XML 74 R50.htm IDEA: XBRL DOCUMENT v3.20.1
Debt - Schedule of Debt Obligations (Parenthetical) (Detail)
$ in Millions, $ in Millions
Mar. 31, 2020
USD ($)
Mar. 31, 2020
CAD ($)
Dec. 31, 2019
USD ($)
Dec. 31, 2019
CAD ($)
Term Debt [Member]        
Debt Instrument [Line Items]        
Interest rate on debt 3.50% 3.50% 4.80% 4.80%
Revolving Credit Facility [Member]        
Debt Instrument [Line Items]        
Available capacity $ 300.0      
Revolving Credit Facility [Member] | Letter of Credit [Member]        
Debt Instrument [Line Items]        
Available capacity 1.9   $ 1.9  
Canada Line of Credit [Member]        
Debt Instrument [Line Items]        
Available capacity $ 5.0   $ 5.4  
Canada Line of Credit [Member] | Letter of Credit [Member]        
Debt Instrument [Line Items]        
Available capacity   $ 7.0   $ 7.0