Quarterly report pursuant to Section 13 or 15(d)

Borrowings - Additional Information (Details)

v3.7.0.1
Borrowings - Additional Information (Details)
4 Months Ended
Jun. 30, 2016
USD ($)
Apr. 16, 2017
USD ($)
Apr. 17, 2016
USD ($)
Apr. 13, 2017
Dec. 25, 2016
USD ($)
Borrowings          
Debt issuance costs   $ 664,000 $ 0    
Loan origination costs   2,800,000     $ 2,300,000
New Credit Facility | Revolving line of credit          
Borrowings          
Maximum borrowing capacity $ 400,000,000        
Additional borrowing capacity subject to lender participation 100,000,000        
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        
New Credit Facility | Canadian dollar borrowing equivalent | Line of credit          
Borrowings          
Maximum borrowing capacity $ 20,000,000        
Credit Facility | Revolving line of credit          
Borrowings          
Amounts outstanding         335,500,000
Credit Facility | Revolving line of credit | Federal Funds Rate          
Borrowings          
Interest rate margin (as a percent) 0.50%        
Credit Facility | Revolving line of credit | LIBOR          
Borrowings          
Interest rate margin (as a percent) 1.00%        
Credit Facility | Revolving line of credit | Canadian Dealer Offered Rate (CDOR)          
Borrowings          
Interest rate margin (as a percent) 1.00%        
Credit Facility | Letter of credit          
Borrowings          
Amounts outstanding         $ 8,800,000
Credit Facility | Line of credit          
Borrowings          
Amounts outstanding   300,000,000      
Credit Facility | Letter of credit | Line of credit          
Borrowings          
Amounts outstanding   $ 7,400,000