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Pension Benefits (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward] |  |  |  |
Defined Benefit Plan, service cost |  | $ 3,652,000 | $ 3,706,000 | $ 4,652,000
Defined Benefit Plan, interest cost |  | 3,209,000 | 3,200,000 | 2,314,000
Defined Benefit Plan, actuarial (gain) loss |  | (1,281,000) | 84,000 |
Defined Benefit Plan, benefits paid |  | (2,204,000) | (4,883,000) |
Defined Benefit Plan, settlements |  | (482,000) | 0 |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |
Defined Benefit Plan, fair value of plan assets at beginning of year |  | 45,692,000 | 36,414,000 |
Defined Benefit Plan, actual return on plan assets |  | 3,547,000 | 4,161,000 |
Defined Benefit Plan, employer contribution |  | 10,482,000 | 10,000,000 | 6,000,000
Defined Benefit Plan, benefits paid excluding settlements |  | 2,204,000 | 4,883,000 |
Defined Benefit Plan, Plan Assets, Benefits Paid |  | 2,700,000 | 4,900,000 | 2,000,000
Defined Benefit Plan, Plan Assets, Payment for Settlement |  | 482,000 | 0 |
Defined Benefit Plan, fair value of plan assets at end of year |  | 57,035,000 | 45,692,000 | 36,414,000
Defined Benefit Plan, funded status at end of year |  | (13,127,000) | (21,576,000) |
Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets [Abstract] |  |  |  |
Defined Benefit Plan, projected benefit obligation |  | 70,162,000 | 67,268,000 | 65,161,000
Defined Benefit Plan, accumulated benefit obligation |  | 58,807,000 | 55,557,000 |
Defined Benefit Plan, underfunded accumulated benefit obligation |  | $ 1,772,000 | 9,865,000 |
Defined Benefit Plan, unrecognized net gain (loss) amortization threshold |  | 10.00% |  |
Pre-tax Amounts Recognized in Accumulated Other Comprehensive Income [Abstract] |  |  |  |
Defined Benefit Plan, unrecognized actuarial losses |  | $ 1,500,000 | 3,300,000 |
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss) [Abstract] |  |  |  |
Other Comprehensive Income (Loss), Defined Benefit Plan, net actuarial gain (loss) |  | 1,681,000 | 1,737,000 | 10,327,000
Other Comprehensive Income (Loss), Defined Benefit Plan, amortization of net actuarial loss |  | 46,000 | 68,000 | 931,000
Other Comprehensive Income (Loss), Defined Benefit Plan, settlements |  | 124,000 | 0 | 0
Other Comprehensive Income (Loss), Defined Benefit Plan, total pension liability adjustment, pre-tax |  | 1,851,000 | 1,805,000 | 11,258,000
Other Comprehensive Income (Loss), Defined Benefit Plan, tax (expense) benefit |  | (405,000) | (390,000) | (2,431,000)
Other Comprehensive Income (Loss), Defined Benefit Plan, total pension liability adjustment, net | [1] | 1,446,000 | 1,415,000 | 8,827,000
Components of Net Periodic Benefit Costs for Both Pension Plans |  |  |  |
Defined Benefit Plan, service cost |  | 3,652,000 | 3,706,000 | 4,652,000
Defined Benefit Plan, interest cost |  | 3,209,000 | 3,200,000 | 2,314,000
Defined Benefit Plan, expected return on plan assets that reduces periodic pension benefit cost |  | (3,147,000) | (2,340,000) | (1,711,000)
Defined Benefit Plan, amortization of net actuarial loss |  | 46,000 | 68,000 | 931,000
Defined Benefit Plan, net periodic benefit cost |  | 3,760,000 | 4,634,000 | 6,186,000
Defined Benefit Plan, settlements |  | 124,000 | 0 | 0
Defined Benefit Plan, Total Net Benefit Cost |  | $ 3,884,000 | $ 4,634,000 | $ 6,186,000
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation and Net Periodic Benefit Cost [Abstract] |  |  |  |
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, discount rate |  | 5.60% | 5.00% |
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, rate of compensation increase |  | 3.50% | 3.50% |
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, discount rate |  | 5.10% | 5.20% | 3.10%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, expected return on plan assets |  | 6.50% | 6.30% | 3.60%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, rate of compensation increase |  | 3.50% | 3.50% | 4.80%
Defined Benefit Plan, Expected Future Employer Contributions [Abstract] |  |  |  |
Defined Benefit Plan, Expected Future Contributions in Next Fiscal Year |  | $ 8,200,000 |  |
Future Benefit Payments |  |  |  |
Defined Benefit Plan, Expected Future Benefit Payments in Year One |  | 9,726,000 |  |
Defined Benefit Plan, Expected Future Benefit Payments in Year Two |  | 7,606,000 |  |
Defined Benefit Plan, Expected Future Benefit Payments in Year Three |  | 5,233,000 |  |
Defined Benefit Plan, Expected Future Benefit Payments in Year Four |  | 4,880,000 |  |
Defined Benefit Plan, Expected Future Benefit Payments in Year Five |  | 4,637,000 |  |
Defined Benefit Plan, Expected Future Benefit Payments in Five Fiscal Years Thereafter |  | $ 26,858,000 |  |
Fair Value Recurring Basis Unobservable Input Reconciliation Asset Gain Loss Statement Of Other Comprehensive Income Extensible List Not Disclosed Flag |  | Other Comprehensive Income (Loss), Defined Benefit Plan, total pension liability adjustment, net | Other Comprehensive Income (Loss), Defined Benefit Plan, total pension liability adjustment, net |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Interest Cost, Statement of Income or Comprehensive Income [Extensible Enumeration] |  | General and administrative | General and administrative | General and administrative
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Expected Return (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] |  | General and administrative | General and administrative | General and administrative
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Amortization of Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] |  | General and administrative | General and administrative | General and administrative
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Settlement Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] |  | General and administrative | General and administrative | General and administrative
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] |  | General and administrative | General and administrative |
Nonqualified Plan |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |
Defined Benefit Plan, fair value of plan assets at beginning of year |  | $ 0 | $ 0 |
Defined Benefit Plan, fair value of plan assets at end of year |  | $ 0 | $ 0 | $ 0
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation and Net Periodic Benefit Cost [Abstract] |  |  |  |
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, expected return on plan assets |  | 0.00% | 0.00% | 0.00%
Defined Benefit Plan, Equity Securities |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |
Defined Benefit Plan, fair value of plan assets at beginning of year |  | $ 19,629,000 |  |
Defined Benefit Plan, fair value of plan assets at end of year |  | 23,364,000 | $ 19,629,000 |
Fixed Income Securities |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |
Defined Benefit Plan, fair value of plan assets at beginning of year |  | 11,646,000 |  |
Defined Benefit Plan, fair value of plan assets at end of year |  | 22,973,000 | 11,646,000 |
Other Securities |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |
Defined Benefit Plan, fair value of plan assets at beginning of year |  | 14,417,000 |  |
Defined Benefit Plan, fair value of plan assets at end of year |  | $ 10,698,000 | $ 14,417,000 |
[1] | Refer to Note 12 – Pension Benefits for discussion of the pension liability adjustment.

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- Definition Gain and loses in excess of 10% of the greater of the projected benefit obligation or fari value of plan assets will be amortized over the average remaining service period + References No definition available. + Details
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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 60 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480266/715-60-50-4 Reference 2: 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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- Definition Amount of payment, which decreases benefit obligation of defined benefit plan, for irrevocable action relieving primary responsibility for benefit obligation and eliminating risk for obligation and assets used to effect settlement. Transaction constituting settlement includes, but is not limited to, making lump-sum cash payment to participant in exchange for their rights to receive specified benefits and purchasing nonparticipating annuity contract. Excludes decreases to benefit obligation for remeasurement due to settlement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a)(10) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 + Details
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- Definition Amount of benefit for defined benefit plan expected to be paid in five fiscal years after fifth fiscal year following current fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 + Details
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- Definition Amount of benefit for defined benefit plan expected to be paid in next fiscal year following current fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 + Details
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- Definition Amount of benefit for defined benefit plan expected to be paid in fifth fiscal year following current fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 + Details
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- Definition Amount of benefit for defined benefit plan expected to be paid in fourth fiscal year following current fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 + Details
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