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Accumulated Other Comprehensive Income (Tables) | 6 Months Ended
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Jun. 30, 2024
Accumulated Other Comprehensive Income |
Schedule of Accumulated Other Comprehensive Income | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Unrealized | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | gains and | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | (Losses) on available- | ​ | 2024
​ | ​ | for-sale | ​ | Retirement | ​ | ​ | ​
(Dollar amounts in thousands) |  | Securities |  | plans |  | Total
Beginning balance, April 1, | ​ | $ | (129,096) | ​ | $ | (9,014) | ​ | $ | (138,110)
Change in other comprehensive income (loss) before reclassification | ​ |  | 3,535 | ​ |  | — | ​ |  | 3,535
Amounts reclassified from accumulated other comprehensive income | ​ |  | — | ​ |  | 74 | ​ |  | 74
Net current period other comprehensive income (loss) | ​ |  | 3,535 | ​ |  | 74 | ​ |  | 3,609
Ending balance, June 30, | ​ | $ | (125,561) | ​ | $ | (8,940) | ​ | $ | (134,501)
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Unrealized | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | gains and | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | (Losses) on available- | ​ | 2024
​ | ​ | for-sale | ​ | Retirement | ​ | ​ | ​
(Dollar amounts in thousands) |  | Securities |  | plans |  | Total
Beginning balance, January 1, | ​ | $ | (118,000) | ​ | $ | (9,087) | ​ | $ | (127,087)
Change in other comprehensive income (loss) before reclassification | ​ |  | (7,561) | ​ |  | — | ​ |  | (7,561)
Amounts reclassified from accumulated other comprehensive income | ​ |  | — | ​ |  | 147 | ​ |  | 147
Net current period other comprehensive income (loss) | ​ |  | (7,561) | ​ |  | 147 | ​ |  | (7,414)
Ending balance, June 30, | ​ | $ | (125,561) | ​ | $ | (8,940) | ​ | $ | (134,501)
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Unrealized | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | gains and | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | (Losses) on available- | ​ | 2023
​ | ​ | for-sale | ​ | Retirement | ​ |  | ​
(Dollar amounts in thousands) |  | Securities |  | plans |  | Total
Beginning balance, April 1, | ​ | $ | (114,658) | ​ | $ | (10,931) | ​ | $ | (125,589)
Change in other comprehensive income (loss) before reclassification | ​ |  | (15,808) | ​ |  | — | ​ |  | (15,808)
Amounts reclassified from accumulated other comprehensive income | ​ |  | — | ​ |  | 147 | ​ |  | 147
Net current period other comprehensive income (loss) | ​ |  | (15,808) | ​ |  | 147 | ​ |  | (15,661)
Ending balance, June 30, | ​ | $ | (130,466) | ​ | $ | (10,784) | ​ | $ | (141,250)
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Unrealized | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | gains and | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | (Losses) on available- | ​ | 2023
​ | ​ | for-sale | ​ | Retirement | ​ |  | ​
(Dollar amounts in thousands) |  | Securities |  | plans |  | Total
Beginning balance, January 1, | ​ | $ | (128,896) | ​ | $ | (11,078) | ​ | $ | (139,974)
Change in other comprehensive income (loss) before reclassification | ​ |  | (1,570) | ​ |  | — | ​ |  | (1,570)
Amounts reclassified from accumulated other comprehensive income | ​ |  | — | ​ |  | 294 | ​ |  | 294
Net current period other comprehensive income (loss) | ​ |  | (1,570) | ​ |  | 294 | ​ |  | (1,276)
Ending balance, June 30, | ​ | $ | (130,466) | ​ | $ | (10,784) | ​ | $ | (141,250)
Schedule Of Accumulated Other Comprehensive Income Loss Other Than Temporary Impairment | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Balance at | ​ | Current Period | ​ | Balance at
(Dollar amounts in thousands) |  | 4/1/2024 |  | Change |  | 6/30/2024
Unrealized gains (losses) on securities available-for-sale without other than temporary impairment | ​ | $ | (131,262) | ​ | $ | 3,532 | ​ | $ | (127,730)
Unrealized gains (losses) on securities available-for-sale with other than temporary impairment | ​ |  | 2,166 | ​ |  | 3 | ​ |  | 2,169
Total unrealized loss on securities available-for-sale | ​ | $ | (129,096) | ​ | $ | 3,535 | ​ | $ | (125,561)
Unrealized gain (loss) on retirement plans | ​ |  | (9,014) | ​ |  | 74 | ​ |  | (8,940)
TOTAL | ​ | $ | (138,110) | ​ | $ | 3,609 | ​ | $ | (134,501)
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Balance at | ​ | Current Period | ​ | Balance at
(Dollar amounts in thousands) |  | 1/1/2024 |  | Change |  | 6/30/2024
Unrealized gains (losses) on securities available-for-sale without other than temporary impairment | ​ | $ | (120,252) | ​ | $ | (7,478) | ​ | $ | (127,730)
Unrealized gains (losses) on securities available-for-sale with other than temporary impairment | ​ |  | 2,252 | ​ |  | (83) | ​ |  | 2,169
Total unrealized gain (loss) on securities available-for-sale | ​ | $ | (118,000) | ​ | $ | (7,561) | ​ | $ | (125,561)
Unrealized gain (loss) on retirement plans | ​ |  | (9,087) | ​ |  | 147 | ​ |  | (8,940)
TOTAL | ​ | $ | (127,087) | ​ | $ | (7,414) | ​ | $ | (134,501)
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Balance at | ​ | Current Period | ​ | Balance at
(Dollar amounts in thousands) |  | 4/1/2023 |  | Change |  | 6/30/2023
Unrealized gains (losses) on securities available-for-sale without other than temporary impairment | ​ | $ | (116,844) | ​ | $ | (15,827) | ​ | $ | (132,671)
Unrealized gains (losses) on securities available-for-sale with other than temporary impairment | ​ |  | 2,186 | ​ |  | 19 | ​ |  | 2,205
Total unrealized gain (loss) on securities available-for-sale | ​ | $ | (114,658) | ​ | $ | (15,808) | ​ | $ | (130,466)
Unrealized loss on retirement plans | ​ |  | (10,931) | ​ |  | 147 | ​ |  | (10,784)
TOTAL | ​ | $ | (125,589) | ​ | $ | (15,661) | ​ | $ | (141,250)
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Balance at | ​ | Current Period | ​ | Balance at
(Dollar amounts in thousands) |  | 1/1/2023 |  | Change |  | 6/30/2023
Unrealized gains (losses) on securities available-for-sale without other than temporary impairment | ​ | $ | (131,135) | ​ | $ | (1,536) | ​ | $ | (132,671)
Unrealized gains (losses) on securities available-for-sale with other than temporary impairment | ​ |  | 2,239 | ​ |  | (34) | ​ |  | 2,205
Total unrealized income (loss) on securities available-for-sale | ​ | $ | (128,896) | ​ | $ | (1,570) | ​ | $ | (130,466)
Unrealized gain (loss) on retirement plans | ​ |  | (11,078) | ​ |  | 294 | ​ |  | (10,784)
TOTAL | ​ | $ | (139,974) | ​ | $ | (1,276) | ​ | $ | (141,250)
Accumulated Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Three Months Ended June 30, 2024 |  | ​ |
Details about accumulated | ​ | Amount reclassified from | ​ | ​ | Affected line item in
other comprehensive | ​ | accumulated other | ​ | ​ | the statement where
income components |  | comprehensive income |  | ​ | net income is presented
​ | ​ | (in thousands) | ​ | ​ | ​
Unrealized gains and losses | ​ | $ | — |  | ​ | Net securities gains (losses)
on available-for-sale | ​ |  | — |  | ​ | Income tax expense
securities | ​ | $ | — |  | ​ | Net of tax
​ | ​ | ​ | ​ | ​ | ​ | ​
Amortization of | ​ | $ | (195) | (a) | ​ | Salary and benefits
retirement plan items | ​ |  | 48 |  | ​ | Income tax expense
​ | ​ | $ | (147) |  | ​ | Net of tax
Total reclassifications for the period | ​ | $ | (147) |  | ​ | Net of tax
| (a) | Included in the computation of net periodic benefit cost. (see Footnote 7 for additional details).
​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Six Months Ended June 30, 2024 |  | ​ |
Details about accumulated | ​ | Amount reclassified from | ​ | ​ | Affected line item in
other comprehensive | ​ | accumulated other | ​ | ​ | the statement where
income components |  | comprehensive income |  | ​ | net income is presented
​ | ​ | (in thousands) | ​ | ​ | ​
Unrealized gains and losses | ​ | $ | — |  | ​ | Net securities gains (losses)
on available-for-sale | ​ |  | — |  | ​ | Income tax expense
securities | ​ | $ | — |  | ​ | Net of tax
​ | ​ | ​ | ​ | ​ | ​ | ​
Amortization of | ​ | $ | (98) | (a) | ​ | Salary and benefits
retirement plan items | ​ |  | 24 |  | ​ | Income tax expense
​ | ​ | $ | (74) |  | ​ | Net of tax
Total reclassifications for the period | ​ | $ | (74) |  | ​ | Net of tax
| (a) | Included in the computation of net periodic benefit cost. (see Footnote 7 for additional details).
​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended June 30, 2023 | ​ | ​ | ​
Details about accumulated | ​ | Amount reclassified from | ​ | ​ | Affected line item in
other comprehensive | ​ | accumulated other | ​ | ​ | the statement where
income components |  | comprehensive income |  | ​ | net income is presented
​ |  | (in thousands) |  | ​ | ​
Unrealized gains and losses | ​ | $ | — |  | ​ | Net securities gains (losses)
on available-for-sale | ​ |  | — |  | ​ | Income tax expense
securities | ​ | $ | — |  | ​ | Net of tax
​ | ​ | ​ | ​ | ​ | ​ | ​
Amortization of | ​ | $ | (196) | (a) | ​ | Salary and benefits
retirement plan items | ​ |  | 49 |  | ​ | Income tax expense
​ | ​ | $ | (147) |  | ​ | Net of tax
Total reclassifications for the period | ​ | $ | (147) |  | ​ | Net of tax
| (a) | Included in the computation of net periodic benefit cost. (see Footnote 7 for additional details).
​ ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Six Months Ended June 30, 2023 | ​ | ​ | ​
Details about accumulated | ​ | Amount reclassified from | ​ | ​ | Affected line item in
other comprehensive | ​ | accumulated other | ​ | ​ | the statement where
income components |  | comprehensive income |  | ​ | net income is presented
​ |  | (in thousands) |  | ​ | ​
Unrealized gains and losses | ​ | $ | — |  | ​ | Net securities gains (losses)
on available-for-sale | ​ |  | — |  | ​ | Income tax expense
securities | ​ | $ | — |  | ​ | Net of tax
​ | ​ | ​ | ​ | ​ | ​ | ​
Amortization of | ​ | $ | (392) | (a) | ​ | Salary and benefits
retirement plan items | ​ |  | 98 |  | ​ | Income tax expense
​ | ​ | $ | (294) |  | ​ | Net of tax
Total reclassifications for the period | ​ | $ | (294) |  | ​ | Net of tax
| (a) | Included in the computation of net periodic benefit cost. (see Footnote 7 for additional details).
​

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