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Basis of Presentation and Significant Accounting Policies (Narrative) (Details) (USD $) | 12 Months Ended |  |  | 0 Months Ended
--- | --- | --- | --- | ---
Nov. 30, 2013 Rate | Nov. 30, 2012 Rate | Nov. 30, 2011 Rate | Nov. 30, 2013 Minimum | Nov. 30, 2013 Maximum | Jun. 30, 2011 KBA Mortgage | Jan. 29, 2013 Convertible senior notes due February 1, 2019 at 1.375% | Jan. 29, 2013 Convertible senior notes due February 1, 2019 at 1.375% Convertible Notes Payable [Member]
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax | $ (17,516,000) | $ (27,958,000) |  |  |  |  |  |
Defined Benefit Plan, Amortization of Gains (Losses) | (1,800,000) | 1,400,000 | 600,000 |  |  |  |  |
Defined Benefit Plan, Amortization of Prior Service Cost (Credit) | 1,500,000 | 1,600,000 | 1,500,000 |  |  |  |  |
Other comprehensive loss before reclassifications | 7,083,000 | (4,765,000) | (5,646,000) |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  |  | 230,000,000
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  | 1.375% |
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount | 5,200,000 |  |  |  |  |  |  |
Other Comprehensive Income (Loss), Net of Tax | 10,442,000 | (1,806,000) | (3,495,000) |  |  |  |  |
Debt Conversion, Converted Instrument, Shares Issued |  |  |  |  |  |  |  | 36.5297
Cash equivalents | 436,200,000 | 396,300,000 |  |  |  |  |  |
Restricted Cash and Cash Equivalents | 41,906,000 | 42,362,000 |  |  |  |  |  |
Homebuilding Closing Costs Allowances | 10,600,000 | 14,500,000 | 27,100,000 |  |  |  |  |
Homebuilding Closing Costs Allowances as a Percentage of Housing Revenues | 0.50% | 0.90% | 2.10% |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |
Ownership interest in joint venture |  |  |  |  |  | 50.00% |  |
Estimated useful life for depreciation of property and equipment |  |  |  | 2 years | 10 years |  |  |
Property and equipment amount | 8,460,000 | 7,920,000 |  |  |  |  |  |
Accumulated depreciation | 14,400,000 | 18,500,000 |  |  |  |  |  |
Depreciation expense | 1,857,000 | 1,622,000 | 2,031,000 |  |  |  |  |
Advertising costs incurred | 25,300,000 | 24,600,000 | 32,400,000 |  |  |  |  |
Expensed legal fees | $ 10,100,000 | $ 12,600,000 | $ 16,900,000 |  |  |  |  |

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- Definition Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.14) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 14 -Article 5 + Details
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- Definition Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=28358780&loc=SL7669686-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=28358780&loc=d3e637-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=28358780&loc=d3e681-108580 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 31 -Article 5 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 + Details
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