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Segment Information - Schedule of Revenues and Long-Lived Assets by Geographic Location (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jul. 31, 2014 | Apr. 30, 2014 | Jan. 31, 2014 | Oct. 31, 2013 | Jul. 31, 2013 | Apr. 30, 2013 | Jan. 31, 2013 | Oct. 31, 2012 | Jul. 31, 2014 | Jul. 31, 2013 | Jul. 31, 2012
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Disclosure on Geographic Areas, Long-Lived Assets in Entity's Country of Domicile | $ 740,189 |  |  |  | $ 896,245 |  |  |  | $ 740,189 | $ 896,245 | $ 890,925
Net sales | 316,733 | 309,577 | 291,194 | 307,530 | 310,592 | 302,483 | 272,702 | 272,015 | 1,225,034 | 1,157,792 | 1,071,504
UNITED STATES |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Disclosure on Geographic Areas, Revenue from External Customers Attributed to Entity's Country of Domicile |  |  |  |  |  |  |  |  | 675,771 | 615,861 | 522,393
Disclosure on Geographic Areas, Long-Lived Assets in Entity's Country of Domicile | 425,733 |  |  |  | 576,539 |  |  |  | 425,733 | 576,539 | 479,791
OtherCountries [Member] |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Disclosure on Geographic Areas, Revenue from External Customers Attributed to Entity's Country of Domicile |  |  |  |  |  |  |  |  | 615,974 | 602,582 | 611,899
Disclosure on Geographic Areas, Long-Lived Assets in Entity's Country of Domicile | 314,456 |  |  |  | 319,706 |  |  |  | 314,456 | 319,706 | 411,134
Intersegment Elimination [Member] |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Disclosure on Geographic Areas, Revenue from External Customers Attributed to Entity's Country of Domicile |  |  |  |  |  |  |  |  | (66,711) | (60,651) | (62,788)
Disclosure on Geographic Areas, Long-Lived Assets in Entity's Country of Domicile | $ 0 |  |  |  | $ 0 |  |  |  | $ 0 | $ 0 | $ 0

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- Definition Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9038-108599 + Details
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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). + 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) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 + Details
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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=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 + Details
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