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Fair Value Measurements (Carrying Value and Fair Value of Debt by Hierarchy Level) (Details) - USD ($)
$ in Thousands
Dec. 31, 2023
Dec. 25, 2022
Secured debt | Senior Secured Credit Facility | Fair value, inputs, level 2 | Revolving credit facility    
Fair Value, Assets Measured on Recurring and Nonrecurring Basis [Line Items]    
Long-term debt, fair value $ 381,000 $ 430,000
Secured debt | Senior Secured Credit Facility | Carrying value measurement | Revolving credit facility    
Fair Value, Assets Measured on Recurring and Nonrecurring Basis [Line Items]    
Long-term debt, fair value 381,000 430,000
Convertible debt | 2025 Notes | Fair value, inputs, level 2    
Fair Value, Assets Measured on Recurring and Nonrecurring Basis [Line Items]    
Long-term debt, fair value 265,896 198,843
Convertible debt | 2025 Notes | Carrying value measurement    
Fair Value, Assets Measured on Recurring and Nonrecurring Basis [Line Items]    
Long-term debt, fair value 104,786 105,000
Unsecured debt | 2029 Notes | Fair value, inputs, level 2    
Fair Value, Assets Measured on Recurring and Nonrecurring Basis [Line Items]    
Long-term debt, fair value 277,809 260,265
Unsecured debt | 2029 Notes | Carrying value measurement    
Fair Value, Assets Measured on Recurring and Nonrecurring Basis [Line Items]    
Long-term debt, fair value $ 300,000 $ 300,000