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Inventories - Schedule of Inventories (Detail) - USD ($) $ in Thousands | Jul. 31, 2020 | Oct. 31, 2019
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Inventory Disclosure [Abstract] |  |
Finished goods | $ 196,611 | $ 183,973
Raw materials and component parts | 107,145 | 102,044
Work-in-process | 54,123 | 42,904
Inventories - gross | 357,879 | 328,921
Obsolescence and other reserves | (41,570) | (39,377)
LIFO reserve | (5,752) | (6,145)
Inventories - net | $ 310,557 | $ 283,399

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- Definition Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.6(a)(1)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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