Income Taxes, (As Restated for fiscal 2014 and 2013) - Narrative (Details) - USD ($)	12 Months Ended
	Nov. 30, 2015	Nov. 30, 2014	Nov. 30, 2013
Operating Loss Carryforwards [Line Items]
Effective income tax rate - provision (benefit)	1.80%	49.40%	(555.70%)
Pre-tax losses	$ 16,800,000	$ 33,000,000	$ 35,700,000
Federal statutory tax rate	35.00%	35.00%	35.00%
Deferred tax assets, decrease in valuation allowance			$ 282,400,000
Deferred tax assets, continuing operations			178,700,000
Income tax provision related to land sale			1,100,000
Deferred tax assets, other comprehensive loss			$ 102,600,000
Unrecognized tax benefits, effect in tax rate	$ 5,900,000
Accrued interest and penalties related to uncertain tax positions	700,000
Possible reduction in unrecognized tax benefits and related interest (less than)	4,200,000
Additional reserves	0
Loss carryover in foreign jurisdictions	5,900,000
Research and development credit carryover	8,200,000	$ 13,000,000
State [Member]
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	5,500,000
State [Member] | California
Operating Loss Carryforwards [Line Items]
Research and development credit carryover	$ 100,000