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General (Details) (USD $) | 1 Months Ended | 3 Months Ended | 6 Months Ended
--- | --- | --- | ---
Jan. 31, 2013 | Apr. 30, 2014 | Apr. 30, 2013 | Jan. 31, 2013 | Oct. 31, 2012 | Apr. 30, 2014 | Apr. 30, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |  |  |  |  |  |
Insurance proceeds | $ 19,100,000 | $ 0 | $ 0 | $ 14,100,000 |  | $ 0 | $ 14,084,000
Proceeds from Insurance Settlement, Operating Activities |  |  | $ 11,200,000 | $ 2,900,000 | $ 5,000,000 |  |

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- Definition The cash inflow from the amounts received by the insured under the terms of an insurance contract settlement. This element pertains only to insurance proceeds related to operating activities. It excludes insurance settlements classified as investing cash flows, for example, insurance settlements related to fixed assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 16 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3337-108585 + Details
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- Definition The gross income statement effect of insurance proceeds for each material event or transaction (that would not reasonably be expected to recur in the foreseeable future) that possesses a high degree of abnormality and are clearly unrelated to, or incidentally related to, the ordinary and typical activities of the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 20 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6365513&loc=d3e15138-107781 + Details
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