Annual report pursuant to Section 13 and 15(d)

Derivatives and Hedging - Narrative (Detail)

v3.20.4
Derivatives and Hedging - Narrative (Detail)
$ in Thousands
 12 Months Ended
Nov. 08, 2018
Jan. 08, 2018
USD ($)
Sep. 03, 2014
USD ($)
derivative_instrument
Dec. 26, 2020
USD ($)
Dec. 28, 2019
USD ($)
Dec. 26, 2020
CAD ($)
Dec. 28, 2019
CAD ($)
Interest rate swaps              
Derivative [Line Items]              
Number of derivative agreements | derivative_instrument     2        
Term of derivative instrument     3 years        
Fixed interest rate     2.20%        
Applicable interest rate margin     3.50%        
Effective rate     5.70%        
2014 Swap 1              
Derivative [Line Items]              
Notional amount     $ 90,000,000        
2014 Swap 2              
Derivative [Line Items]              
Notional amount     $ 40,000,000        
2018 Swap 1              
Derivative [Line Items]              
Term of derivative instrument   3 years          
Notional amount   $ 90,000,000          
Fixed interest rate   2.30%          
Applicable interest rate margin   4.00%          
Effective rate   6.30%          
2018 Swap 2              
Derivative [Line Items]              
Term of derivative instrument 3 years            
Notional amount   $ 60,000,000          
Fixed interest rate   3.10%          
Applicable interest rate margin   4.00%          
Effective rate   7.10%          
Fair Value, Recurring | Interest rate swaps              
Derivative [Line Items]              
Derivative liability       $ 4,193,000 $ 3,592,000    
Fair Value, Recurring | Foreign exchange forward contracts              
Derivative [Line Items]              
Derivative liability         (12,000)    
Derivative asset       12,000 (12,000)    
Not Designated as Hedging Instrument | Interest rate swaps              
Derivative [Line Items]              
Gain (loss) on derivative       (601,000) (2,608,000)    
Not Designated as Hedging Instrument | Foreign exchange forward contracts              
Derivative [Line Items]              
Notional amount           $ 9,652 $ 1,326
Gain (loss) on derivative       557,000 $ 50,000    
Not Designated as Hedging Instrument | Other non-current liabilities | Interest rate swaps              
Derivative [Line Items]              
Derivative liability       3,592,000      
Not Designated as Hedging Instrument | Other non-current liabilities | 2018 Swap 2              
Derivative [Line Items]              
Derivative liability       3,484,000      
Not Designated as Hedging Instrument | Other current liabilities | 2018 Swap 1              
Derivative [Line Items]              
Derivative liability       $ 709,000