Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt - Components of Long-term Debt (Details)

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Long-Term Debt - Components of Long-term Debt (Details) - USD ($)
3 Months Ended
Dec. 28, 2019
Sep. 28, 2019
Dec. 29, 2018
Dec. 31, 2017
Dec. 14, 2017
Nov. 09, 2015
Debt Instrument [Line Items]            
Total $ 693,436,000 $ 693,150,000 $ 692,449,000      
Less current portion (107,000) (113,000) (117,000)      
Long-term portion 693,329,000 693,037,000 692,332,000      
Senior notes            
Debt Instrument [Line Items]            
Unamortized debt issuance costs (6,841,000) (7,158,000) (8,108,000)      
Total 693,159,000 692,842,000 691,892,000      
Senior notes | Senior notes, interest at 6.125%, payable semi-annually, principal due November 2023            
Debt Instrument [Line Items]            
Notes $ 400,000,000 400,000,000 400,000,000     $ 400,000,000
Debt instrument interest rate stated, percentage 6.125%         6.125%
Senior notes | Senior notes, interest at 5.125%, payable semi-annually, principal due February 2028            
Debt Instrument [Line Items]            
Notes $ 300,000,000 300,000,000 300,000,000   $ 300,000,000  
Total $ 296,200,000 296,100,000 295,700,000      
Debt instrument interest rate stated, percentage 5.125%     5.125% 5.125%  
Secured debt | Base rate borrowings            
Debt Instrument [Line Items]            
Debt Instrument, Basis Spread on Variable Rate 0.00%          
Secured debt | Asset-based revolving credit facility, interest at LIBOR plus a margin of 1.00% to 1.50% or Base Rate plus a margin of 0.0% to 0.50%, final maturity September 2024.            
Debt Instrument [Line Items]            
Total $ 0 0 0      
Secured debt | Asset-based revolving credit facility, interest at LIBOR plus a margin of 1.00% to 1.50% or Base Rate plus a margin of 0.0% to 0.50%, final maturity September 2024. | Minimum | LIBOR-based borrowings            
Debt Instrument [Line Items]            
Debt Instrument, Basis Spread on Variable Rate 1.00%          
Secured debt | Asset-based revolving credit facility, interest at LIBOR plus a margin of 1.00% to 1.50% or Base Rate plus a margin of 0.0% to 0.50%, final maturity September 2024. | Minimum | Base rate borrowings            
Debt Instrument [Line Items]            
Debt Instrument, Basis Spread on Variable Rate 0.00%          
Secured debt | Asset-based revolving credit facility, interest at LIBOR plus a margin of 1.00% to 1.50% or Base Rate plus a margin of 0.0% to 0.50%, final maturity September 2024. | Maximum | LIBOR-based borrowings            
Debt Instrument [Line Items]            
Debt Instrument, Basis Spread on Variable Rate 1.50%          
Secured debt | Asset-based revolving credit facility, interest at LIBOR plus a margin of 1.00% to 1.50% or Base Rate plus a margin of 0.0% to 0.50%, final maturity September 2024. | Maximum | Base rate borrowings            
Debt Instrument [Line Items]            
Debt Instrument, Basis Spread on Variable Rate 0.50%          
Other notes payable            
Debt Instrument [Line Items]            
Total $ 277,000 $ 308,000 $ 557,000