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Note 12 - Reduction of Inventory to Fair Value (Details Textual) $ in Millions	12 Months Ended
	Oct. 31, 2020 USD ($)	Oct. 31, 2019 USD ($)	Oct. 31, 2018 USD ($)
Number of Communities Evaluated for Impairment	354	393
Number of Communities Performed Detailed Impairment Calculations	3	9
Carrying Value of Communities Tested for Impairment	$ 5.4	$ 58.9
Impairment of Real Estate	2.0	2.7	$ 2.1
Land Option Write Offs	$ 6.8	$ 3.6	$ 1.4
Homebuilding [Member]
Number of Communities Impaired	2	6	5
Impairment of Real Estate	$ 2.0	$ 2.7	$ 2.1
Number of Communities Tested for Impairment for Which Undiscounted Future Cash Flow that Did Not Exceed Carrying Amount By Less Than 20 Percent	1
Carrying Value of Communities Tested for Impairment for Which Undiscounted Future Cash Flow Did Not Exceed Carrying Amount by Less than 20 Percent	$ 0.6
Percentage Undiscounted Cash Flow Exceeds Carrying Amount	20.00%	20.00%
Number of Communities Tested for Impairment for Which Undiscounted Future Cash Flow Only Exceeded Carrying Amount By Less Than 20 Percent		3
Carrying Value of Communities Tested for Impairment for Which Undiscounted Future Cash Flow Only Exceeded Carrying Amount by Less than 20 Percent		$ 41.3
Land Option Write Offs	$ 6.8	$ 3.6	$ 1.4
Homebuilding [Member] | Measurement Input, Discount Rate [Member]
Inventory, Measurement Input	17.3
Homebuilding [Member] | Measurement Input, Discount Rate [Member] | Minimum [Member]
Inventory, Measurement Input		17.3	16.8
Homebuilding [Member] | Measurement Input, Discount Rate [Member] | Maximum [Member]
Inventory, Measurement Input		18.3	19.8

X

- Definition

The aggregate carrying value of communities for which detailed impairment calculatons were performed.

+ References

No definition available.

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- Definition

The aggregate carrying value of communities tested for impairment which had undiscounted future cash flow that did not exceed the carrying amount by less than 20%.

+ References

No definition available.

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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

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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.

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- Definition

The charge against earnings in the period to write off costs associated with land options that were terminated.

+ References

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- Definition

Number of communities evaluated for impairment during the period

+ References

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- Definition

Represents the number of communities with impairment losses.

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- Definition

Number of communities for which detailed impairment calculations were performed during the period.

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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

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The number of communities tested for impairment which had undiscounted future cash flow that did not exceed the carrying amount by less than 20%.

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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.

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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=121586364&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

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