Long-Term Debt - Revolving Credit Facilities - Additional Information (Detail)
CAD in Millions
 12 Months Ended
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Dec. 31, 2015
EUR (€)
Dec. 31, 2015
CAD
Dec. 31, 2014
CAD
Dec. 31, 2011
CAD
Canadian First-Tier European Subsidiaries            
Line Of Credit Facility [Line Items]            
Issuance of letter of credit $ 25,000,000          
Revolving North American Credit Facility            
Line Of Credit Facility [Line Items]            
Issuance of letter of credit $ 125,000,000          
Line of Credit Maturity 2017-06          
Borrowings under credit facility during the period $ 0 $ 81,000,000        
Repayments of Lines of Credit 0 $ 92,100,000        
Amount available for Borrowing $ 68,300,000          
Revolving North American Credit Facility | Minimum            
Line Of Credit Facility [Line Items]            
Fixed charge coverage ratio to be maintained 110.00%          
Revolving North American Credit Facility | Minimum | London Interbank Offered Rate (LIBOR)            
Line Of Credit Facility [Line Items]            
Debt instrument basis spread on variable rate 1.50%          
Revolving North American Credit Facility | Minimum | Base Rate            
Line Of Credit Facility [Line Items]            
Debt instrument basis spread on variable rate 0.50%          
Revolving North American Credit Facility | Maximum            
Line Of Credit Facility [Line Items]            
Fixed charge coverage ratio to be maintained 100.00%          
Revolving North American Credit Facility | Maximum | London Interbank Offered Rate (LIBOR)            
Line Of Credit Facility [Line Items]            
Debt instrument basis spread on variable rate 2.00%          
Revolving North American Credit Facility | Maximum | Base Rate            
Line Of Credit Facility [Line Items]            
Debt instrument basis spread on variable rate 1.00%          
Letter Of Credit            
Line Of Credit Facility [Line Items]            
Aggregate letter of credit outstanding amount $ 15,000,000          
Letter Of Credit | Prior to December 31, 2014            
Line Of Credit Facility [Line Items]            
Aggregate letter of credit outstanding amount | CAD         CAD 7.9  
European Credit Facility            
Line Of Credit Facility [Line Items]            
Issuance of letter of credit | €     € 120,000,000      
Line of Credit Maturity 2017-09          
Borrowings under credit facility during the period $ 0          
Repayments of Lines of Credit 0          
Amount available for Borrowing 25,300,000   € 23,100,000      
Outstanding borrowings under this credit facility $ 0          
Percentage of borrowings available under credit facility 19.00%   19.00% 19.00%    
European Credit Facility | London Interbank Offered Rate (LIBOR)            
Line Of Credit Facility [Line Items]            
Debt instrument basis spread on variable rate 1.90%          
Economic Development Agency Credit Facility            
Line Of Credit Facility [Line Items]            
Issuance of letter of credit | CAD           CAD 4.5
Outstanding borrowings under this credit facility $ 3,300,000     CAD 4.5