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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, 2018
Oct. 31, 2017
Debt Instrument [Line Items]      
Credit agreement term 5 years    
Credit available under borrowing agreement $ 80.0    
Average interest rate   3.40% 2.20%
Line of credit facility outstanding   $ 15.0 $ 20.0
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%