Income Taxes (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Nov. 30, 2014	Nov. 30, 2014	Nov. 30, 2013	Nov. 30, 2012
Income Tax Disclosure [Abstract]
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Impairment Losses, Percent		0.00%	7.40%	(75.10%)
Income tax benefit computed at the statutory U.S. federal income tax rate and income tax benefit (expense) provided in the consolidated statements of operations
Income tax benefit computed at statutory rate		$ (33,232)	$ (13,427)	$ 27,672
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent		(35.00%)	(35.00%)	35.00%
Increase (decrease) resulting from
State taxes, net of federal income tax benefit		(13,907)	(1,947)	9,948
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent		(14.70%)	(5.10%)	12.60%
Effective Income Tax Rate Reconciliation, Tax Contingency, Other, Amount		0	(1,808)	(9,146)
Effective Income Tax Rate Reconciliation, Deduction, Other, Percent		0.00%	(4.70%)	(11.60%)
Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount		1,249	0	7,960
Effective Income Tax Rate Reconciliation, Other Adjustments, Percent		1.30%	0.00%	10.10%
Effective Income Tax Rate Reconciliation, Equity in Earnings (Losses) of Unconsolidated Subsidiary, Amount		10,441	(9,598)	42,503
Effective Income Tax Rate Reconciliation, Equity in Earnings (Losses) of Unconsolidated Subsidiary, Percent		11.00%	(25.00%)	53.80%
NOLs reconciliation		12,973	(3,806)	(5,345)
Effective Income Tax Reconciliation Change Net Operating Loss, Percentage		13.70%	(9.90%)	(6.80%)
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Impairment Losses, Amount		0	2,827	(59,401)
Recognition of federal tax benefits		59	1,600	17,650
Effective Income tax Reconciliation Recognition of Federal Tax Benefits, Percent		0.10%	4.20%	22.30%
Tax credits		2,884	2,675	17,889
Effective Income Tax Rate Reconciliation, Tax Credit, Percent		3.00%	7.00%	22.60%
Valuation allowance for deferred tax assets		825,232	20,673	(32,286)
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent		869.10%	53.90%	(40.80%)
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Depreciation, Percent		16.60%	11.80%	3.10%
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Depreciation and Amortization, Amount		15,765	4,523	2,482
Other, net		1,936	(112)	174
Effective Income Tax Rate Reconciliation, Other Adjustments, Percent		2.10%	(0.30%)	0.20%
Income tax benefit	824,200	823,400	1,600	20,100
Effective Income Tax Rate Reconciliation, Percent		867.20%	4.30%	25.40%
Reconciliation of the beginning and ending balances of the gross unrecognized benefits
Balance at beginning of year		206	1,671	1,899
Reductions for tax positions related to prior years		0	0	(165)
Reductions due to lapse of statute of limitations		0	(1,465)	(63)
Balance at the end of year	$ 206	$ 206	$ 206	$ 1,671