Income Taxes (Reconciliation Of Statutory Rate And Effective Tax Rate) (Details)	12 Months Ended
Nov. 30, 2015	Nov. 30, 2014	Nov. 30, 2013
Income Tax Disclosure [Abstract]
Statutory rate	35.00%	35.00%	35.00%
State income taxes, net of federal income tax benefit	3.22%	3.17%	3.16%
Domestic production activities deduction	(3.01%)	(2.81%)	0.00%
Tax reserves and interest expense	2.64%	0.59%	0.56%
Deferred tax asset valuation reversal	(0.09%)	(0.28%)	(10.22%)
Effective Income Tax Rate Reconciliation net operating loss adjustment	(3.00%)	0.00%	0.00%
Tax credits	1.92%	0.41%	0.45%
Other	(0.12%)	(0.46%)	(1.09%)
Effective rate	32.72%	34.80%	26.96%

Effective Income Tax Rate Reconciliation net operating loss adjustment

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Effective income tax reconciliation reversal of tax reserves and interest expense

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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-Publisher FASB
-Name Accounting Standards Codification
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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the valuation allowance for deferred tax assets.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to state and local income tax expense (benefit), net of federal tax expense (benefit).

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to tax credits. Including, but not limited to, research credit, foreign tax credit, investment tax credit, and other tax credits.

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