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Comprehensive Income/(Loss) | 3 Months Ended
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Mar. 31, 2021
Equity [Abstract] |
Comprehensive Income/(Loss) | NOTE 9. COMPREHENSIVE INCOME/(LOSS) The activity in accumulated other comprehensive income for the three months ended March 31, 2021 and 2020 is as follows:
|  | Accumulated Other Comprehensive Income/(Loss) (1) |
(unaudited, in thousands) |  | Defined Benefit Plans |  |  | Unrealized Gains (Losses) on Debt Securities Available-for-Sale |  |  | Unrealized Gains on Debt Securities Transferred from Available-for-Sale to Held-to-Maturity |  |  | Total |
Balance at December 31, 2020 |  | $ | (15,502 | ) |  | $ | 46,861 |  |  | $ | — |  |  | $ | 31,359 |
Other comprehensive income/(loss) before reclassifications |  |  | — |  |  |  | (22,026 | ) |  |  | — |  |  |  | (22,026 | )
Amounts reclassified from accumulated other comprehensive income/(loss) |  |  | 472 |  |  |  | (2 | ) |  |  | — |  |  |  | 470 |
Period change |  |  | 472 |  |  |  | (22,028 | ) |  |  | — |  |  |  | (21,556 | )
Balance at March 31, 2021 |  | $ | (15,030 | ) |  | $ | 24,833 |  |  | $ | — |  |  | $ | 9,803 |
Balance at December 31, 2019 |  | $ | (17,468 | ) |  | $ | 18,644 |  |  | $ | 25 |  |  | $ | 1,201 |
Other comprehensive income/(loss) before reclassifications |  | — |  |  |  | 41,116 |  |  | — |  |  |  | 41,116 |
Amounts reclassified from accumulated other comprehensive income/(loss) |  |  | 569 |  |  |  | (1,743 | ) |  |  | (2 | ) |  |  | (1,176 | )
Period change |  |  | 569 |  |  |  | 39,373 |  |  |  | (2 | ) |  |  | 39,940 |
Balance at March 31, 2020 |  | $ | (16,899 | ) |  | $ | 58,017 |  |  | $ | 23 |  |  | $ | 41,141 |
(1) | All amounts are net of tax. Related income tax expense or benefit is calculated using a combined Federal and State income tax rate approximating 24% in both periods presented.
The following table provides details about amounts reclassified from accumulated other comprehensive income for the three months ended March 31, 2021 and 2020:
Details about Accumulated Other Comprehensive Income/(Loss) Components |  | For the Three Months Ended March 31, |  |  | Affected Line Item in the Statement of Comprehensive Income
(unaudited, in thousands) |  | 2021 |  |  | 2020 |  |  |
Debt securities available-for-sale (1): |  |  |  |  |  |  |  |  |  |
Net securities gains reclassified into earnings |  | $ | (3 | ) |  | $ | (2,287 | ) |  | Net securities gains (Non-interest income)
Related income tax expense ⁽²⁾ |  |  | 1 |  |  |  | 544 |  |  | Provision for income taxes
Net effect on accumulated other comprehensive income for the period |  |  | (2 | ) |  |  | (1,743 | ) |  |
Debt securities held-to-maturity (1): |  |  |  |  |  |  |  |  |  |
Amortization of unrealized gain transferred from available-for-sale |  |  | — |  |  |  | (3 | ) |  | Interest and dividends on securities (Interest and dividend income)
Related income tax expense ⁽²⁾ |  |  | — |  |  |  | 1 |  |  | Provision for income taxes
Net effect on accumulated other comprehensive income for the period |  |  | — |  |  |  | (2 | ) |  |
Defined benefit plans (3): |  |  |  |  |  |  |  |  |  |
Amortization of net loss and prior service costs |  |  | 622 |  |  |  | 746 |  |  | Employee benefits (Non-interest expense)
Related income tax benefit ⁽²⁾ |  |  | (150 | ) |  |  | (177 | ) |  | Provision for income taxes
Net effect on accumulated other comprehensive income for the period |  |  | 472 |  |  |  | 569 |  |  |
Total reclassifications for the period |  | $ | 470 |  |  | $ | (1,176 | ) |  |
(1) | For additional detail related to unrealized gains on securities and related amounts reclassified from accumulated other comprehensive income, see Note 3, “Securities.”
(2) | Income tax expense or benefit is calculated using a combined Federal and State income tax rate approximating 24% in both periods presented.
(3) | Included in the computation of net periodic pension cost. See Note 6, “Benefit Plans” for additional detail.

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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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