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Leases (Details) - USD ($)
$ in Millions
12 Months Ended
Oct. 29, 2017
Oct. 30, 2016
Nov. 01, 2015
Leases      
Total rental expense for operating leases $ 2.1 $ 1.9 $ 2.2
Operating Leases, Future Minimum Lease Payments      
Future minimum lease payments under operating leases 6.5    
2018 1.7    
2019 1.3    
2020 1.0    
2021 0.8    
2022 0.8    
Later years $ 0.9