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Note 12 - Reduction of Inventory to Fair Value (Details Textual) $ in Millions | 12 Months Ended
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Oct. 31, 2018 USD ($) | Oct. 31, 2017 USD ($) | Oct. 31, 2016 USD ($)
Number of Communities Evaluated for Impairment | 391 | 372 |
Number of Communities Performed Detailed Impairment Calculations | 5 | 12 |
Carrying Value of Communities Tested for Impairment | $ 11.2 | $ 98.0 |
Impairment of Real Estate | 2.1 | 15.1 | $ 24.5
Land Option Write Offs | 1.4 | 2.7 | 8.9
Homebuilding [Member] |  |  |
Impairment of Real Estate | $ 2.1 | $ 15.1 | $ 24.5
Number of Communities Impaired | 5 | 10 | 20
Number of Communities Tested for Impairment for Which Undiscounted Future Cash Flow Only Exceeded Carrying Amount By Less Than 20 Percent |  | 2 |
Carrying Value of Communities Tested for Impairment for Which Undiscounted Future Cash Flow Only Exceeded Carrying Amount by Less than 20 Percent |  | $ 45.0 |
Percentage Undiscounted Cash Flow Exceeds Carrying Amount |  | 20.00% |
Land Option Write Offs | $ 1.4 | $ 2.7 | $ 8.9
Homebuilding [Member] | Minimum [Member] | Measurement Input, Discount Rate [Member] |  |  |
Inventory, Measurement Input | 0.168 | 0.183 | 0.168
Homebuilding [Member] | Maximum [Member] | Measurement Input, Discount Rate [Member] |  |  |
Inventory, Measurement Input | 0.198 | 0.198 | 0.188

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- Definition The aggregate carrying value of communities for which detailed impairment calculatons were performed. + References No definition available. + Details
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- Definition The aggregate carrying value of communities tested for impairment which had undiscounted future cash flow that only exceeded the carrying amount by less than 20%. + References No definition available. + Details
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- Definition Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. + References No definition available. + Details
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- Definition Represents the number of communities tested for impairment which had undiscounted future cash flow that only exceeded the carrying amount by less than 20%. + References No definition available. + Details
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- Definition Percentage by which undiscounted future cash flow for communities tested for impairment exceeds carrying value under which such carrying amounts are disclosed. + References No definition available. + Details
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- Definition The charge against earnings in the period to reduce the carrying amount of real property to fair value. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109226691&loc=d3e2921-110230 + Details
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