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Inventory Impairments and Land Option Contract Abandonments (Details Textual) (USD $) | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
May 31, 2012 Property | May 31, 2011 Lots Property | May 31, 2012 Property | May 31, 2011 Lots Property | Nov. 30, 2011 Property
Inventory Impairments and Land Option Contract Abandonments (Textual) [Abstract] |  |  |  |  |
Number of land parcels or communities evaluated for recoverability | 39 | 33 | 76 | 64 |
Pretax, noncash inventory impairment charges | $ 9,937,000 | $ 20,094,000 | $ 16,509,000 | $ 21,086,000 | $ 22,700,000
Post impairment fair value | 15,200,000 | 27,600,000 | 27,400,000 | 28,800,000 |
Charges related to adjustment to fair value of real estate |  | 18,100,000 |  |  |
Number of land parcels or communities associated with non cash inventory impairment charges | 5 | 5 | 7 | 8 |
Land option contract abandonment charges |  | 497,000 |  | 1,259,000 |
Number of lots on which abandonment charges are recognized |  | 117 |  | 258 |
Aggregate carrying value of inventory impacted by pretax, noncash inventory impairment charges | $ 351,200,000 |  | $ 351,200,000 |  | $ 338,500,000
Number of communities and various other land parcels impacted by pretax, noncash inventory impairment charges | 50 |  | 50 |  | 53
Remaining useful life in addition to specified useful lives |  |  | 1 year |  |
Specified period of remaining useful lives |  |  | 10 years |  |
Expected realization period of inventory maximum |  |  | 5 years |  |

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- Definition Charge to cost of goods sold that represents the reduction of the carrying amount of inventory, generally attributable to obsolescence or market conditions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.2) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6386783&loc=d3e4542-108314 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 43 -Chapter 4 -Section 7 -Paragraph 14 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Concepts (CON) -Number 6 -Paragraph 86 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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