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Summary of Significant Accounting Policies (Narrative) (Details) (USD $) | 12 Months Ended
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Nov. 30, 2014 | Nov. 30, 2013 | Nov. 30, 2012
Accounting Policies [Abstract] |  |  |
Cash equivalents | $ 197,700,000 us-gaap_CashEquivalentsAtCarryingValue | $ 436,200,000 us-gaap_CashEquivalentsAtCarryingValue |
Restricted Cash and Cash Equivalents | 27,235,000 us-gaap_RestrictedCashAndCashEquivalents | 41,906,000 us-gaap_RestrictedCashAndCashEquivalents |
Schedule of Equity Method Investments [Line Items] |  |  |
Property and equipment amount | 11,831,000 us-gaap_PropertyPlantAndEquipmentNet | 8,460,000 us-gaap_PropertyPlantAndEquipmentNet |
Accumulated depreciation | 15,000,000 us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment | 14,400,000 us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment |
Depreciation expense | 2,420,000 us-gaap_DepreciationAndAmortization | 1,857,000 us-gaap_DepreciationAndAmortization | 1,622,000 us-gaap_DepreciationAndAmortization
Advertising costs incurred | 30,200,000 us-gaap_AdvertisingExpense | 25,300,000 us-gaap_AdvertisingExpense | 24,600,000 us-gaap_AdvertisingExpense
Expensed legal fees | $ 10,900,000 us-gaap_LegalFees | $ 10,100,000 us-gaap_LegalFees | $ 12,600,000 us-gaap_LegalFees
Minimum |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Estimated useful life for depreciation of property and equipment | 2 years |  |
Maximum |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Estimated useful life for depreciation of property and equipment | 10 years |  |

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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 Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 720 -SubTopic 35 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6420018&loc=d3e36677-107848 + Details
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- Definition Amount of short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash Equivalents -URI http://asc.fasb.org/extlink&oid=6507016 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 1 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -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 210.5-02.13) -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 13 -Subparagraph a -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 8 -Article 7 + Details
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