Summary of Significant Accounting Policies (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Nov. 30, 2014	Nov. 30, 2015	Nov. 30, 2014	Nov. 30, 2013
Accounting Policies [Abstract]
Cash equivalents	$ 197,700	$ 342,300	$ 197,700
Restricted Cash and Cash Equivalents	27,235	9,344	27,235
Schedule of Equity Method Investments [Line Items]
Impairment of Real Estate	34,200	8,030	37,628	$ 391
Property and equipment amount	11,831	13,100	11,831
Accumulated depreciation	$ 15,000	15,300	15,000
Depreciation expense		3,411	2,420	1,857
Advertising costs incurred		33,400	30,200	25,300
Expensed legal fees		$ 11,700	10,900	$ 10,100
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
Land [Member]
Schedule of Equity Method Investments [Line Items]
Impairment of Real Estate		$ 0	$ 26,600

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Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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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.

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