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. 30, 2017
Dec. 14, 2017
Sep. 30, 2017
Dec. 24, 2016
Nov. 09, 2015
Debt Instrument [Line Items]          
Total $ 691,336,000   $ 395,653,000 $ 395,408,000  
Less current portion (372,000)   (375,000) (397,000)  
Long-term portion 690,964,000   395,278,000 395,011,000  
Senior notes          
Debt Instrument [Line Items]          
Unamortized debt issuance costs (9,161,000)   (4,840,000) (5,436,000)  
Total 690,839,000   395,160,000 394,564,000  
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 maturity period Nov. 01, 2023        
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 $ 300,000,000.0 0 0  
Total $ 295,500,000        
Debt instrument interest rate stated, percentage 5.125% 5.125%      
Asset-based revolving credit facility, interest at LIBOR plus a margin of 1.25% to 1.50% or Base Rate plus a margin of 0.25% to 0.50%, final maturity April 2021          
Debt Instrument [Line Items]          
Total $ 0   0 0  
Debt instrument maturity period Apr. 01, 2021        
Asset-based revolving credit facility, interest at LIBOR plus a margin of 1.25% to 1.50% or Base Rate plus a margin of 0.25% to 0.50%, final maturity April 2021 | Base rate borrowings          
Debt Instrument [Line Items]          
Applicable interest margin rate on the credit facility 0.25%        
Asset-based revolving credit facility, interest at LIBOR plus a margin of 1.25% to 1.50% or Base Rate plus a margin of 0.25% to 0.50%, final maturity April 2021 | LIBOR-based borrowings          
Debt Instrument [Line Items]          
Applicable interest margin rate on the credit facility 1.25%        
Asset-based revolving credit facility, interest at LIBOR plus a margin of 1.25% to 1.50% or Base Rate plus a margin of 0.25% to 0.50%, final maturity April 2021 | Minimum | Base rate borrowings          
Debt Instrument [Line Items]          
Applicable interest margin rate on the credit facility 0.25%        
Asset-based revolving credit facility, interest at LIBOR plus a margin of 1.25% to 1.50% or Base Rate plus a margin of 0.25% to 0.50%, final maturity April 2021 | Minimum | LIBOR-based borrowings          
Debt Instrument [Line Items]          
Applicable interest margin rate on the credit facility 1.25%        
Asset-based revolving credit facility, interest at LIBOR plus a margin of 1.25% to 1.50% or Base Rate plus a margin of 0.25% to 0.50%, final maturity April 2021 | Maximum | Base rate borrowings          
Debt Instrument [Line Items]          
Applicable interest margin rate on the credit facility 0.50%        
Asset-based revolving credit facility, interest at LIBOR plus a margin of 1.25% to 1.50% or Base Rate plus a margin of 0.25% to 0.50%, final maturity April 2021 | Maximum | LIBOR-based borrowings          
Debt Instrument [Line Items]          
Applicable interest margin rate on the credit facility 1.50%        
Other notes payable          
Debt Instrument [Line Items]          
Total $ 497,000   $ 493,000 $ 844,000  
Asset-based revolving credit facility, interest at LIBOR plus a margin of 1.25% to 1.75% or Base Rate plus a margin of 0.25% to 0.75%, final maturity December 2018 | Minimum | Base rate borrowings          
Debt Instrument [Line Items]          
Applicable interest margin rate on the credit facility 0.25%        
Asset-based revolving credit facility, interest at LIBOR plus a margin of 1.25% to 1.75% or Base Rate plus a margin of 0.25% to 0.75%, final maturity December 2018 | Minimum | LIBOR-based borrowings          
Debt Instrument [Line Items]          
Applicable interest margin rate on the credit facility 1.25%        
Asset-based revolving credit facility, interest at LIBOR plus a margin of 1.25% to 1.75% or Base Rate plus a margin of 0.25% to 0.75%, final maturity December 2018 | Maximum | Base rate borrowings          
Debt Instrument [Line Items]          
Applicable interest margin rate on the credit facility 0.75%        
Asset-based revolving credit facility, interest at LIBOR plus a margin of 1.25% to 1.75% or Base Rate plus a margin of 0.25% to 0.75%, final maturity December 2018 | Maximum | LIBOR-based borrowings          
Debt Instrument [Line Items]          
Applicable interest margin rate on the credit facility 1.75%