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Postretirement Benefit Plans (Tables) | 6 Months Ended
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Jun. 30, 2026
Retirement Benefits [Abstract] |
Components of Net Periodic Benefit Cost | Components of Net Periodic Benefit Cost
|  | UNITED STATES |
(In thousands) |  | Three Months Ended June 30, |  |  | Six Months Ended June 30, |
|  | 2026 |  |  | 2025 |  |  | 2026 |  |  | 2025 |
Interest cost |  | $ | 1,646 |  |  | $ | 1,700 |  |  | $ | 3,292 |  |  | $ | 3,400 |
Expected return on plan assets |  |  | (1,847 | ) |  |  | (2,003 | ) |  |  | (3,695 | ) |  |  | (4,005 | )
Amortization of net actuarial loss (gain) |  |  | 109 |  |  |  | (19 | ) |  |  | 217 |  |  |  | (38 | )
Net periodic benefit cost |  | $ | (92 | ) |  | $ | (322 | ) |  | $ | (186 | ) |  | $ | (643 | )
|  | UNITED KINGDOM |
(In thousands) |  | Three Months Ended June 30, |  |  | Six Months Ended June 30, |
|  | 2026 |  |  | 2025 |  |  | 2026 |  |  | 2025 |
Interest cost |  | $ | 178 |  |  | $ | 178 |  |  | $ | 357 |  |  | $ | 346 |
Expected return on plan assets |  |  | (201 | ) |  |  | (206 | ) |  |  | (403 | ) |  |  | (400 | )
Amortization of net actuarial loss |  |  | 85 |  |  |  | 97 |  |  |  | 170 |  |  |  | 189 |
Net periodic benefit cost |  | $ | 62 |  |  | $ | 69 |  |  | $ | 124 |  |  | $ | 135 |
Defined Contribution Plan Expenses for Company's Qualified Contribution Plans | Defined contribution plan expenses for the Company’s qualified contribution plans were as follows:
(In thousands) |  | Three Months Ended June 30, |  |  | Six Months Ended June 30, |
|  | 2026 |  |  | 2025 |  |  | 2026 |  |  | 2025 |
Retirement savings contributions |  | $ | 2,410 |  |  | $ | 2,344 |  |  | $ | 4,654 |  |  | $ | 4,559 |
Profit sharing contributions |  |  | 1,107 |  |  |  | 495 |  |  |  | 1,668 |  |  |  | 1,605 |
Total defined contribution plan expenses |  | $ | 3,517 |  |  | $ | 2,839 |  |  | $ | 6,322 |  |  | $ | 6,164 |

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- Definition Tabular disclosure of defined contribution pension plans or defined contribution other postretirement plans, separately for pension plans and other postretirement benefit plans. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -SubTopic 70 -Topic 715 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480794/715-70-50-1 + Details
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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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