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Summary of Significant Accounting Policies (Details Textual) (USD $) | 12 Months Ended
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Nov. 30, 2011 Year | Nov. 30, 2010 | Nov. 30, 2009
Summary of Significant Accounting Policies (Textual) [Abstract] |  |  |
Letter of Credit Facility, collateral amount | $ 64,500,000 | $ 88,700,000 |
Summary of Significant Accounting Policies (Additional Textual) [Abstract] |  |  |
Cash equivalents | 212,800,000 | 797,200,000 |
Restricted cash | 64,481,000 | 115,477,000 |
Estimated useful life for depreciation, Property and Equipment, minimum | 2 |  |
Estimated useful life for depreciation, Property and Equipment, maximum | 10 |  |
Estimated useful life for depreciation, Operating properties | 39 |  |
Property and Equipment, Total | 7,800,000 | 9,600,000 |
Accumulated depreciation | 18,000,000 | 27,100,000 |
Total Depreciation expense | 2,031,000 | 3,289,000 | 5,235,000
Advertising Cost Incurred | 32,400,000 | 25,900,000 | 16,500,000
Company expensed legal fees | 16,900,000 | 33,700,000 | 25,700,000
Line of Credit [Member] |  |  |
Summary of Significant Accounting Policies (Textual) [Abstract] |  |  |
Letter of Credit Facility, collateral amount |  | 88,700,000 |
Surety Bond [Member] |  |  |
Summary of Significant Accounting Policies (Textual) [Abstract] |  |  |
Cash collateral for the surety bonds |  | $ 26,800,000 |

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- Definition The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, but not including land) that has been recognized in the income statement. + 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-Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 5 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 14 -Article 5 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 5 -Subparagraph c -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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