Income Taxes (Summary Of Deferred Taxes) (Details) - USD ($) $ in Thousands	Nov. 30, 2015	Nov. 30, 2014
Deferred tax assets:
Accounts receivable	$ 628	$ 632
Other assets	761	762
Accrued compensation	3,421	2,666
Accrued liabilities and other	4,945	7,096
Stock-based compensation	4,902	4,558
Deferred revenue	798	0
Tax credit and loss carryforwards	29,351	30,769
Gross deferred tax assets	44,806	46,483
Valuation allowance	(8,160)	(9,687)
Total deferred tax assets	36,646	36,796
Deferred tax liabilities:
Goodwill	(21,580)	(19,777)
Deferred revenue	0	(672)
Depreciation and amortization	(11,207)	(4,327)
Total deferred tax liabilities	(32,787)	(24,776)
Total	$ 3,859	$ 12,020