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RETIREMENT PLANS (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Defined Benefit Plan Disclosure |  |  |
Employer contributions | $ 249 | $ 456 |
Employee Stock Ownership Plan (ESOP), Cash Contributions to ESOP | 1,520 | 1,450 | $ 1,400
Cash contributions to ESOP for employees no longer participating in plan | 1,300 | 1,100 | 1,100
Pension plans with accumulated benefit obligations in excess of plan assets, aggregate accumulated benefit obligation | 81,800 | 81,500 |
Pension and other postretirement defined benefit plans, liabilities | 7,800 | 7,500 |
Accumulated other comprehensive loss | (127,087) | (139,974) | (2,426)
First Financial Corporation Common Stock |  |  |
Defined Benefit Plan Disclosure |  |  |
Defined benefit plan assets equity securities | $ 16,300 | $ 17,200 |
Percentage of plan assets (percent) | 22.00% | 24.00% |
Pension Plan |  |  |
Defined Benefit Plan Disclosure |  |  |
Employer contributions | $ 126 | $ 2,050 | 2,050
Expected contributions to pension plan in 2014 | 3,900 |  |
Employee Stock Ownership Plan |  |  |
Defined Benefit Plan Disclosure |  |  |
Employee Stock Ownership Plan (ESOP), Cash Contributions to ESOP | 604 |  |
Employee Stock Ownership Plan | First Financial Corporation Common Stock |  |  |
Defined Benefit Plan Disclosure |  |  |
Defined benefit plan assets equity securities | 8,300 | 7,800 |
Supplemental Employee Retirement Plans, Defined Benefit |  |  |
Defined Benefit Plan Disclosure |  |  |
Pension expense | 517 | 751 | $ 748
Accumulated other comprehensive income (loss), after tax | 926 | 1,200 |
Accumulated other comprehensive loss | 459 | 546 |
Postretirement Health Coverage |  |  |
Defined Benefit Plan Disclosure |  |  |
Expected contributions to pension plan in 2014 | 249 |  |
Pension expense | $ 277 | $ 300 |

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- Definition Assets, equity stocks, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets. + References No definition available. + Details
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