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Accumulated Other Comprehensive Income (Loss) (Tables) | 9 Months Ended
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Sep. 30, 2021
Equity [Abstract] |
Schedule of AOCI | 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 September 30, 2021 |  |  |  |  |  |  |  |  |
Balance at beginning of period | $ | 59,095 |  |  |  |  | $ | 3,241 |  |  | $ | (74) |  |  | $ | 62,262 |
Other comprehensive income (loss) before reclassifications | (3,230) |  |  |  |  | (124) |  |  | — |  |  | (3,354) |
Amounts reclassified from AOCI to income (1) | (945) |  |  |  |  | (1,190) |  |  | 37 |  |  | (2,098) |
Balance at end of period | $ | 54,920 |  |  |  |  | $ | 1,927 |  |  | $ | (37) |  |  | $ | 56,810 |
Three Months Ended September 30, 2020 |  |  |  |  |  |  |  |  |
Balance at beginning of period | $ | 144,811 |  |  |  |  | $ | 4,355 |  |  | $ | (123) |  |  | $ | 149,043 |
Other comprehensive income (loss) before reclassifications | 5,234 |  |  |  |  | (8) |  |  | — |  |  | 5,226 |
Amounts reclassified from AOCI to income (1) | (3,837) |  |  |  |  | (1,169) |  |  | 21 |  |  | (4,985) |
Balance at end of period | $ | 146,208 |  |  |  |  | $ | 3,178 |  |  | $ | (102) |  |  | $ | 149,284 |
Nine Months Ended September 30, 2021 |  |  |  |  |  |  |  |  |
Balance at beginning of period | $ | 145,335 |  |  |  |  | $ | 2,584 |  |  | $ | (148) |  |  | $ | 147,771 |
Other comprehensive income (loss) before reclassifications | (87,403) |  |  |  |  | 1,970 |  |  | — |  |  | (85,433) |
Amounts reclassified from AOCI to income (1) | (3,012) |  |  |  |  | (2,627) |  |  | 111 |  |  | (5,528) |
Balance at end of period | $ | 54,920 |  |  |  |  | $ | 1,927 |  |  | $ | (37) |  |  | $ | 56,810 |
Nine Months Ended September 30, 2020 |  |  |  |  |  |  |  |  |
Balance at beginning of period | $ | 56,131 |  |  |  |  | $ | 240 |  |  | $ | (164) |  |  | $ | 56,207 |
Other comprehensive income (loss) before reclassifications | 98,336 |  |  |  |  | 5,692 |  |  | — |  |  | 104,028 |
Amounts reclassified from AOCI to income (1) | (8,259) |  |  |  |  | (2,754) |  |  | 62 |  |  | (10,951) |
Balance at end of period | $ | 146,208 |  |  |  |  | $ | 3,178 |  |  | $ | (102) |  |  | $ | 149,284 |
(1)See tables below for details about reclassifications to income.
Reclassifications out of AOCI | The following table summarizes the significant amounts reclassified out of each component of AOCI for the three months ended September 30, 2021 and 2020:
| Three Months Ended September 30, |  |
(dollars in thousands) | 2021 |  | 2020 |  |
Details about AOCI Components | Amount Reclassified from AOCI |  | Affected Line Item in the Statement of Income
Unrealized gains and losses on available-for-sale debt securities | $ | 1,207 |  |  | $ | 4,921 |  |  | Debt securities gains (losses), net
| (262) |  |  | (1,084) |  |  | Income tax (expense) benefit
| $ | 945 |  |  | $ | 3,837 |  |  | Net income
Gains and losses on cash flow hedges Interest rate contracts | $ | 1,578 |  |  | $ | 1,550 |  |  | Interest income (expense)
| (388) |  |  | (381) |  |  | Income tax (expense) benefit
| $ | 1,190 |  |  | $ | 1,169 |  |  | Net income
Amortization of defined benefit pension items |  |  |  |  |
Actuarial gains (losses) | $ | (49) |  |  | $ | (28) |  |  | Salaries and employee benefits
| 12 |  |  | 7 |  |  | Income tax (expense) benefit
| $ | (37) |  |  | $ | (21) |  |  | Net income
Total reclassifications for the period | $ | 2,098 |  |  | $ | 4,985 |  |  | Net income
The following table summarizes the significant amounts reclassified out of each component of AOCI for the nine months ended September 30, 2021 and 2020:
| Nine Months Ended September 30, |  |
(dollars in thousands) | 2021 |  | 2020 |  |
Details about AOCI Components | Amount Reclassified from AOCI |  | Affected Line Item in the Statement of Income
Unrealized gains and losses on available-for-sale debt securities | $ | 3,892 |  |  | $ | 10,606 |  |  | Debt securities gains (losses), net
| (880) |  |  | (2,347) |  |  | Income tax (expense) benefit
| $ | 3,012 |  |  | $ | 8,259 |  |  | Net income
Gains and losses on cash flow hedges Interest rate contracts | $ | 3,483 |  |  | $ | 3,651 |  |  | Interest income (expense)
| (856) |  |  | (897) |  |  | Income tax (expense) benefit
| $ | 2,627 |  |  | $ | 2,754 |  |  | Net income
Amortization of defined benefit pension items |  |  |  |  |
Actuarial gains (losses) | $ | (147) |  |  | $ | (82) |  |  | Salaries and employee benefits
| 36 |  |  | 20 |  |  | Income tax (expense) benefit
| $ | (111) |  |  | $ | (62) |  |  | Net income
Total reclassifications for the period | $ | 5,528 |  |  | $ | 10,951 |  |  | Net income

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