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ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) | 6 Months Ended
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Jun. 30, 2021
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) |
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) | 4.ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) Activity in accumulated other comprehensive income (loss), net of tax, was as follows:
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | Total
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Accumulated
​ | ​ | Securities | ​ | Defined | ​ | ​ | ​ | ​ | Other
​ | ​ | Available- | ​ | Benefit | ​ | ​ | ​ | ​ | Comprehensive
(In thousands) |  | for-Sale |  | Plans |  | Derivatives |  | Income (Loss)
Balance as of January 1, 2021 | ​ | $ | 12,694 | ​ | $ | (6,086) | ​ | $ | (12,532) | ​ | $ | (5,924)
Other comprehensive (loss) income before reclassifications | ​ |  | (4,451) | ​ |  | 2,061 | ​ |  | 13,700 | ​ |  | 11,310
Amounts reclassified from accumulated other comprehensive loss | ​ |  | (812) | ​ |  | (579) | ​ |  | 581 | ​ |  | (810)
Net other comprehensive (loss) income during the period | ​ |  | (5,263) | ​ |  | 1,482 | ​ |  | 14,281 | ​ |  | 10,500
Balance as of June 30, 2021 | ​ | $ | 7,431 | ​ | $ | (4,604) | ​ | $ | 1,749 | ​ | $ | 4,576
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Balance as of January 1, 2020 | ​ | $ | 4,621 | ​ | $ | (6,024) | ​ | $ | (4,537) | ​ | $ | (5,940)
Other comprehensive income (loss) before reclassifications | ​ |  | 9,609 | ​ |  | 241 | ​ |  | (17,218) | ​ |  | (7,368)
Amounts reclassified from accumulated other comprehensive loss | ​ |  | (2,154) | ​ |  | 130 | ​ |  | 929 | ​ |  | (1,095)
Net other comprehensive income (loss) during the period | ​ |  | 7,455 | ​ |  | 371 | ​ |  | (16,289) | ​ |  | (8,463)
Balance as of June 30, 2020 | ​ | $ | 12,076 | ​ | $ | (5,653) | ​ | $ | (20,826) | ​ | $ | (14,403)
​ 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 | ​ | Six Months Ended
​ | ​ | June 30, | ​ | June 30,
(In thousands) |  | 2021 |  | 2020 | ​ | 2021 |  | 2020
Change in unrealized holding gain or loss on securities available-for-sale: | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
Change in net unrealized gain or loss during the period | ​ | $ | 8,966 | ​ | $ | 3,793 | ​ | $ | (6,568) | ​ | $ | 14,053
Reclassification adjustment for net gains included in net gain on securities and other assets | ​ |  | (20) | ​ |  | (3,134) | ​ |  | (1,207) | ​ |  | (3,142)
Net change | ​ |  | 8,946 | ​ |  | 659 | ​ |  | (7,775) | ​ |  | 10,911
Tax expense (benefit) | ​ |  | 2,817 | ​ |  | 248 | ​ |  | (2,512) | ​ |  | 3,456
Net change in unrealized holding gain or loss on securities available-for-sale, net of reclassification adjustments and tax | ​ |  | 6,129 | ​ |  | 411 | ​ |  | (5,263) | ​ |  | 7,455
Change in pension and other postretirement obligations: | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
Reclassification adjustment for expense included in other expense | ​ |  | (438) | ​ |  | 95 | ​ |  | (860) | ​ |  | 190
Reclassification adjustment for curtailment loss | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 1,543 | ​ | ​ | —
Change in the net actuarial gain or loss | ​ |  | 644 | ​ |  | 176 | ​ |  | 1,529 | ​ |  | 352
Net change | ​ |  | 206 | ​ | ​ | 271 | ​ |  | 2,212 | ​ |  | 542
Tax expense | ​ |  | 95 | ​ |  | 85 | ​ |  | 730 | ​ |  | 171
Net change in pension and other postretirement obligations | ​ |  | 111 | ​ |  | 186 | ​ |  | 1,482 | ​ |  | 371
Change in unrealized gain or loss on derivatives: | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
Change in net unrealized gain or loss during the period | ​ |  | (1,406) | ​ |  | (4,617) | ​ |  | 3,542 | ​ |  | (25,198)
Reclassification adjustment for loss included in loss on termination of derivatives | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 16,505 | ​ | ​ | —
Reclassification adjustment for expense included in interest expense | ​ |  | 10 | ​ |  | 1,156 | ​ |  | 864 | ​ |  | 1,360
Net change | ​ |  | (1,396) | ​ |  | (3,461) | ​ |  | 20,911 | ​ |  | (23,838)
Tax expense (benefit) | ​ |  | 799 | ​ |  | (1,093) | ​ |  | 6,630 | ​ |  | (7,549)
Net change in unrealized gain or loss on derivatives, net of reclassification adjustments and tax | ​ |  | (2,195) | ​ |  | (2,368) | ​ |  | 14,281 | ​ |  | (16,289)
Other comprehensive income (loss), net of tax | ​ | $ | 4,045 | ​ | $ | (1,771) | ​ | $ | 10,500 | ​ | $ | (8,463)
​

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -URI http://asc.fasb.org/topic&trid=2134417 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(21)) -URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(23)) -URI http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(19)) -URI http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263 + Details
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