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Financial Instruments - Schedule of Carrying Amounts and Estimated Fair Values of Financial Instruments (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
9.000% Second-Priority Senior Secured Notes due February 2029    
Debt Instrument [Line Items]    
Carrying Amount $ 615,629 $ 614,058
Fair Value 651,313 649,425
9.375% Second-Priority Senior Secured Notes due February 2031    
Debt Instrument [Line Items]    
Carrying Amount 613,135 612,131
Fair Value $ 656,713 $ 656,250