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DEBT - Schedule of Maturities of Debt (Footnote) (Details)
CAD in Millions, $ in Millions
12 Months Ended
Jan. 14, 2016
USD ($)
extension_option
Jan. 14, 2016
CAD
extension_option
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Senior Notes [Member]        
Debt Instrument [Line Items]        
Debt discount not included in outstanding principal balance | $     $ 0.6 $ 0.7
Prior Revolving Credit Facility [Member]        
Debt Instrument [Line Items]        
Optional extension period     1 year  
Prior Term Loans [Member]        
Debt Instrument [Line Items]        
Optional extension period     1 year  
Subsequent Event [Member] | Prior Term Loans [Member]        
Debt Instrument [Line Items]        
Increase in amount outstanding $ 45.0 CAD 35.0    
Revolving Credit Facility [Member] | Subsequent Event [Member] | Revolving Credit Facility [Member]        
Debt Instrument [Line Items]        
Optional extension period 6 months 6 months    
Number of optional extensions | extension_option 2 2