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Derivative Financial Instruments - Narrative (Details)
$ in Millions, $ in Millions
3 Months Ended 6 Months Ended
Feb. 28, 2020
USD ($)
Jan. 31, 2020
USD ($)
Jan. 02, 2020
USD ($)
Jun. 30, 2020
USD ($)
instrument
Jun. 30, 2019
USD ($)
Jun. 30, 2020
USD ($)
instrument
Jun. 30, 2019
USD ($)
Jun. 30, 2020
AUD ($)
instrument
Jun. 30, 2020
NZD ($)
instrument
Jan. 31, 2020
CAD ($)
Jan. 02, 2020
CAD ($)
Dec. 31, 2019
CAD ($)
Derivative [Line Items]                        
Interest expense       $ 23,178,000 $ 24,098,000 $ 47,048,000 $ 45,674,000          
Foreign currency exchange gain (loss), net       315,000 $ (83,000) (177,000) $ (23,000)          
Derivative liability, including accrued interest       18,700,000   18,700,000            
Termination value       18,700,000   18,700,000            
Interest rate contracts                        
Derivative [Line Items]                        
Gain (loss) to be reclassified in next twelve months           (5,000,000.0)            
Foreign exchange forwards                        
Derivative [Line Items]                        
Gain (loss) to be reclassified in next twelve months           300,000            
January 2019 Agreement | Interest rate contracts                        
Derivative [Line Items]                        
Notational amount       $ 100,000,000.0   $ 100,000,000.0            
Notational amount, percentage       16.00%   16.00%   16.00% 16.00%      
August 2019 Agreement | Interest rate contracts                        
Derivative [Line Items]                        
Notational amount       $ 225,000,000.0   $ 225,000,000.0            
Notational amount, percentage       37.00%   37.00%   37.00% 37.00%      
January 2020 Agreement, Maturing February 28, 2020 | Foreign exchange forwards                        
Derivative [Line Items]                        
Notational amount                   $ 217,000,000.0    
Gain on settlement $ 2,800,000                      
Nova Cold Logistics | Foreign exchange forwards                        
Derivative [Line Items]                        
Number of derivative contracts | instrument       2   2   2 2      
Unrealized gain           $ 100,000            
Nova Cold Logistics | December 2019 Agreement, Maturing January 2, 2020 | Foreign exchange forwards                        
Derivative [Line Items]                        
Notational amount                       $ 217,000,000.0
Gain on settlement     $ 2,100,000                  
Nova Cold Logistics | December 2019 Agreement, Maturing January 31, 2020 | Foreign exchange forwards                        
Derivative [Line Items]                        
Notational amount                     $ 217,000,000.0  
Gain on settlement   $ 200,000                    
Australian Subsidiary | Intercompany Loan Receivable | Foreign exchange contracts                        
Derivative [Line Items]                        
Receivable hedged               $ 153.5        
New Zealand Subsidiary | Intercompany Loan Receivable | Foreign exchange contracts                        
Derivative [Line Items]                        
Receivable hedged                 $ 37.5