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Financial Instruments - Schedule of Carrying Amounts and Estimated Fair Values of Financial Instruments (Details) - USD ($)
$ in Thousands
Sep. 30, 2025
Dec. 31, 2024
9.000% Second-Priority Senior Secured Notes due February 2029    
Debt Instrument [Line Items]    
Carrying Amount $ 613,301 $ 611,135
Fair Value 645,431 640,619
9.375% Second-Priority Senior Secured Notes due February 2031    
Debt Instrument [Line Items]    
Carrying Amount 611,646 610,264
Fair Value $ 652,556 $ 635,750