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Accumulated Other Comprehensive Income (Tables) | 9 Months Ended
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Sep. 30, 2022
Accumulated Other Comprehensive Income |
Schedule of Accumulated Other Comprehensive Income | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Unrealized | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | gains and | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | (Losses) on available- | ​ | 2022
​ | ​ | for-sale | ​ | Retirement | ​ | ​ | ​
(Dollar amounts in thousands) |  | Securities |  | plans |  | Total
Beginning balance, July 1, | ​ | $ | (109,159) | ​ | $ | (17,471) | ​ | $ | (126,630)
Change in other comprehensive income (loss) before reclassification | ​ |  | (41,060) | ​ |  | — | ​ |  | (41,060)
Amounts reclassified from accumulated other comprehensive income | ​ |  | — | ​ |  | 315 | ​ |  | 315
Net current period other comprehensive income (loss) | ​ |  | (41,060) | ​ |  | 315 | ​ |  | (40,745)
Ending balance, September 30, | ​ | $ | (150,219) | ​ | $ | (17,156) | ​ | $ | (167,375)
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Unrealized | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | gains and | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | (Losses) on available- | ​ | 2022
​ | ​ | for-sale | ​ | Retirement | ​ | ​ | ​
(Dollar amounts in thousands) |  | Securities |  | plans |  | Total
Beginning balance, January 1, | ​ | $ | 15,674 | ​ | $ | (18,100) | ​ | $ | (2,426)
Change in other comprehensive income (loss) before reclassification | ​ |  | (165,889) | ​ |  | — | ​ |  | (165,889)
Amounts reclassified from accumulated other comprehensive income | ​ |  | (4) | ​ |  | 944 | ​ |  | 940
Net current period other comprehensive income (loss) | ​ |  | (165,893) | ​ |  | 944 | ​ |  | (164,949)
Ending balance, September 30, | ​ | $ | (150,219) | ​ | $ | (17,156) | ​ | $ | (167,375)
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Unrealized | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | gains and | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | (Losses) on available- | ​ | 2021
​ | ​ | for-sale | ​ | Retirement | ​ |  | ​
(Dollar amounts in thousands) |  | Securities |  | plans |  | Total
Beginning balance, July 1, | ​ | $ | 24,866 | ​ | $ | (23,454) | ​ | $ | 1,412
Change in other comprehensive income (loss) before reclassification | ​ |  | (2,981) | ​ |  | — | ​ |  | (2,981)
Amounts reclassified from accumulated other comprehensive income | ​ |  | (4) | ​ |  | 471 | ​ |  | 467
Net current period other comprehensive income (loss) | ​ |  | (2,985) | ​ |  | 471 | ​ |  | (2,514)
Ending balance, September 30, | ​ | $ | 21,881 | ​ | $ | (22,983) | ​ | $ | (1,102)
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Unrealized | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | gains and | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | (Losses) on available- | ​ | 2021
​ | ​ | for-sale | ​ | Retirement | ​ |  | ​
(Dollar amounts in thousands) |  | Securities |  | plans |  | Total
Beginning balance, January 1, | ​ | $ | 34,162 | ​ | $ | (24,398) | ​ | $ | 9,764
Change in other comprehensive income (loss) before reclassification | ​ |  | (12,198) | ​ |  | — | ​ |  | (12,198)
Amounts reclassified from accumulated other comprehensive income | ​ |  | (83) | ​ |  | 1,415 | ​ |  | 1,332
Net current period other comprehensive income (loss) | ​ |  | (12,281) | ​ |  | 1,415 | ​ |  | (10,866)
Ending balance, September 30, | ​ | $ | 21,881 | ​ | $ | (22,983) | ​ | $ | (1,102)
Schedule Of Accumulated Other Comprehensive Income Loss Other Than Temporary Impairment | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Balance at | ​ | Current Period | ​ | Balance at
(Dollar amounts in thousands) |  | 7/1/2022 |  | Change |  | 9/30/2022
Unrealized gains (losses) on securities available-for-sale without other than temporary impairment | ​ | $ | (111,474) | ​ | $ | (41,078) | ​ | $ | (152,552)
Unrealized gains (losses) on securities available-for-sale with other than temporary impairment | ​ |  | 2,315 | ​ |  | 18 | ​ |  | 2,333
Total unrealized loss on securities available-for-sale | ​ | $ | (109,159) | ​ | $ | (41,060) | ​ | $ | (150,219)
Unrealized gain (loss) on retirement plans | ​ |  | (17,471) | ​ |  | 315 | ​ |  | (17,156)
TOTAL | ​ | $ | (126,630) | ​ | $ | (40,745) | ​ | $ | (167,375)
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Balance at | ​ | Current Period | ​ | Balance at
(Dollar amounts in thousands) |  | 1/1/2022 |  | Change |  | 9/30/2022
Unrealized gains (losses) on securities available-for-sale without other than temporary impairment | ​ | $ | 13,155 | ​ | $ | (165,707) | ​ | $ | (152,552)
Unrealized gains (losses) on securities available-for-sale with other than temporary impairment | ​ |  | 2,519 | ​ |  | (186) | ​ |  | 2,333
Total unrealized gain (loss) on securities available-for-sale | ​ | $ | 15,674 | ​ | $ | (165,893) | ​ | $ | (150,219)
Unrealized loss on retirement plans | ​ |  | (18,100) | ​ |  | 944 | ​ |  | (17,156)
TOTAL | ​ | $ | (2,426) | ​ | $ | (164,949) | ​ | $ | (167,375)
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Balance at | ​ | Current Period | ​ | Balance at
(Dollar amounts in thousands) |  | 7/1/2021 |  | Change |  | 9/30/2021
Unrealized gains (losses) on securities available-for-sale without other than temporary impairment | ​ | $ | 22,417 | ​ | $ | (2,969) | ​ | $ | 19,448
Unrealized gains (losses) on securities available-for-sale with other than temporary impairment | ​ |  | 2,449 | ​ |  | (16) | ​ |  | 2,433
Total unrealized gain (loss) on securities available-for-sale | ​ | $ | 24,866 | ​ | $ | (2,985) | ​ | $ | 21,881
Unrealized loss on retirement plans | ​ |  | (23,454) | ​ |  | 471 | ​ |  | (22,983)
TOTAL | ​ | $ | 1,412 | ​ | $ | (2,514) | ​ | $ | (1,102)
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Balance at | ​ | Current Period | ​ | Balance at
(Dollar amounts in thousands) |  | 1/1/2021 |  | Change |  | 9/30/2021
Unrealized gains (losses) on securities available-for-sale without other than temporary impairment | ​ | $ | 31,810 | ​ | $ | (12,362) | ​ | $ | 19,448
Unrealized gains (losses) on securities available-for-sale with other than temporary impairment | ​ |  | 2,352 | ​ |  | 81 | ​ |  | 2,433
Total unrealized income (loss) on securities available-for-sale | ​ | $ | 34,162 | ​ | $ | (12,281) | ​ | $ | 21,881
Unrealized gain (loss) on retirement plans | ​ |  | (24,398) | ​ |  | 1,415 | ​ |  | (22,983)
TOTAL | ​ | $ | 9,764 | ​ | $ | (10,866) | ​ | $ | (1,102)
Accumulated Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent |
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Three Months Ended September 30, 2022 |  | ​ |
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 | ​ | $ | (420) | (a) | ​ | Salary and benefits
retirement plan items | ​ |  | 105 |  | ​ | Income tax expense
​ | ​ | $ | (315) |  | ​ | Net of tax
Total reclassifications for the period | ​ | $ | (315) |  | ​ | Net of tax
​
(a) | Included in the computation of net periodic benefit cost. (see Footnote 6 for additional details).
​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Nine Months Ended September 30, 2022 |  | ​ |
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 | ​ | $ | 5 |  | ​ | Net securities gains (losses)
on available-for-sale | ​ |  | (1) |  | ​ | Income tax expense
securities | ​ | $ | 4 |  | ​ | Net of tax
​ | ​ | ​ | ​ | ​ | ​ | ​
Amortization of | ​ | $ | (1,260) | (a) | ​ | Salary and benefits
retirement plan items | ​ |  | 316 |  | ​ | Income tax expense
​ | ​ | $ | (944) |  | ​ | Net of tax
Total reclassifications for the period | ​ | $ | (940) |  | ​ | Net of tax
(a) | Included in the computation of net periodic benefit cost. (see Footnote 6 for additional details).
​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended September 30, 2021 | ​ | ​ | ​
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 | ​ | $ | 5 |  | ​ | Net securities gains (losses)
on available-for-sale | ​ |  | (1) |  | ​ | Income tax expense
securities | ​ | $ | 4 |  | ​ | Net of tax
​ | ​ | ​ | ​ | ​ | ​ | ​
Amortization of | ​ | $ | (518) | (a) | ​ | Salary and benefits
retirement plan items | ​ |  | 47 |  | ​ | Income tax expense
​ | ​ | $ | (471) |  | ​ | Net of tax
Total reclassifications for the period | ​ | $ | (467) |  | ​ | Net of tax
(a) | Included in the computation of net periodic benefit cost. (see Footnote 6 for additional details).
​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Nine Months Ended September 30, 2021 | ​ | ​ | ​
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 | ​ | $ | 111 |  | ​ | Net securities gains (losses)
on available-for-sale | ​ |  | (28) |  | ​ | Income tax expense
securities | ​ | $ | 83 |  | ​ | Net of tax
​ | ​ | ​ | ​ | ​ | ​ | ​
Amortization of | ​ | $ | (1,554) | (a) | ​ | Salary and benefits
retirement plan items | ​ |  | 139 |  | ​ | Income tax expense
​ | ​ | $ | (1,415) |  | ​ | Net of tax
Total reclassifications for the period | ​ | $ | (1,332) |  | ​ | Net of tax
(a) | Included in the computation of net periodic benefit cost. (see Footnote 6 for additional details).

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