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Accumulated Other Comprehensive Income (Loss) (Tables) | 6 Months Ended
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Jun. 30, 2024
Accumulated Other Comprehensive Income (Loss): |
Schedule of changes in accumulated other comprehensive income (loss) by component | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | For the three months ended June 30, 2024
​ | ​ | Unrealized Gains (Losses) on | ​ | ​ | ​ | ​ | Fair Value | ​ | ​ | ​
​ |  | Available for Sale |  | Cash flow |  | Defined Benefit |  | Option Elected | ​ | ​
​ |  | Securities |  | Hedges |  | Pension Items |  | on Liabilities |  | Total
​ |  | (In thousands)
Beginning balance, net of tax | ​ | $ | (54,916) | ​ | $ | 17,897 | ​ | $ | (444) | ​ | $ | 1,647 | ​ | $ | (35,816)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Other comprehensive income (loss) before reclassifications, net of tax |  | (1,994) | ​ |  | 3,026 | ​ |  | — | ​ |  | (35) | ​ |  | 997
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Amounts reclassified from accumulated other comprehensive income (loss), net of tax |  | — | ​ |  | (4,434) | ​ |  | (63) | ​ |  | — | ​ |  | (4,497)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Net current period other comprehensive income (loss), net of tax |  | (1,994) | ​ |  | (1,408) | ​ |  | (63) | ​ |  | (35) | ​ |  | (3,500)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Ending balance, net of tax | ​ | $ | (56,910) | ​ | $ | 16,489 | ​ | $ | (507) | ​ | $ | 1,612 | ​ | $ | (39,316)
​ ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | For the three months ended June 30, 2023
​ | ​ | Unrealized Gains (Losses) on | ​ | ​ | ​ | ​ | Fair Value | ​ | ​ | ​
​ |  | Available for Sale |  | Cash flow |  | Defined Benefit |  | Option Elected | ​ | ​
​ |  | Securities |  | Hedges |  | Pension Items |  | on Liabilities |  | Total
​ |  | (In thousands)
Beginning balance, net of tax | ​ | $ | (59,119) | ​ | $ | 20,240 | ​ | $ | (344) | ​ | $ | 1,439 | ​ | $ | (37,784)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Other comprehensive income (loss) before reclassifications, net of tax |  | (7,349) | ​ |  | 10,991 | ​ |  | — | ​ |  | (81) | ​ |  | 3,561
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Amounts reclassified from accumulated other comprehensive income (loss), net of tax |  | 2,945 | ​ |  | (4,672) | ​ |  | (69) | ​ |  | — | ​ |  | (1,796)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Net current period other comprehensive income (loss), net of tax |  | (4,404) | ​ |  | 6,319 | ​ |  | (69) | ​ |  | (81) | ​ |  | 1,765
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Ending balance, net of tax | ​ | $ | (63,523) | ​ | $ | 26,559 | ​ | $ | (413) | ​ | $ | 1,358 | ​ | $ | (36,019)
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | For the six months ended June 30, 2024
​ |  | Unrealized Gains (Losses) on | ​ | ​ | ​ | ​ | Fair Value | ​ | ​ | ​
​ |  | Available for Sale |  | Cash flow |  | Defined Benefit |  | Option Elected | ​ | ​ | ​
​ |  | Securities |  | Hedges |  | Pension Items |  | on Liabilities |  | Total
​ |  | (In thousands)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Beginning balance, net of tax | ​ | $ | (54,744) | ​ | $ | 14,796 | ​ | $ | (381) | ​ | $ | 1,678 | ​ | $ | (38,651)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Other comprehensive income (loss) before reclassifications, net of tax |  | (2,166) | ​ |  | 10,857 | ​ |  | — | ​ |  | (66) | ​ |  | 8,625
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Amounts reclassified from accumulated other comprehensive income (loss), net of tax |  | — | ​ |  | (9,164) | ​ |  | (126) | ​ |  | — | ​ |  | (9,290)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Net current period other comprehensive income (loss), net of tax |  | (2,166) | ​ |  | 1,693 | ​ |  | (126) | ​ |  | (66) | ​ |  | (665)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Ending balance, net of tax | ​ | $ | (56,910) | ​ | $ | 16,489 | ​ | $ | (507) | ​ | $ | 1,612 | ​ | $ | (39,316)
​ ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | For the six months ended June 30, 2023
​ |  | Unrealized Gains (Losses) on | ​ | ​ | ​ | ​ | Fair Value | ​ | ​ | ​
​ |  | Available for Sale |  | Cash flow |  | Defined Benefit |  | Option Elected | ​ | ​ | ​
​ |  | Securities |  | Hedges |  | Pension Items |  | on Liabilities |  | Total
​ |  | (In thousands)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Beginning balance, net of tax | ​ | $ | (63,106) | ​ | $ | 25,380 | ​ | $ | (275) | ​ | $ | 1,513 | ​ | $ | (36,488)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Other comprehensive income (loss) before reclassifications, net of tax |  | (4,216) | ​ |  | 8,799 | ​ |  | — | ​ |  | (155) | ​ |  | 4,428
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Amounts reclassified from accumulated other comprehensive income (loss), net of tax |  | 3,799 | ​ |  | (7,620) | ​ |  | (138) | ​ |  | — | ​ |  | (3,959)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Net current period other comprehensive income (loss), net of tax |  | (417) | ​ |  | 1,179 | ​ |  | (138) | ​ |  | (155) | ​ |  | 469
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Ending balance, net of tax | ​ | $ | (63,523) | ​ | $ | 26,559 | ​ | $ | (413) | ​ | $ | 1,358 | ​ | $ | (36,019)
​ ​
Schedule of amounts reclassified from accumulated other comprehensive income (loss) by component | ​
​ | ​ | ​ | ​ | ​ | ​
For the three months ended June 30, 2024
​ |  | Amounts Reclassified from | ​ | ​
Details about Accumulated Other |  | Accumulated Other | ​ | Affected Line Item in the Statement
Comprehensive Income (Loss) Components |  | Comprehensive Income (Loss) |  | Where Net Income is Presented
​ | ​ | ​ | (In thousands) | ​ | ​
Cash flow hedges: |  | ​ |  | ​ | ​
Interest rate swaps benefit (expense) | ​ | $ | 6,432 | ​ | Interest expense
​ | ​ |  | (1,998) | ​ | Provision for income taxes
​ | ​ | $ | 4,434 | ​ | ​
​ | ​ | ​ | ​ | ​ | ​
Amortization of defined benefit pension items: | ​ |  |  | ​ | ​
Actuarial losses benefit (expense) | ​ | $ | 92 | (1) | Other operating expenses
​ | ​ |  | (29) | ​ | Provision for income taxes
​ | ​ | $ | 63 | ​ | ​
​ ​
​ | ​ | ​ | ​ | ​ | ​
For the three months ended June 30, 2023
​ |  | Amounts Reclassified from | ​ | ​
Details about Accumulated Other |  | Accumulated Other |  | Affected Line Item in the Statement
Comprehensive Income (Loss) Components |  | Comprehensive Income (Loss) | ​ | Where Net Income is Presented
​ | ​ | ​ | (In thousands) | ​ | ​
Cash flow hedges: |  | ​ |  | ​ | ​
Interest rate swaps benefit (expense) | ​ | $ | 6,785 | ​ | Interest expense
​ | ​ |  | (2,113) | ​ | Provision for income taxes
​ | ​ | $ | 4,672 | ​ | ​
​ | ​ | ​ | ​ | ​ | ​
Amortization of defined benefit pension items: | ​ |  |  | ​ | ​
Actuarial losses benefit (expense) | ​ | $ | 100 | (1) | Other operating expenses
​ | ​ |  | (31) | ​ | Provision for income taxes
​ | ​ | $ | 69 | ​ | ​
(1) These accumulated other comprehensive income (loss) components are included in the computation of net periodic pension cost. See Note 9 (“Pension and Other Postretirement Benefit Plans”) of the Notes to the Consolidated Financial Statements for additional information. ​ ​ ​ ​ ​
​ | ​ | ​ | ​ | ​ | ​
For the six months ended June 30, 2024
​ | ​ | Amounts Reclassified from | ​ | ​
Details about Accumulated Other | ​ | Accumulated Other | ​ | Affected Line Item in the Statement
Comprehensive Income Components |  | Comprehensive Income (Loss) |  | Where Net Income (Loss) is Presented
(In thousands)
Cash flow hedges: | ​ |  |  | ​ |
Interest rate swaps benefit (expense) | ​ | $ | 13,294 |  | Interest expense
​ | ​ |  | (4,130) |  | Provision for income taxes
​ | ​ | $ | 9,164 |  | ​
​ | ​ | ​ | ​ | ​ | ​
Amortization of defined benefit pension items: | ​ |  |  | ​ |
Actuarial losses benefit (expense) | ​ | $ | 184 | (1) | Other operating expense
​ | ​ |  | (58) |  | Provision for income taxes
​ | ​ | $ | 126 |  | ​
​
​ | ​ | ​ | ​ | ​ | ​
For the six months ended June 30, 2023
​ | ​ | Amounts Reclassified from | ​ | ​
Details about Accumulated Other | ​ | Accumulated Other | ​ | Affected Line Item in the Statement
Comprehensive Income Components |  | Comprehensive Income (Loss) |  | Where Net Income (Loss) is Presented
(In thousands)
Cash flow hedges: | ​ |  |  |  |
Interest rate swaps benefit (expense) | ​ | $ | 11,040 |  | Interest expense
​ | ​ |  | (3,420) |  | Provision for income taxes
​ | ​ | $ | 7,620 |  | ​
​ | ​ | ​ | ​ | ​ | ​
Amortization of defined benefit pension items: | ​ |  |  | ​ |
Actuarial losses benefit (expense) | ​ | $ | 200 | (1) | Other operating expense
​ | ​ |  | (62) | ​ | Provision for income taxes
​ | ​ | $ | 138 |  | ​
​

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