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Segment Information - Schedule of Segment Reporting Information By Segment (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jan. 31, 2018 | Jan. 31, 2017 | Jan. 31, 2018 | Jan. 31, 2017
Segment Reporting Information [Line Items] |  |  |  |
Sales to External Customers | $ 287,780 | $ 268,001 | $ 577,931 | $ 548,177
Segment Profit | 41,143 | 35,020 | 83,425 | 74,539
Id Solutions [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Sales to External Customers | 206,432 | 190,962 | 416,137 | 392,226
Segment Profit | 34,088 | 28,961 | 69,925 | 62,035
Workplace Safety [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Sales to External Customers | 81,348 | 77,039 | 161,794 | 155,951
Segment Profit | $ 7,055 | $ 6,059 | $ 13,500 | $ 12,504

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- Definition Aggregate revenue during the period from the sale of goods in the normal course of business, after deducting returns, allowances and discounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1(a)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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