Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Narrative (Details)

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Fair Value Measurements - Narrative (Details) - USD ($)
Dec. 28, 2019
Sep. 28, 2019
Dec. 29, 2018
Dec. 31, 2017
Dec. 14, 2017
Nov. 30, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Carrying value of senior subordinated notes $ 693,436,000 $ 693,150,000 $ 692,449,000      
Senior notes            
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Carrying value of senior subordinated notes $ 693,159,000 692,842,000 691,892,000      
Senior notes | Senior notes, interest at 5.125%, payable semi-annually, principal due February 2028            
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Debt, aggregate principal amount       $ 300,000,000    
Debt instrument interest rate stated, percentage 5.125%     5.125% 5.125%  
Estimated fair value of senior notes $ 312,200,000 307,100,000 273,600,000      
Carrying value of senior subordinated notes 296,200,000 296,100,000 295,700,000      
Senior notes | 6.125% senior notes due in November 2023            
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Debt, aggregate principal amount           $ 400,000,000
Debt instrument interest rate stated, percentage           6.125%
Estimated fair value of senior notes 413,800,000 414,600,000 402,000,000.0      
Carrying value of senior subordinated notes $ 397,000,000.0 $ 396,700,000 $ 396,200,000