Quarterly report pursuant to Section 13 or 15(d)

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

v3.20.1
Long-Term Debt - Components of Long-term Debt (Details) - USD ($)
3 Months Ended 6 Months Ended
Mar. 28, 2020
Mar. 28, 2020
Sep. 28, 2019
Mar. 30, 2019
Dec. 31, 2017
Dec. 14, 2017
Nov. 09, 2015
Debt Instrument [Line Items]              
Total $ 693,725,000 $ 693,725,000 $ 693,150,000 $ 697,765,000      
Less current portion (103,000) (103,000) (113,000) (5,119,000)      
Long-term portion 693,622,000 693,622,000 693,037,000 692,646,000      
Senior notes              
Debt Instrument [Line Items]              
Unamortized debt issuance costs (6,524,000) (6,524,000) (7,158,000) (7,791,000)      
Total 693,476,000 693,476,000 692,842,000 692,209,000      
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     $ 400,000,000
Debt instrument interest rate stated, percentage 6.125% 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   $ 300,000,000  
Total $ 296,300,000 $ 296,300,000 296,100,000 295,900,000      
Debt instrument interest rate stated, percentage 5.125% 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 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 $ 249,000 $ 249,000 $ 308,000 $ 5,556,000