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