Debt - Long-term Debt (Details) $ in Thousands	12 Months Ended
Dec. 31, 2025 USD ($)	Aug. 05, 2025 USD ($)	Dec. 31, 2024 USD ($)
Long-term debt
Principal amount	$ 688,929		$ 1,239,179
Unamortized discount and debt issuance costs	14,608		15,454
Total long-term debt	674,321		1,223,725
Current portion of long-term debt	4,063		22,000
Long-term debt, net	670,258		1,201,725
Long-term debt maturities
Scheduled principal payments 2026	4,100
Scheduled principal payments 2027	8,100
Scheduled principal payments 2028	8,100
Scheduled principal payments 2029	12,200
Scheduled principal payments 2030	$ 292,500
Consolidated leverage ratio	3.50
Consolidated interest coverage ratio	3.00
6.7% Senior Notes
Long-term debt
Interest rate on debt	6.70%
Principal amount	$ 55,059		55,059
Long term debt	54,138		54,053
Unamortized discount and debt issuance costs	$ 921		1,006
Long-term debt maturities
Redemption price, percentage	100.00%
6.25% Senior Notes
Long-term debt
Interest rate on debt	6.25%
Principal amount	$ 105,822		105,822
Long term debt	102,198		102,190
Unamortized discount and debt issuance costs	$ 3,624		3,632
5.50% Senior Notes
Long-term debt
Interest rate on debt	5.50%
Principal amount	$ 98,498		98,498
Long term debt	95,202		95,186
Unamortized discount and debt issuance costs	$ 3,296		3,312
5.5% June 2070 Senior Notes
Long-term debt
Interest rate on debt	5.50%
Principal amount	$ 104,550	$ 104,500	104,550
Long term debt	101,335		101,318
Unamortized discount and debt issuance costs	$ 3,215		3,232
Callable Notes
Long-term debt maturities
Redemption price, percentage	100.00%
Receivables securitization agreement
Long-term debt
Principal amount	$ 0		2,000
Unamortized discount and debt issuance costs	0		0
Finance lease obligations	0		2,000
Export credit financing agreement
Long-term debt
Principal amount	0		150,000
Long term debt	0		149,502
Unamortized discount and debt issuance costs	0		498
Term Loan Agreements
Long-term debt
Principal amount	325,000		723,250
Long term debt	321,448		719,476
Unamortized discount and debt issuance costs	3,552		$ 3,774
Subordination Agreement
Long-term debt maturities
Consolidated funded indebtedness	0
Refinancing indebtedness	0
Subordination Agreement \| Maximum
Long-term debt maturities
Consolidated funded indebtedness	105,000
Refinancing indebtedness	$ 250,000
Treasury Rate \| 6.7% Senior Notes
Long-term debt
Contractual spread	0.30%

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The minimum interest coverage ratio required according to the terms for borrowing under this debt instrument.

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Refinancing Indebtedness

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Amount of short-term and long-term debt and lease obligation.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Present value of lessee's discounted obligation for lease payments from finance lease.

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Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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