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ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) | 3 Months Ended
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Mar. 31, 2025
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) |
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) | 3. ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) Activity in accumulated other comprehensive income (loss), net of tax, was as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | Total
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Accumulated
​ | ​ | ​ | ​ | Defined | ​ | ​ | ​ | ​ | Other
​ | ​ | ​ | ​ | Benefit | ​ | ​ | ​ | ​ | Comprehensive
(In thousands) |  | Securities |  | Plans |  | Derivatives |  | Income (Loss)
Balance as of January 1, 2025 | ​ | $ | (43,767) | ​ | $ | (7,499) | ​ | $ | 6,248 | ​ | $ | (45,018)
Other comprehensive income (loss) before reclassifications | ​ |  | 6,136 | ​ |  | 3,364 | ​ |  | (5,244) | ​ |  | 4,256
Amounts reclassified from accumulated other comprehensive income (loss) | ​ |  | 502 | ​ |  | (60) | ​ |  | 1,275 | ​ |  | 1,717
Net other comprehensive income (loss) during the period | ​ |  | 6,638 | ​ |  | 3,304 | ​ |  | (3,969) | ​ |  | 5,973
Balance as of March 31, 2025 | ​ | $ | (37,129) | ​ | $ | (4,195) | ​ | $ | 2,279 | ​ | $ | (39,045)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Balance as of January 1, 2024 | ​ | $ | (90,242) | ​ | $ | (6,430) | ​ | $ | 5,093 | ​ | $ | (91,579)
Other comprehensive income before reclassifications | ​ |  | 2,360 | ​ |  | 361 | ​ |  | 1,457 | ​ |  | 4,178
Amounts reclassified from accumulated other comprehensive income (loss) | ​ |  | 490 | ​ |  | (216) | ​ |  | 1,661 | ​ |  | 1,935
Net other comprehensive income during the period | ​ |  | 2,850 | ​ |  | 145 | ​ |  | 3,118 | ​ |  | 6,113
Balance as of March 31, 2024 | ​ | $ | (87,392) | ​ | $ | (6,285) | ​ | $ | 8,211 | ​ | $ | (85,466)
​ The before and after tax amounts allocated to each component of other comprehensive income (loss) are presented in the table below for the periods indicated. ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended
​ | ​ | March 31,
(In thousands) | ​ | 2025 |  | 2024
Change in unrealized gain (loss) on securities: | ​ |  |  | ​ |  |
Change in net unrealized gain during the period | ​ | $ | 7,960 | ​ | $ | 3,344
Reclassification adjustment for net losses included in net loss on sale of securities and other assets | ​ |  | — | ​ |  | —
Accretion of net unrealized loss on securities transferred to held-to-maturity | ​ | ​ | 724 | ​ | ​ | 718
Credit loss expense | ​ | ​ | 893 | ​ | ​ | —
Net change | ​ |  | 9,577 | ​ |  | 4,062
Tax expense | ​ |  | 2,939 | ​ |  | 1,212
Net change in unrealized gain on securities, net of reclassification adjustments and tax | ​ |  | 6,638 | ​ |  | 2,850
Change in pension and other postretirement obligations: | ​ |  |  | ​ |  |
Reclassification adjustment for expense included in other expense | ​ |  | (87) | ​ |  | (317)
Change in the net actuarial gain | ​ |  | 4,854 | ​ |  | 520
Net change | ​ |  | 4,767 | ​ |  | 203
Tax expense | ​ |  | 1,463 | ​ |  | 58
Net change in pension and other postretirement obligations | ​ |  | 3,304 | ​ |  | 145
Change in unrealized gain (loss) on derivatives: | ​ |  |  | ​ |  |
Change in net unrealized (loss) gain during the period | ​ |  | (7,567) | ​ |  | 2,145
Reclassification adjustment for expense included in interest expense | ​ |  | 1,840 | ​ |  | 2,435
Net change | ​ |  | (5,727) | ​ |  | 4,580
Tax (benefit) expense | ​ |  | (1,758) | ​ |  | 1,462
Net change in unrealized gain (loss) on derivatives, net of reclassification adjustments and tax | ​ |  | (3,969) | ​ |  | 3,118
Other comprehensive income, net of tax | ​ | $ | 5,973 | ​ | $ | 6,113
​

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- Definition The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(19)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477250/944-220-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(21)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(23)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478524/942-220-S99-1 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/220/tableOfContent + Details
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