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PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS (Tables) | 3 Months Ended
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Mar. 31, 2025
Retirement Benefits [Abstract] |
Schedule of Net Benefit Costs | Components of net periodic benefit cost (benefit) included in net loss are as follows:
| Pension Benefits | Other Benefits
| Three Months Ended March 31, |  | Three Months Ended March 31,
(in thousands) | 2025 |  | 2024 |  | 2025 |  | 2024
Interest cost | $ | 10,224 |  |  | $ | 10,808 |  |  | $ | 63 |  |  | $ | 70 |
Expected return on plan assets | (9,683) |  |  | (11,200) |  |  | — |  |  | — |
Amortization of prior service cost | 78 |  |  | 53 |  |  | 71 |  |  | 173 |
Benefit plans, net (1) | 619 |  |  | (339) |  |  | 134 |  |  | 243 |
Service cost included in COS (2) | 195 |  |  | 171 |  |  | 5 |  |  | 4 |
Net periodic benefit cost (benefit) | $ | 814 |  |  | $ | (168) |  |  | $ | 139 |  |  | $ | 247 |
(1) Benefit plans, net, which is presented separately in the Condensed Consolidated Statements of Operations, is not allocated to the segments. (2) Service cost related to a small group of active participants is presented within Cost of operations in the Condensed Consolidated Statements of Operations and is recorded at the B&W Thermal segment level.

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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://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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