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Long-Term Debt - Additional Information (Detail) - USD ($) $ in Thousands |  | 3 Months Ended | 6 Months Ended | 9 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | ---
Apr. 13, 2021 | Sep. 30, 2025 | Sep. 30, 2025 | Sep. 28, 2024 | Jun. 24, 2025 | Sep. 28, 2024 | Dec. 28, 2024 | Jan. 31, 2025 | Jan. 02, 2025
Debt Instrument |  |  |  |  |  |  |  |  |  |
Interest expense |  |  | $ 12,975 | $ 12,052 | $ 28,619 | $ 38,664 | $ 81,923 |  |  |
Loan outstanding amount |  |  | $ 465,000 | $ 465,000 |  |  |  | $ 1,445,000 |  |
Effective interest rate | [1] |  |  |  |  |  |  | 7.74% |  |
Average interest rate on outstanding debt, exclusive the impact of swap |  |  | 11.07% | 11.07% |  |  |  | 7.75% |  |
Average interest rate on outstanding debt, including the impact of swap |  |  |  |  |  |  |  | 7.47% |  |
4.500% Senior Secured Notes due 2029 |  |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |  |
Debt Instrument, maturity year |  | 2029 |  |  |  |  |  |  |  |
Debt Instrument Interest Rate Stated Percentage |  | 4.50% |  |  |  |  |  |  |  |
Loan outstanding amount |  | $ 500,000 |  |  |  |  |  |  |  |
Aggregate principal amount |  | 500,000 |  |  |  |  |  |  |  |
Term Loan Facility due April 13, 2028 |  |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |  |
Loan outstanding amount |  |  |  |  |  |  |  | $ 945,000 |  |
Effective interest rate | [1] |  |  |  |  |  |  | 9.37% |  |
New Term Loan Facility due June 24, 2030 |  |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |  |
Loan outstanding amount |  |  | $ 465,000 | $ 465,000 |  | 465,000 |  |  |  |
Line of credit facility, issued but undrawn letters of credit |  |  | $ 3,659 | 3,659 |  |  |  |  |  |
Percentage of net proceeds of any issuance or incurrence of debt by the Company or any of its restricted subsidiaries |  |  | 100.00% |  |  |  |  |  |  |
Excess of unrestricted cash |  |  | $ 100,000 | $ 100,000 |  |  |  |  |  |
Percentage of proceeds from the sale of certain assets and proceeds of certain casualty events |  |  | 100.00% |  |  |  |  |  |  |
Percentage of incurrence of new debt proceeds |  |  | 100.00% |  |  |  |  |  |  |
Percentage of aggregate principal amount of prepayments or refinancings, for first eighteen months following emergence date |  |  | 2.00% |  |  |  |  |  |  |
Percentage of aggregate principal amount of prepayments or refinancings, from eighteen-month anniversary of emergence Date to second anniversary of emergence Date |  |  | 2.00% |  |  |  |  |  |  |
Percentage of aggregate principal amount of prepayments or refinancings, from second anniversary of emergence date to third anniversary of emergence date |  |  | 1.00% |  |  |  |  |  |  |
Excess of aggregate principal amount of prepayments or refinancings |  |  | $ 200,000 |  |  |  |  |  |  |
Effective interest rate | [1] |  | 11.07% | 11.07% |  |  |  |  |  |
New Term Loan Facility due June 24, 2030 | Federal Funds Effective Rate |  |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |  |
Credit facility, interest rate |  |  | 0.50% |  |  |  |  |  |  |
New Term Loan Facility due June 24, 2030 | Term SOFR |  |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |  |
Credit facility, interest rate |  |  | 6.80% |  |  |  |  |  |  |
Debt instrument variable rate floor percentage |  |  | 0.50% |  |  |  |  |  |  |
New Term Loan Facility due June 24, 2030 | One-Month Term SOFR |  |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |  |
Credit facility, interest rate |  |  | 1.00% |  |  |  |  |  |  |
Debt instrument variable rate floor percentage |  |  | 1.50% |  |  |  |  |  |  |
New Term Loan Facility due June 24, 2030 | Twelve-Month Term SOFR |  |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |  |
Credit facility, interest rate |  |  | 5.80% |  |  |  |  |  |  |
New Term Loan Facility |  |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |  |
Aggregate principal amount |  |  | $ 465,492 | $ 465,492 |  |  |  |  |  |
Effective interest rate |  |  | 10.80% | 10.80% |  |  |  |  |  |
Senior Secured Notes due April 15, 2029 |  |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |  |
Loan outstanding amount |  |  |  |  |  |  |  | $ 500,000 |  |
Effective interest rate | [1] |  |  |  |  |  |  | 4.69% |  |
Prepetition Credit Agreement |  |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |  |
Credit Facility, maximum borrowing capacity |  | $ 1,175,000 |  |  |  |  |  |  |  |
Prepetition Credit Facilities and Prepetition Credit Agreement |  |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |  |
Discharge of outstanding liabilities |  |  |  |  |  | 1,116,000 |  |  |  |
Prepetition Term Loan Facility |  |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |  |
Debt Instrument, maturity year |  | 2028 |  |  |  |  |  |  |  |
Credit Facility, maximum borrowing capacity |  | $ 1,000,000 |  |  |  |  |  |  |  |
Contractual interest on obligations |  |  |  |  |  | 15,412 |  |  |  |
Excess contractual interest on obligations |  |  |  |  |  | $ 4,351 |  |  |  |
Prepetition Revolving Credit Facility |  |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |  |
Debt Instrument, maturity year |  | 2026 |  |  |  |  |  |  |  |
Credit Facility, maximum borrowing capacity |  | $ 175,000 |  |  |  |  |  |  |  |
Loan outstanding amount |  |  |  |  |  |  |  |  | $ 121,341 | $ 50,000
Revolving Credit Facility |  |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |  |
Effective interest rate | [1] |  |  |  |  |  |  | 0.00% |  |
[1] | Includes amortization of deferred financing costs and debt discount.

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