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Income Taxes (Reconciliation of Expected Income Tax Expense) (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Nov. 30, 2019 | Nov. 30, 2018 | Nov. 30, 2019 | Nov. 30, 2018 | Nov. 30, 2018 | Nov. 30, 2018 | Nov. 30, 2017 | Nov. 30, 2016
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 |  |  | $ (73,117) | $ (81,689) |  |  | $ (101,499) |
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent |  |  | (21.00%) |  | (22.20%) | (22.00%) | (35.00%) |
Increase (decrease) resulting from |  |  |  |  |  |  |  |
Tax credits |  |  | $ 6,595 | 14,177 |  |  | $ 6,227 |
Effective Income Tax Rate Reconciliation, Tax Credit, Percent |  |  | 1.90% |  | 3.90% |  | 2.20% |
Valuation allowance for deferred tax assets |  |  | $ 4,400 | 2,000 |  |  | $ 1,200 |
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent |  |  | 1.30% |  | 0.50% |  | 0.40% |
Depreciation and amortization |  |  | $ 4,276 | 1,223 |  |  | $ 362 |
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Depreciation, Percent |  |  | 1.20% |  | 0.30% |  | 0.10% |
NOL reconciliation |  |  | $ 3,111 | 0 |  |  | $ (2,210) |
Effective Income Tax Reconciliation Change Net Operating Loss, Percentage |  |  | 0.90% |  | 0.00% |  | (0.80%) |
State taxes, net of federal income tax benefit |  |  | $ (20,927) | (20,155) |  |  | $ (14,450) |
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent |  |  | (6.00%) |  | (5.50%) |  | (4.90%) |
Effective Income Tax Rate Reconciliation, Deduction, Other, Amount |  |  | $ (4,653) |  |  |  | $ 0 | $ 0
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Other, Percent |  |  | (1.30%) |  |  |  | 0.00% | 0.00%
TCJA adjustment | $ 1,300 | $ 1,300 | $ 0 | 112,458 |  |  | $ 0 |
Effective Income Tax Rate Reconciliation, Tax Cuts and Jobs Act, Percent |  |  | 0 |  | (0.305) |  | 0 |
Other, net |  |  | $ 915 | (698) |  |  | $ 970 |
Effective Income Tax Rate Reconciliation, Other Adjustments, Percent |  |  | 0.20% |  | (0.20%) |  | 0.30% |
Income tax expense |  |  | $ (79,400) | (197,600) |  |  | $ (109,400) |
Effective Income Tax Rate Reconciliation, Percent |  |  | (22.80%) |  | (53.70%) |  | (37.70%) |
Reconciliation of the beginning and ending balances of the gross unrecognized benefits |  |  |  |  |  |  |  |
Balance at beginning of year |  |  | $ 0 | 56 |  |  | $ 56 |
Reductions due to lapse of statute of limitations |  |  | 0 | (56) |  |  | 0 |
Balance at the end of year | $ 0 | $ 0 | $ 0 | $ 0 |  |  | $ 56 | $ 56

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