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Income Taxes (Details 2) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Nov. 30, 2013 | Nov. 30, 2012 | Nov. 30, 2011
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 | $ (13,427) | $ 27,672 | $ 63,397
Increase (decrease) resulting from |  |  |
State taxes, net of federal income tax benefit | (1,947) | 9,948 | 4,691
Effective Income Tax Rate Reconciliation, Tax Contingency, Other, Amount | 1,808 | 9,146 | 1,161
Capitalized expenses | 0 | 7,960 | (3,501)
Effective Income Tax Rate Reconciliation, Equity in Earnings (Losses) of Unconsolidated Subsidiary, Amount | 9,598 | (42,503) | (4,401)
NOLs reconciliation | (3,806) | (5,345) | 715
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Impairment Losses, Amount | 2,827 | (59,401) | (1,852)
Recognition of federal tax benefits | 1,600 | 17,650 | 2,600
Tax credits | 2,675 | 17,889 | 5,477
Valuation allowance for deferred tax assets | 20,673 | (32,286) | (76,747)
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Depreciation, Amount | 4,523 | 2,482 | 0
Other, net | (112) | 174 | 4,380
Income tax benefit | 1,600 | 20,100 | 2,400
Reconciliation of the beginning and ending balances of the gross unrecognized benefits |  |  |
Balance at beginning of year | 1,671 | 1,899 | 11,308
Additions for tax positions related to prior years | 0 | 0 | 5
Reductions for tax positions related to prior years | 0 | (165) | 0
Reductions due to lapse of statute of limitations | (1,465) | (63) | (2,476)
Reductions due to resolution of federal and state audits | 0 | 0 | (6,938)
Balance at the end of year | $ 206 | $ 1,671 | $ 1,899

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