Quarterly report pursuant to Section 13 or 15(d)

Borrowings - Additional Information (Details)

v3.8.0.1
Borrowings - Additional Information (Details)
4 Months Ended 9 Months Ended
Apr. 16, 2017
USD ($)
Oct. 01, 2017
USD ($)
Oct. 02, 2016
USD ($)
Apr. 13, 2017
Dec. 25, 2016
USD ($)
Jun. 30, 2016
USD ($)
Borrowings            
Debt issuance costs   $ 664,000 $ 1,058,000      
Loan origination costs   2,500,000     $ 2,300,000  
New Credit Facility | Revolving line of credit            
Borrowings            
Maximum borrowing capacity           $ 400,000,000
Additional pricing tiers, lease adjusted leverage ratio threshold       4.75    
Debt issuance costs $ 700,000          
New Credit Facility | Revolving line of credit | Through October 1, 2017            
Borrowings            
Covenant compliance, lease adjusted leverage ratio       5.25    
New Credit Facility | Revolving line of credit | October 2, 2017 through July 15, 2018            
Borrowings            
Covenant compliance, lease adjusted leverage ratio       5.0    
New Credit Facility | Revolving line of credit | July 16, 2018 and Thereafter            
Borrowings            
Covenant compliance, lease adjusted leverage ratio       4.75    
New Credit Facility | Letter of credit | Line of credit            
Borrowings            
Maximum borrowing capacity           25,000,000
New Credit Facility | Swingline loans | Line of credit            
Borrowings            
Maximum borrowing capacity           $ 15,000,000
Credit Facility | Revolving line of credit            
Borrowings            
Amounts outstanding         335,500,000  
Credit Facility | Letter of credit            
Borrowings            
Amounts outstanding         $ 8,800,000  
Credit Facility | Line of credit            
Borrowings            
Amounts outstanding   275,900,000        
Credit Facility | Letter of credit | Line of credit            
Borrowings            
Amounts outstanding   $ 7,600,000