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Fair Value Measurements (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
Fair Value Measurements (Details) - USD ($) $ in Thousands	Jun. 28, 2025	Jun. 29, 2024	Jun. 28, 2025	Jun. 29, 2024	Dec. 28, 2024
Changes in level 3
Level 3 activity	$ 0	$ 0	$ 0	$ 0
Tranche B term loans due 2029
Financial assets and liabilities at fair value
Face amount of senior notes	$ 447,800		$ 447,800		$ 450,000
5.25% senior notes due 2027
Financial assets and liabilities at fair value
Interest rate (as a percent)	5.25%		5.25%		5.25%
8.00% senior secured notes due 2028
Financial assets and liabilities at fair value
Interest rate (as a percent)	8.00%		8.00%		8.00%
Face amount of senior notes	$ 799,300		$ 799,300		$ 799,300
Carrying Value \| Revolving credit loans
Financial assets and liabilities at fair value
Loans Payable, Fair Value Disclosure	235,000		235,000		245,000
Carrying Value \| Tranche B term loans due 2029
Financial assets and liabilities at fair value
Loans Payable, Fair Value Disclosure	443,702		443,702		445,568
Carrying Value \| 5.25% senior notes due 2027
Financial assets and liabilities at fair value
Loans Payable, Fair Value Disclosure	529,310		529,310		550,000
Carrying Value \| 8.00% senior secured notes due 2028
Financial assets and liabilities at fair value
Loans Payable, Fair Value Disclosure	798,402		798,402		798,283
Fair Value, Recurring [Member] \| Fair Value \| Revolving credit loans \| Fair Value, Inputs, Level 2 [Member]
Financial assets and liabilities at fair value
Loans Payable, Fair Value Disclosure	235,000		235,000		245,000
Fair Value, Recurring [Member] \| Fair Value \| Tranche B term loans due 2029
Financial assets and liabilities at fair value
Loans Payable, Fair Value Disclosure	403,769		403,769		445,568
Fair Value, Recurring [Member] \| Fair Value \| 5.25% senior notes due 2027
Financial assets and liabilities at fair value
Loans Payable, Fair Value Disclosure	480,349		480,349		522,500
Fair Value, Recurring [Member] \| Fair Value \| 8.00% senior secured notes due 2028
Financial assets and liabilities at fair value
Loans Payable, Fair Value Disclosure	$ 763,472		$ 763,472		$ 818,240