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v3.25.1

Pension Plans (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2025 | Mar. 31, 2024 | Dec. 31, 2024
Pension Plans [Line Items] |  |  |
Return on plan assets |  |  | $ 42,877,000
Overfunded amount |  |  | 2,600,000
Retirement Plan [Member] |  |  |
Pension Plans [Line Items] |  |  |
Net periodic benefit |  |  | 17,500,000
Return on plan assets | $ 313,000 |  | 20,100,000
Net periodic expense | 22,000 | $ 13,000 |
Interest cost | 234,000 | 222,000 |
Service cost | 57,000 | 67,000 |
Defined Benefit Plan, Prescription Drug Benefit, Net Periodic Postretirement Benefit Cost, (Increase) Decrease for Subsidy |  | 276,000 |
Postretirement Plan [Member] |  |  |
Pension Plans [Line Items] |  |  |
Net periodic benefit |  |  | $ 3,800,000
Net periodic expense | 25,000 | 54,000 |
Interest cost | 48,000 | 49,000 |
Service cost | 4,000 | $ 5,000 |
Amortization of net gains | $ 27,000 |  |

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- Definition Amount of payment to participant of defined benefit plan which decreases benefit obligation. For pension plan, payment includes, but is not limited to, pension benefits and death benefits. For other postretirement plan, payment includes, but is not limited to, prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-5 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 60 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480266/715-60-50-4 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a)(6) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 + Details
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