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Property, Plant and Equipment - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Oct. 31, 2013 | Apr. 30, 2014 | Jul. 31, 2014 Scenario Forecast | Jul. 31, 2014 Scenario Forecast Land | Jul. 31, 2014 Scenario Forecast Building and Building Improvements
Property, Plant and Equipment [Line Items] |  |  |  |  |
Assets Held-for-sale, property, plant and equipment |  |  | $ 5,465 | $ 2,312 | $ 3,153
Non-cash impairment charge | $ 710 | $ 710 |  |  |

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- Definition Property, plant and equipment that is held for sale apart from normal operations and anticipated to be sold in less than one year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=6892542&loc=d3e1107-107759 + Details
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- Definition The aggregate amount of write-downs for impairments recognized during the period for long-lived assets held for abandonment, exchange or sale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=8077374&loc=d3e2611-110228 + Details
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