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Accumulated Other Comprehensive Income (Loss) | 3 Months Ended
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Mar. 31, 2021
Equity [Abstract] |
Accumulated Other Comprehensive Income (Loss) | ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) The following table summarizes the changes within each classification of AOCI, net of tax:
(dollars in thousands) | Unrealized Gains and Losses on Available- for-Sale Debt Securities |  |  |  | Gains and Losses on Cash Flow Hedges |  | Defined Benefit Pension Plans |  | Total
Three Months Ended March 31, 2021 |  |  |  |  |  |  |  |  |
Balance at beginning of period | $ | 145,335 |  |  |  |  | $ | 2,584 |  |  | $ | (148) |  |  | $ | 147,771 |
Other comprehensive income (loss) before reclassifications | (57,287) |  |  |  |  | 3,053 |  |  | — |  |  | (54,234) |
Amounts reclassified from AOCI to income (1) | (1,553) |  |  |  |  | (112) |  |  | 37 |  |  | (1,628) |
Balance at end of period | $ | 86,495 |  |  |  |  | $ | 5,525 |  |  | $ | (111) |  |  | $ | 91,909 |
Three Months Ended March 31, 2020 |  |  |  |  |  |  |  |  |
Balance at beginning of period | $ | 56,131 |  |  |  |  | $ | 240 |  |  | $ | (164) |  |  | $ | 56,207 |
Other comprehensive income (loss) before reclassifications | 80,369 |  |  |  |  | 5,886 |  |  | — |  |  | 86,255 |
Amounts reclassified from AOCI to income (1) | (4,000) |  |  |  |  | (325) |  |  | 20 |  |  | (4,305) |
Balance at end of period | $ | 132,500 |  |  |  |  | $ | 5,801 |  |  | $ | (144) |  |  | $ | 138,157 |
(1)See table below for details about reclassifications to income. The following table summarizes the significant amounts reclassified out of each component of AOCI for the three months ended March 31, 2021 and 2020:
Details about AOCI Components | Amount Reclassified from AOCI |  | Affected Line Item in the Statement of Income
| Three Months Ended March 31, |  |
(dollars in thousands) | 2021 |  | 2020 |  |
Unrealized gains and losses on available-for-sale debt securities | $ | 1,993 |  |  | $ | 5,174 |  |  | Debt securities gains (losses), net
| (440) |  |  | (1,174) |  |  | Income tax (expense) benefit
| $ | 1,553 |  |  | $ | 4,000 |  |  | Net income
Gains and losses on cash flow hedges Interest rate contracts | $ | 149 |  |  | $ | 431 |  |  | Interest income (expense)
| (37) |  |  | (106) |  |  | Income tax (expense) benefit
| $ | 112 |  |  | $ | 325 |  |  | Net income
Amortization of defined benefit pension items |  |  |  |  |
Actuarial gains (losses) | $ | (49) |  |  | $ | (27) |  |  | Salaries and employee benefits
| 12 |  |  | 7 |  |  | Income tax (expense) benefit
| $ | (37) |  |  | $ | (20) |  |  | Net income
Total reclassifications for the period | $ | 1,628 |  |  | $ | 4,305 |  |  | Net income

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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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