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POSTRETIREMENT BENEFIT PLANS (Tables) | 6 Months Ended
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Jun. 30, 2026
Retirement Benefits [Abstract] |
Schedule of Components of Net Benefit Costs | The components of benefit plans cost other than the service cost are included in the caption Non-operating benefit costs in our Statement of Operations.
PRINCIPAL PENSION PLANS | Three months ended June 30 |  | Six months ended June 30
| 2026 | 2025 |  | 2026 | 2025
Service cost for benefits earned | $ | 13 |  | $ | 14 |  |  | $ | 25 |  | $ | 33 |
Prior service cost amortization | (1) |  | (3) |  |  | (2) |  | (5) |
Expected return on plan assets | (358) |  | (375) |  |  | (717) |  | (750) |
Interest cost on benefit obligations | 310 |  | 326 |  |  | 620 |  | 651 |
Net actuarial gain amortization | (110) |  | (125) |  |  | (219) |  | (253) |
Net periodic expense (income) | $ | (146) |  | $ | (163) |  |  | $ | (293) |  | $ | (324) |

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- Definition Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (q) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-5 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 715 -SubTopic 20 -Subparagraph (h) -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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