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Income Taxes (Details 2) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Nov. 30, 2017 | Nov. 30, 2017 | Nov. 30, 2017 | Nov. 30, 2016 | Nov. 30, 2015
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 | $ (101,499) |  |  | $ (52,260) | $ (44,462)
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent |  | (35.00%) |  | (35.00%) | (35.00%)
Increase (decrease) resulting from |  |  |  |  |
Valuation allowance for deferred tax assets | 1,200 |  |  | $ 12,982 | $ 3,356
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent |  | 0.40% |  | 8.70% | 2.60%
Tax credits | 6,227 |  |  | $ 4,447 | $ 6,926
Effective Income Tax Rate Reconciliation, Tax Credit, Percent |  | 2.20% |  | 3.00% | 5.50%
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Depreciation and Amortization, Amount | 362 |  |  | $ 1,842 | $ 3,183
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Depreciation, Percent |  | 0.10% |  | 1.20% | 2.50%
Effective Income Tax Rate Reconciliation, Equity in Earnings (Losses) of Unconsolidated Subsidiary, Amount | 74 |  |  | $ (86) | $ 1,617
Effective Income Tax Rate Reconciliation, Equity in Earnings (Losses) of Unconsolidated Subsidiary, Percent |  | 0.00% |  | (0.10%) | 1.30%
NOLs reconciliation | (2,210) |  |  | $ (3,691) | $ (3,379)
Effective Income Tax Reconciliation Change Net Operating Loss, Percentage |  | (0.80%) |  | (2.50%) | (2.70%)
State taxes, net of federal income tax benefit | (14,450) |  |  | $ (7,511) | $ (5,155)
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent |  | (4.90%) |  | (5.00%) | (4.10%)
Other, net | 896 |  |  | $ 577 | $ (4,486)
Effective Income Tax Rate Reconciliation, Other Adjustments, Percent |  | 0.30% |  | 0.40% | (3.50%)
Income tax benefit | (109,400) |  |  | $ (43,700) | $ (42,400)
Effective Income Tax Rate Reconciliation, Percent |  | (37.70%) | (35.00%) | (29.30%) | (33.40%)
Reconciliation of the beginning and ending balances of the gross unrecognized benefits |  |  |  |  |
Balance at beginning of year | 56 |  |  | $ 56 | $ 206
Reductions due to lapse of statute of limitations | 0 |  |  | 0 | (150)
Balance at the end of year | $ 56 |  |  | $ 56 | $ 56

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