XML 86 R44.htm IDEA: XBRL DOCUMENT v3.20.1
Derivative Instruments (Narrative) (Details) - USD ($)
3 Months Ended
Feb. 29, 2020
Feb. 28, 2019
Nov. 30, 2019
Jul. 09, 2019
Derivative [Line Items]        
Derivative liabilities $ 1,000,000.0   $ 100,000  
Interest rate swap        
Derivative [Line Items]        
Notional amount       $ 150,000,000.0
Percentage of variable rate debt, managed variability 50.00%      
Fixed interest rate       1.855%
Derivative liabilities $ 4,900,000      
Forward Contracts        
Derivative [Line Items]        
Minimum maturity period, foreign currency derivative 30 days      
Maximum maturity period, foreign currency derivative 2 years      
Gains (losses) on foreign currency option contracts $ 600,000 $ 700,000    
London Interbank Offered Rate (LIBOR) | Interest rate swap        
Derivative [Line Items]        
Basis spread on variable rate       0.00%