ | Held-to-maturity | ​ | income (loss)
Balance, December 31, 2020 | ​ | $ | 1,529 | ​ | $ | — | ​ | $ | 1,529
Other comprehensive loss | ​ |  | (1,300) | ​ |  | — | ​ |  | (1,300)
Reclassification of gains recognized | ​ | ​ | (1) | ​ |  | — | ​ |  | (1)
Balance, September 30, 2021 | ​ | $ | 228 | ​ | $ | — | ​ | $ | 228
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Balance, December 31, 2019 | ​ | $ | 218 | ​ | $ | (11) | ​ | $ | 207
Other comprehensive income | ​ |  | 1,945 | ​ |  | 11 | ​ |  | 1,956
Reclassification of (gain) recognized | ​ |  | (259) | ​ |  | — | ​ |  | (259)
Balances, September 30, 2020 | ​ | $ | 1,904 | ​ | $ | — | ​ | $ | 1,904

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6450520&loc=d3e32583-110901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=121641772&loc=SL7669686-108580 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 45 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900 + Details
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