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Post-Retirement Benefits (Tables) | 12 Months Ended
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Dec. 31, 2023
SCBT Post-retirement Benefit Plan |
Post-Retirement Benefits |
Schedule of the plan's funded status and amounts recognized in the Company's accompanying consolidated balance sheets | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, |
(Dollars in thousands) | ​ | 2023 | ​ | 2022 | ​ | 2021 |
Change in benefit obligation: |  | ​ |  |  | ​ |  |  | ​ |  | ​
Benefit obligation at beginning of year | ​ | $ | 157 | ​ | $ | 195 | ​ | $ | 209 | ​
Interest cost | ​ |  | 7 | ​ |  | 4 | ​ |  | 3 | ​
Actuarial (gain) loss | ​ |  | (14) | ​ |  | (14) | ​ |  | 11 | ​
Benefits paid | ​ |  | (25) | ​ |  | (28) | ​ |  | (28) | ​
Benefit obligation at end of year | ​ |  | 125 | ​ |  | 157 | ​ |  | 195 | ​
Change in plan assets: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Fair value of plan assets at beginning of year | ​ |  | — | ​ |  | — | ​ |  | — | ​
Employer contribution | ​ |  | 25 | ​ |  | 28 | ​ |  | 28 | ​
Benefits paid | ​ |  | (25) | ​ |  | (28) | ​ |  | (28) | ​
Fair value of plan assets at end of year | ​ |  | — | ​ |  | — | ​ |  | — | ​
Funded status | ​ | $ | (125) | ​ | $ | (157) | ​ | $ | (195) | ​
Schedule of weighted average assumptions used to determine benefit obligations and net periodic benefit cost | ​
​ ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year Ended December 31, |
​ | ​ | 2023 | ​ | 2022 | ​ | 2021 |
Weighted-average assumptions used to determine benefit obligation at December 31: |  |  |  |  |  |  | ​
Discount rate |  | 4.60 | % | 4.80 | % | 2.10 | %
Weighted-average assumptions used to determine net periodic benefit cost for years ended December 31: | ​ | ​ | ​ | ​ | ​ | ​ | ​
Discount rate |  | 4.80 | % | 2.10 | % | 1.60 | %
Assumed health care cost trend rates at December 31: | ​ | ​ | ​ | ​ | ​ | ​ | ​
Health care cost trend rate assumed for next year |  | 5.00 | % | 5.00 | % | 5.00 | %
Schedule of components of net periodic benefit cost and other amounts recognized in other comprehensive (loss) income | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year Ended December 31, |
(Dollars in thousands) | ​ | 2023 | ​ | 2022 | ​ | 2021 |
Interest cost |  | $ | 7 |  | $ | 4 |  | $ | 3 | ​
Recognized net actuarial loss | ​ |  | — | ​ |  | 1 | ​ |  | — | ​
Net periodic benefit cost | ​ |  | 7 | ​ |  | 5 | ​ |  | 3 | ​
Net (gain) loss | ​ |  | (14) | ​ |  | (14) | ​ |  | 11 | ​
Amortization of loss | ​ |  | — | ​ |  | (1) | ​ |  | — | ​
Total amount recognized in other comprehensive income | ​ |  | (14) | ​ |  | (15) | ​ |  | 11 | ​
Total recognized in net periodic benefit cost and other comprehensive income | ​ | $ | (7) | ​ | $ | (10) | ​ | $ | 14 | ​
Schedule of estimated future benefit payments (including expected future service as appropriate) | ​
​ | ​ | ​ | ​ | ​
(Dollars in thousands) |  |  | ​ |
2024 | ​ | $ | 22 | ​
2025 | ​ |  | 20 | ​
2026 | ​ |  | 18 | ​
2027 | ​ |  | 16 | ​
2028 | ​ |  | 14 | ​
2029-2033 | ​ |  | 45 | ​
​ | ​ | $ | 135 | ​
FFCH Post-retirement Benefit Plan |
Post-Retirement Benefits |
Schedule of the plan's funded status and amounts recognized in the Company's accompanying consolidated balance sheets | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, | ​
(Dollars in thousands) |  | 2023 |  | 2022 |  | 2021 | ​
Change in benefit obligation: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Benefit obligation at beginning of year | ​ | $ | 2,508 | ​ | $ | 1,754 | ​ | $ | 2,070 | ​
Interest cost | ​ | ​ | 112 | ​ |  | 35 | ​ |  | 31 | ​
Actuarial loss (gain) | ​ | ​ | (1,428) | ​ |  | 1,124 | ​ |  | (110) | ​
Benefits paid | ​ | ​ | (179) | ​ |  | (416) | ​ |  | (246) | ​
Less: Federal subsidy on benefits paid | ​ | ​ | 4 | ​ |  | 11 | ​ |  | 9 | ​
Benefit obligation at end of year | ​ | ​ | 1,017 | ​ |  | 2,508 | ​ |  | 1,754 | ​
Change in plan assets: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Fair value of plan assets at beginning of year | ​ | ​ | — | ​ |  | — | ​ |  | — | ​
Employer contribution | ​ | ​ | 175 | ​ |  | 405 | ​ |  | 236 | ​
Participants’ contributions | ​ | ​ | 4 | ​ |  | 11 | ​ |  | 10 | ​
Benefits paid | ​ | ​ | (179) | ​ |  | (416) | ​ |  | (246) | ​
Fair value of plan assets at end of year | ​ | ​ | — | ​ |  | — | ​ |  | — | ​
Funded status | ​ | $ | (1,017) | ​ | $ | (2,508) | ​ | $ | (1,754) | ​
Schedule of weighted average assumptions used to determine benefit obligations and net periodic benefit cost | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year Ended December 31, |
​ |  | 2023 |  | 2022 | ​ | 2021 | ​
Weighted-average assumptions used to determine benefit obligation at December 31: | ​ | ​ | ​ | ​ | ​ | ​ | ​
Discount rate | ​ | 4.60 | % | 4.80 | % | 2.10 | %
Weighted-average assumptions used to determine net periodic benefit cost for years ended December 31: | ​ | ​ | ​ | ​ | ​ | ​ | ​
Discount rate | ​ | 4.80 | % | 2.10 | % | 1.60 | %
Assumed health care cost trend rates at December 31: | ​ | ​ | ​ | ​ | ​ | ​ | ​
Health care cost trend rate assumed for next year | ​ | 5.00 | % | 5.00 | % | 5.00 | %
Schedule of components of net periodic benefit cost and other amounts recognized in other comprehensive (loss) income | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year Ended December 31, |
(Dollars in thousands) |  | 2023 |  | 2022 |  | 2021 |
Interest cost | ​ | $ | 112 | ​ | $ | 35 | ​ | $ | 31 | ​
Recognized net actuarial loss | ​ | ​ | 285 | ​ |  | 141 | ​ |  | 174 | ​
Net periodic benefit cost | ​ | ​ | 397 | ​ |  | 176 | ​ |  | 205 | ​
Net (gain) loss | ​ | ​ | (1,428) | ​ |  | 1,124 | ​ |  | (110) | ​
Amortization of loss | ​ | ​ | (285) | ​ |  | (141) | ​ |  | (174) | ​
Total amount recognized in other comprehensive income | ​ | ​ | (1,713) | ​ |  | 983 | ​ |  | (284) | ​
Total recognized in net periodic benefit cost and other comprehensive income | ​ | $ | (1,316) | ​ | $ | 1,159 | ​ | $ | (79) | ​
Schedule of estimated future benefit payments (including expected future service as appropriate) | ​
​ | ​ | ​ | ​ | ​
(Dollars in thousands) |  |  | ​ |
2024 | ​ | $ | 149 | ​
2025 | ​ |  | 140 | ​
2026 | ​ |  | 129 | ​
2027 | ​ |  | 119 | ​
2028 | ​ |  | 108 | ​
2029-2033 | ​ |  | 386 | ​
​ | ​ | $ | 1,031 | ​

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- Definition Tabular disclosure of amount recognized in net periodic benefit cost and other comprehensive income (loss) for the period for pension plans and/or other employee benefit plans. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Tabular disclosure of assumption used to determine benefit obligation and net periodic benefit cost of defined benefit plan. Includes, but is not limited to, discount rate, rate of compensation increase, expected long-term rate of return on plan assets and interest crediting rate. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (k) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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- Definition Tabular disclosure of benefits expected to be paid by pension plans and/or other employee benefit plans in each of the next five fiscal years and in the aggregate for the five fiscal years thereafter. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 715 -SubTopic 20 -Subparagraph (f) -Name Accounting Standards Codification -Paragraph 1 -Section 50 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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