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ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Tables) | 12 Months Ended
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Dec. 31, 2021
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] |
Schedule of components of other comprehensive income (loss) | The following table presents the components of other comprehensive income (loss) for the years ended December 31, 2021, 2020 and 2019, by component:
(Dollars in thousands) | Before Tax |  | Tax Effect |  | Net of Tax
Year ended December 31, 2021 |  |  |  |  |
Net unrealized losses on investment securities: |  |  |  |  |
Net unrealized losses arising during the period | $ | (41,237) |  |  | $ | (11,030) |  |  | $ | (30,207) |
Add: Reclassification adjustment for gains realized in net income | (150) |  |  | (40) |  |  | (110) |
Net unrealized losses on investment securities | (41,387) |  |  | (11,070) |  |  | (30,317) |
Defined benefit plans: |  |  |  |  |
Net actuarial gains arising during the period | 2,014 |  |  | 544 |  |  | 1,470 |
Amortization of net actuarial losses | 1,036 |  |  | 291 |  |  | 745 |
Amortization of net transition obligation | 18 |  |  | 4 |  |  | 14 |
Amortization of prior service cost | — |  |  | — |  |  | — |
Defined benefit plans, net | 3,068 |  |  | 839 |  |  | 2,229 |
Other comprehensive loss | $ | (38,319) |  |  | $ | (10,231) |  |  | $ | (28,088) |
(Dollars in thousands) | Before Tax |  | Tax Effect |  | Net of Tax
Year ended December 31, 2020 |  |  |  |  |
Net unrealized gains on investment securities: |  |  |  |  |
Net unrealized gains arising during the period | $ | 15,939 |  |  | $ | 4,260 |  |  | $ | 11,679 |
Less: Reclassification adjustment for losses realized in net income | 201 |  |  | 54 |  |  | 147 |
Net unrealized gains on investment securities | 16,140 |  |  | 4,314 |  |  | 11,826 |
Defined benefit plans: |  |  |  |  |
Net actuarial losses arising during the period | (1,488) |  |  | (508) |  |  | (980) |
Amortization of net actuarial losses | 1,160 |  |  | 310 |  |  | 850 |
Amortization of net transition obligation | 18 |  |  | 5 |  |  | 13 |
Amortization of prior service cost | 14 |  |  | 4 |  |  | 10 |
Defined benefit plans, net | (296) |  |  | (189) |  |  | (107) |
Other comprehensive income | $ | 15,844 |  |  | $ | 4,125 |  |  | $ | 11,719 |
(Dollars in thousands) | Before Tax |  | Tax Effect |  | Net of Tax
Year ended December 31, 2019 |  |  |  |  |
Net unrealized gains on investment securities: |  |  |  |  |
Net unrealized gains arising during the period | $ | 37,696 |  |  | $ | 10,102 |  |  | $ | 27,594 |
Add: Reclassification adjustment for losses realized in net income | (36) |  |  | (10) |  |  | (26) |
Net unrealized gains on investment securities | 37,660 |  |  | 10,092 |  |  | 27,568 |
Defined benefit plans: |  |  |  |  |
Net actuarial losses arising during the period | (1,106) |  |  | (296) |  |  | (810) |
Amortization of net actuarial losses | 1,117 |  |  | 299 |  |  | 818 |
Amortization of net transition obligation | 18 |  |  | 5 |  |  | 13 |
Amortization of prior service cost | 18 |  |  | 5 |  |  | 13 |
Defined benefit plans, net | 47 |  |  | 13 |  |  | 34 |
Other comprehensive income | $ | 37,707 |  |  | $ | 10,105 |  |  | $ | 27,602 |
Schedule of changes in each component of AOCI, net of tax | The following table presents the changes in each component of AOCI, net of tax, for the years ended December 31, 2021, 2020 and 2019:
(Dollars in thousands) | Investment Securities |  |  |  | Defined Benefit Plans |  | AOCI
Year ended December 31, 2021 |  |  |  |  |  |  |
Balance at beginning of period | $ | 26,651 |  |  |  |  | $ | (6,523) |  |  | $ | 20,128 |
Other comprehensive income (loss) before reclassifications | (30,207) |  |  |  |  | 1,470 |  |  | (28,737) |
Amounts reclassified from AOCI | (110) |  |  |  |  | 759 |  |  | 649 |
Net other comprehensive income (loss) | (30,317) |  |  |  |  | 2,229 |  |  | (28,088) |
Balance at end of period | $ | (3,666) |  |  |  |  | $ | (4,294) |  |  | $ | (7,960) |
(Dollars in thousands) | Investment Securities |  |  |  | Defined Benefit Plans |  | AOCI
Year ended December 31, 2020 |  |  |  |  |  |  |
Balance at beginning of period | $ | 14,825 |  |  |  |  | $ | (6,416) |  |  | $ | 8,409 |
Other comprehensive income (loss) before reclassifications | 11,679 |  |  |  |  | (980) |  |  | 10,699 |
Amounts reclassified from AOCI | 147 |  |  |  |  | 873 |  |  | 1,020 |
Net other comprehensive income (loss) | 11,826 |  |  |  |  | (107) |  |  | 11,719 |
Balance at end of period | $ | 26,651 |  |  |  |  | $ | (6,523) |  |  | $ | 20,128 |
(Dollars in thousands) | Investment Securities |  |  |  | Defined Benefit Plans |  | AOCI
Year ended December 31, 2019 |  |  |  |  |  |  |
Balance at beginning of period | $ | (9,643) |  |  |  |  | $ | (6,450) |  |  | $ | (16,093) |
Impact of adoption of new accounting standards | (3,100) |  |  |  |  | — |  |  | (3,100) |
Adjusted balance at beginning of period | (12,743) |  |  |  |  | (6,450) |  |  | (19,193) |
Other comprehensive income (loss) before reclassifications | 27,594 |  |  |  |  | (810) |  |  | 26,784 |
Amounts reclassified from AOCI | (26) |  |  |  |  | 844 |  |  | 818 |
Total other comprehensive income (loss) | 27,568 |  |  |  |  | 34 |  |  | 27,602 |
Balance at end of period | $ | 14,825 |  |  |  |  | $ | (6,416) |  |  | $ | 8,409 |
Schedule of amounts reclassified out of each component of AOCI | The following table presents the amounts reclassified out of each component of AOCI for the years ended December 31, 2021, 2020 and 2019:
| Amount Reclassified from AOCI |  | Affected Line Item in the
| Year ended December 31, |  | Statement Where Net
Details about AOCI Components | 2021 |  | 2020 |  | 2019 |  | Income is Presented
| (Dollars in thousands) |  |
Sale of available-for-sale investment securities: |  |  |  |  |  |  |
Realized gains (losses) on available-for-sale investment securities | $ | 150 |  |  | $ | (201) |  |  | $ | 36 |  |  | Net gains (losses) on sales of investment securities
Tax effect | (40) |  |  | 54 |  |  | (10) |  |  | Income tax benefit (expense)
Net of tax | $ | 110 |  |  | $ | (147) |  |  | $ | 26 |  |  |
Defined benefit plan items: |  |  |  |  |  |  |
Amortization of net actuarial losses | $ | (1,036) |  |  | $ | (1,160) |  |  | $ | (1,117) |  |  | Salaries and employee benefits (1)
Amortization of net transition obligation | (18) |  |  | (18) |  |  | (18) |  |  | Salaries and employee benefits (1)
Amortization of prior service cost | — |  |  | (14) |  |  | (18) |  |  | Salaries and employee benefits (1)
Total before tax | (1,054) |  |  | (1,192) |  |  | (1,153) |  |  |
Tax effect | 295 |  |  | 319 |  |  | 309 |  |  | Income tax expense
Net of tax | $ | (759) |  |  | $ | (873) |  |  | $ | (844) |  |  |
Total reclassifications, net of tax | $ | (649) |  |  | $ | (1,020) |  |  | $ | (818) |  |  |

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