Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Nov. 30, 2015	Nov. 30, 2014
Income Taxes [Line Items]
Deferred tax assets, valuation allowance	$ 5,945	$ 8,029
Reversal of deferred tax asset, valuation allowance	2,084	4,677
Net operating loss carryforwards	122,573	115,850
Deferred tax assets, operating loss carryforwards, state and local	120,671	113,844
Unrecognized tax benefits that would impact effective tax rate if recognized	7,985
Federal Net Operating Loss Carryforwards [Member]
Income Taxes [Line Items]
Net operating loss carryforwards	$ 1,902	$ 2,007
Net operating loss carryforward, term	20 years
State Net Operating Loss Carryforwards Low End Range [Member]
Income Taxes [Line Items]
Net operating loss carryforward, term	5 years
State Net Operating Loss Carryforwards High End Range [Member]
Income Taxes [Line Items]
Net operating loss carryforward, term	20 years