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Employee Benefits (Details - Weighted average assumptions) | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022
Retirement Benefits [Abstract] |  |
Discount rate | 4.68% | 4.87%
Discount rate | 4.87% | 2.65%
Expected return on plan assets | 7.00% | 7.25%

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- Definition Weighted average rate for present value of future retirement benefits cash flows, used to determine benefit obligation of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (k)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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