Fair Value Measurements - Debt Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Carrying Value
Gross carrying value of debt	$ 2,375,196	$ 2,539,609
Less: deferred financing costs	27,212	34,392
Long-term debt	2,347,984	2,505,217
Fair Value
Debt at fair value	$ 2,317,497	$ 2,414,792
7.375% senior priority guaranteed notes due May 2027
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Interest rate on senior notes (as a percent)	7.375%	7.375%
Carrying Value
Gross carrying value of debt	$ 546,050	$ 700,000
Fair Value
Debt at fair value	$ 555,049	$ 699,916
7.50% senior guaranteed notes due January 2028
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Interest rate on senior notes (as a percent)	7.50%	7.50%
Carrying Value
Gross carrying value of debt	$ 379,146	$ 389,609
Fair Value
Debt at fair value	$ 379,529	$ 362,823
1.75% senior exchangeable notes due June 2029
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Interest rate on senior notes (as a percent)	1.75%	1.75%
Carrying Value
Gross carrying value of debt	$ 250,000	$ 250,000
Fair Value
Debt at fair value	$ 193,560	$ 179,548
9.125% senior priority guaranteed notes due January 2030
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Interest rate on senior notes (as a percent)	9.125%	9.125%
Carrying Value
Gross carrying value of debt	$ 650,000	$ 650,000
Fair Value
Debt at fair value	$ 676,715	$ 661,401
8.875% Senior Guaranteed Notes due August 2031
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Interest rate on senior notes (as a percent)	8.875%	8.875%
Carrying Value
Gross carrying value of debt	$ 550,000	$ 550,000
Fair Value
Debt at fair value	$ 512,644	$ 511,104

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

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

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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

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