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EMPLOYEE BENEFIT PLANS - Weighted-average assumptions used to determine benefit obligations (Details) | Dec. 31, 2023 | Dec. 31, 2022
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WEIGHTED AVERAGE ASSUMPTIONS: |  |
Discount rate | 5.12% | 5.45%
Ages 25-34 |  |
WEIGHTED AVERAGE ASSUMPTIONS: |  |
Salary scale | 5.00% | 5.00%
Ages 35-44 |  |
WEIGHTED AVERAGE ASSUMPTIONS: |  |
Salary scale | 4.00% | 4.00%
Ages 45-54 |  |
WEIGHTED AVERAGE ASSUMPTIONS: |  |
Salary scale | 3.00% | 3.00%
Ages 55+ |  |
WEIGHTED AVERAGE ASSUMPTIONS: |  |
Salary scale | 2.50% | 2.50%

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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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- Definition Weighted average rate increase of compensation, used to determine benefit obligation of defined benefit plan. Plan includes, but is not limited to, pay-related 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)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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