XML 44 R33.htm IDEA: XBRL DOCUMENT
v3.26.1

Employee Benefit Plans (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2026
Compensation Related Costs [Abstract] |
Schedule of Net Periodic Benefit Cost | The following table details the components of the net periodic benefit cost for pension obligations:
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2026 |  | 2025 |  | 2026 |  | 2025
Interest cost | $ | 5,331 |  |  | $ | 5,821 |  |  | $ | 10,621 |  |  | $ | 11,626 |
Expected return on plan assets | (5,246) |  |  | (4,916) |  |  | (10,445) |  |  | (9,836) |
Amortization of net actuarial loss | 316 |  |  | 421 |  |  | 688 |  |  | 799 |
Net periodic benefit cost | $ | 401 |  |  | $ | 1,326 |  |  | $ | 864 |  |  | $ | 2,589 |
The following table details the components of the net periodic benefit cost for black lung obligations:
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2026 |  | 2025 |  | 2026 |  | 2025
Service cost | $ | 625 |  |  | $ | 536 |  |  | $ | 1,249 |  |  | $ | 1,071 |
Interest cost | 1,512 |  |  | 1,463 |  |  | 3,025 |  |  | 2,926 |
Expected return on plan assets | (14) |  |  | (14) |  |  | (28) |  |  | (27) |
Amortization of net actuarial loss | 1,911 |  |  | 1,076 |  |  | 3,822 |  |  | 2,152 |
Net periodic benefit cost | $ | 4,034 |  |  | $ | 3,061 |  |  | $ | 8,068 |  |  | $ | 6,122 |

X
- References No definition available. + Details
Name: | us-gaap_CompensationRelatedCostsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- 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
Name: | us-gaap_ScheduleOfNetBenefitCostsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration