XML 96 R81.htm IDEA: XBRL DOCUMENT v3.8.0.1
Long-Term Debt - Additional Information (Detail)
12 Months Ended
Dec. 29, 2017
USD ($)
Dec. 31, 2017
USD ($)
Dec. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
Dec. 14, 2016
USD ($)
Debt Instrument [Line Items]          
Long-term debt   $ 218,400,000 $ 268,800,000    
Repayment of term loan   50,000,000 20,000,000 $ 12,000,000  
Finance cost capitalized   2,700,000 2,700,000 1,500,000  
Amortization of deferred finance costs   $ 600,000 $ 400,000 1,200,000  
Maximum ratio of net debt to EBITDA   3.01      
Minimum ratio of EBITDA to net interest   4.01      
Weighted average rate of interest on borrowings   2.59% 1.72%    
Payments of interest on long-term debt   $ 7,200,000 $ 2,600,000 2,300,000  
Net cash outflows in respect of refinancing costs   0 1,200,000 $ 1,500,000  
Revolving Credit Facility [Member]          
Debt Instrument [Line Items]          
Long-term debt   $ 121,000,000 161,000,000    
Finance cost capitalized     1,200,000    
Revolving Credit Facility [Member] | Third Amendment and Restatement Agreement [Member]          
Debt Instrument [Line Items]          
Revolving Credit Facility         $ 200,000,000
Revolving Credit Facility [Member] | Third Amended and Restated Credit Agreement [Member]          
Debt Instrument [Line Items]          
Termination date of the revolving facility   Revolving facility remains November 6, 2020. A repayment for the term loan of $11,000,000 was made on December 29, 2017, to be followed by a $16,500,000 installment due December 28, 2018 and a $22,000,000 installment due December 28, 2019, with the outstanding balance due on November 6, 2020.      
Repayment of term loan $ 11,000,000        
Installment due December 28, 2018   $ 16,500,000      
Installment due December 28, 2019   22,000,000      
Term Loan [Member]          
Debt Instrument [Line Items]          
Long-term debt   $ 99,000,000 $ 110,000,000    
Term Loan [Member] | Revolving Credit Facility [Member] | Third Amended and Restated Credit Agreement [Member]          
Debt Instrument [Line Items]          
Long-term debt         $ 110,000,000