Financial Services (Schedule of Income (Loss)) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Feb. 28, 2015	Feb. 28, 2014
Revenues
Insurance commissions	$ 1,434us-gaap_InsuranceCommissionsAndFees	$ 1,262us-gaap_InsuranceCommissionsAndFees
Title services	799kbh_TitleServices	708kbh_TitleServices
Marketing services fees	0us-gaap_RevenueOtherFinancialServices	450us-gaap_RevenueOtherFinancialServices
Total	2,233us-gaap_FinancialServicesRevenue	2,420us-gaap_FinancialServicesRevenue
Expenses
General and administrative	(964)us-gaap_FinancialServicesCosts	(852)us-gaap_FinancialServicesCosts
Operating income	14,398us-gaap_OperatingIncomeLoss	17,719us-gaap_OperatingIncomeLoss
Equity in income (loss) of unconsolidated joint ventures	67	2,584
Total pretax income (loss)	10,499	10,763
Financial services [Member]
Expenses
Operating income	1,269	1,568
Equity in income (loss) of unconsolidated joint ventures	414	(6)
Total pretax income (loss)	$ 1,683	$ 1,562

Title services.

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- Definition

The aggregate costs incurred during the reporting period related to financial services rendered by an entity.

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- Definition

The aggregate financial services revenue and operating interest income earned during the reporting period.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1(d))

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-Name Regulation S-X (SX)

-Number 210

-Section 03

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- Definition

The portion of earnings or loss from continuing operations before income taxes that is attributable to domestic operations.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(h)(1)(i))

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- Definition

This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

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-Name Accounting Standards Codification

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-Name Regulation S-X (SX)

-Number 210

-Section 04

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- Definition

Income from agency and brokerage operations (includes sales of annuities and supplemental contracts); service charges, commissions, and fees from the sale of insurance and related services; and management fees from separate accounts, deferred annuities, and universal life products.

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-Publisher FASB

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-Section S99

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-Subparagraph (SX 210.7-04.4)

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The net result for the period of deducting operating expenses from operating revenues.

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No definition available.

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Fees and other service revenues recognized in the period that are not otherwise specified in the taxonomy.

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