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Revolving Credit Facilities (Details) - Revolving Credit Facility - USD ($)
$ in Millions
1 Months Ended 12 Months Ended
Jun. 30, 2016
Oct. 31, 2019
Oct. 31, 2018
Debt Instrument [Line Items]      
Credit agreement term   5 years  
Credit available under borrowing agreement $ 80.0    
Average interest rate   3.80% 3.40%
Line of credit facility outstanding   $ 0.0 $ 15.0
Line of credit facility, unused capacity, commitment fee percentage 0.15%    
Additional borrowing capacity $ 50.0    
Maximum [Member]      
Debt Instrument [Line Items]      
Quarterly consolidated leverage ratio 2.50%    
Minimum [Member]      
Debt Instrument [Line Items]      
Quarterly consolidated leverage ratio 1.15%    
LIBOR | Maximum [Member]      
Debt Instrument [Line Items]      
Applicable margin (as a percent) 1.50%    
LIBOR | Minimum [Member]      
Debt Instrument [Line Items]      
Applicable margin (as a percent) 1.00%    
Base Rate | Maximum [Member]      
Debt Instrument [Line Items]      
Applicable margin (as a percent) 0.50%    
Base Rate | Minimum [Member]      
Debt Instrument [Line Items]      
Applicable margin (as a percent) 0.00%