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Accumulated Other Comprehensive Loss (Tables) | 3 Months Ended
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Mar. 31, 2023
Accumulated Other Comprehensive Loss. |
Schedule of accumulated other comprehensive loss components | The activity in accumulated other comprehensive loss for the three months ended March 31, 2023 and 2022 was as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Accumulated Other Comprehensive Loss(1)
​ | ​ | ​ | ​ | ​ | Unrealized (losses) | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | gains on | ​ | ​ | ​
​ | ​ | Defined Benefit | ​ | available for sale | ​ | ​ | ​
​ |  | Pension Plan |  | securities |  | Total
Balance at December 31, 2022 | ​ | $ | (3,997) | ​ | $ | (28,192) | ​ | $ | (32,189)
Other comprehensive income before reclassifications | ​ |  | — | ​ |  | 2,221 | ​ |  | 2,221
Period change | ​ |  | — | ​ |  | 2,221 | ​ |  | 2,221
Balance at March 31, 2023 | ​ | $ | (3,997) | ​ | $ | (25,971) | ​ | $ | (29,968)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Balance at December 31, 2021 | ​ | $ | (3,901) | ​ | $ | (2,734) | ​ | $ | (6,635)
Other comprehensive loss before reclassifications | ​ |  | — | ​ |  | (10,939) | ​ |  | (10,939)
Period change | ​ |  | — | ​ |  | (10,939) | ​ |  | (10,939)
Balance at March 31, 2022 | ​ | $ | (3,901) | ​ | $ | (13,673) | ​ | $ | (17,574)
(1) All amounts are net of tax. Related income tax expense or benefit is calculated using an income tax rate of 21.0%.

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