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Inventories - Schedule of Inventories (Detail) - USD ($)
$ in Thousands
Jul. 31, 2017
Oct. 31, 2016
Inventory Disclosure [Abstract]    
Raw materials and component parts $ 116,027 $ 85,802
Work-in-process 46,016 36,681
Finished goods 155,186 134,602
Inventories - gross 317,229 257,085
Obsolescence and other reserves (35,532) (29,324)
LIFO reserve (5,992) (7,400)
Inventories - net $ 275,705 $ 220,361