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Stock Compensation - Summary of Performance Stock Units (Detail) - Performance Stock Units [Member]
12 Months Ended
Oct. 31, 2018
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Outstanding Balance | shares 73,101
Granted | shares 121,167
Vested | shares 0
Cancelled | shares 0
Outstanding Balance | shares 194,268
Outstanding Balance | $ / shares $ 27.36
Granted | $ / shares 22.70
Vested | $ / shares 0
Cancelled | $ / shares 0
Outstanding Balance | $ / shares $ 24.45