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Income Taxes (Reconciliation of Expected Income Tax Expense) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Nov. 30, 2021 | Nov. 30, 2020 | Nov. 30, 2019
Increase (decrease) resulting from |  |  |
Income tax expense computed at statutory rate | $ (146,023) | $ (76,449) | $ (73,117)
Income tax benefit computed at statutory rate (percent) | (21.00%) | (21.00%) | (21.00%)
Tax credits | $ 49,522 | $ 18,734 | $ 6,595
Tax credits (percent) | 7.10% | 5.10% | 1.90%
Depreciation and amortization | $ 5,872 | $ 9,910 | $ 4,276
Depreciation and amortization (Percent) | 0.80% | 2.70% | 1.20%
Valuation allowance for deferred tax assets | $ 600 | $ 1,200 | $ 4,400
Valuation allowance for deferred tax assets (percent) | 0.10% | 0.30% | 1.30%
Non-deductible compensation | $ (9,241) | $ (4,812) | $ (4,653)
Non-deductible compensation (percent) | (1.30%) | (1.30%) | (1.30%)
State taxes, net of federal income tax benefit | $ (31,378) | $ (16,395) | $ (20,927)
State taxes, net of federal income tax benefit (percent) | (4.50%) | (4.40%) | (6.00%)
NOL reconciliation | $ 0 | $ 0 | $ 3,111
NOL reconciliation (percent) | 0.00% | 0.00% | 0.90%
Other, net | $ 48 | $ 12 | $ 915
Other, net (percent) | 0.00% | 0.00% | 0.20%
Income tax expense | $ (130,600) | $ (67,800) | $ (79,400)
Income tax expense (percent) | (18.80%) | (18.60%) | (22.80%)

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