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Accumulated Other Comprehensive Loss (Tables) | 12 Months Ended
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Dec. 31, 2021
Accumulated Other Comprehensive Loss. |
Schedule of accumulated other comprehensive loss components | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Accumulated Other Comprehensive Loss(1)
​ | ​ | ​ | ​ | ​ | Unrealized (losses) | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | gains on | ​ | ​ | ​
​ | ​ | Defined Benefit | ​ | available for sale | ​ | ​ | ​
​ |  | Pension Plan |  | securities |  | Total
Balance at December 31, 2020 | ​ | $ | (4,784) | ​ | $ | 993 | ​ | $ | (3,791)
Other comprehensive gain (loss) before reclassifications | ​ |  | 600 | ​ |  | (3,730) | ​ |  | (3,130)
Amounts reclassified from accumulated other comprehensive loss | ​ |  | 283 | ​ |  | 3 | ​ |  | 286
Period change | ​ |  | 883 | ​ |  | (3,727) | ​ |  | (2,844)
Balance at December 31, 2021 | ​ | $ | (3,901) | ​ | $ | (2,734) | ​ | $ | (6,635)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Balance at December 31, 2019 | ​ | $ | (3,909) | ​ | $ | (195) | ​ | $ | (4,104)
Other comprehensive (loss) gain before reclassifications | ​ |  | (1,100) | ​ |  | 1,165 | ​ |  | 65
Amounts reclassified from accumulated other comprehensive loss | ​ |  | 225 | ​ |  | 23 | ​ |  | 248
Period change | ​ |  | (875) | ​ |  | 1,188 | ​ |  | 313
Balance at December 31, 2020 | ​ | $ | (4,784) | ​ | $ | 993 | ​ | $ | (3,791)
(1) | All amounts are net of tax. Related income tax expense or benefit is calculated using an income tax rate of 21.0% in fiscal 2021 and 21.0% in fiscal 2020.
Schedule of accumulated other comprehensive loss activity | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Amount Reclassified from | ​ | ​
​ | ​ | Accumulated Other Comprehensive | ​ | ​
​ | ​ | Income for the Year Ended | ​ | Affected Line Item in the Consolidated
​ | ​ | December 31, | ​ | Statement of Income
​ | ​ | 2021 |  | 2020 |  | ​
Securities available for sale(1): | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Net securities losses reclassified into earnings | ​ | $ | (4) | ​ | $ | (29) |  | Net realized loss on sales and calls of securities
Related income tax expense | ​ |  | 1 | ​ |  | 6 |  | Provision for income taxes
Net effect on accumulated other comprehensive loss for the period | ​ |  | (3) | ​ |  | (23) |  |
Defined benefit pension plan(2): | ​ |  |  | ​ |  |  |  |
Amortization of net loss and prior service costs | ​ |  | (358) | ​ |  | (285) |  | Other noninterest expense
Related income tax expense | ​ |  | 75 | ​ |  | 60 |  | Provision for income taxes
Net effect on accumulated other comprehensive loss for the period | ​ |  | (283) | ​ |  | (225) |  |
Total reclassifications for the period | ​ | $ | (286) | ​ | $ | (248) |  |
(1) | For additional details related to unrealized gains and losses on securities and related amounts reclassified from accumulated other comprehensive loss see Note 3, “Available for Sale Securities.”
(2) | Included in the computation of net periodic pension cost. See Note 10, “Employee Benefits” for additional details.

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