Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Nov. 30, 2015	Nov. 30, 2014	Nov. 30, 2013	Nov. 30, 2012
Operating Loss Carryforwards [Line Items]
Decrease in valuation allowance	$ 1,500	$ 3,300	$ 1,400
Cumulative undistributed foreign earnings	18,400
Unrecognized tax benefits	4,779	1,711	$ 1,022	$ 2,192
Deferred tax assets related to operating loss carryforwards, not recorded	2,200
Accrued estimated interest and penalties	400	$ 200
2030 Expiration [Member]
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	86,500
Indefinite-Lived Carryforwards [Member]
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	1,100
Tax credit carryforwards	2,100
2031 Expiration [Member]
Operating Loss Carryforwards [Line Items]
Tax credit carryforwards	8,400
Other Noncurrent Liabilities [Member]
Operating Loss Carryforwards [Line Items]
Unrecognized tax benefits	$ 2,600