Accrued Expenses Accrued Expenses (Detail Textuals) - Jul. 31, 2015 $ in Millions	USD ($)	USD ($) communities
Stucco Related [Member]
Loss Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss	$ 54.0	$ 54.0
Product Liability Contingency, Third Party Recovery, Percentage		40.00%
Product Warranty Accrual, Preexisting, Increase (Decrease)		$ 25.0
Construction Claims, Three Community Associations, West Region [Member]
Loss Contingencies [Line Items]
Number Of Communities Filing Claim \| communities		3
Loss Contingency, Loss in Period	$ 5.8

Number of communities filing claim in related community associations in the west region.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Reflects the estimated amount of loss from the specified contingency as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

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- Definition

The amount of loss pertaining to the specified contingency that was charged against earnings in the period, including the effects of revisions in previously reported estimates.

+ References

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Percentage of the estimated recovery from third parties recorded in the period pertaining to product liability damages from specified products.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

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-Name Staff Accounting Bulletin (SAB)

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Represents the aggregate Increase or Decrease in the liability during the reporting period for accruals related to preexisting standard and extended product warranties (including adjustments for changes in estimates).

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