Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Feb. 29, 2012	Nov. 30, 2011
Assets
Cash and cash equivalents	$ 231,695	$ 161,095
Short-term investments	83,469	100,321
Total cash, cash equivalents and short-term investments	315,164	261,416
Accounts receivable (less allowances of $2,879 in 2012 and $6,683 in 2011)	102,645	110,927
Other current assets	22,845	21,143
Deferred tax assets	11,062	14,291
Total current assets	451,716	407,777
Property and equipment, net	68,048	66,206
Intangible assets, net	58,882	64,408
Goodwill	263,283	263,239
Deferred tax assets	27,609	24,514
Investments in auction rate securities	33,343	33,539
Other assets	5,999	5,627
Total assets	908,880	865,310
Liabilities and shareholders' equity
Current portion of long-term debt	174	357
Accounts payable	6,268	7,039
Accrued compensation and related taxes	29,878	31,245
Income taxes payable	7,983	11,412
Other accrued liabilities	39,230	35,728
Short-term deferred revenue	162,552	145,727
Total current liabilities	246,085	231,508
Long-term deferred revenue	5,069	6,619
Deferred tax liabilities	1,581	1,533
Other noncurrent liabilities	2,715	3,350
Commitments and contingencies (Note 8)
Shareholders' equity:
Preferred stock, $0.01 par value; authorized, 1,000,000 shares; issued, none Common stock, $0.01 par value, and additional paid-in capital; authorized, 200,000,000 shares; issued and outstanding, 62,702,462 shares in 2012 and 61,788,629 shares in 2011	329,405	309,221
Retained earnings, including accumulated other comprehensive loss of $9,600 in 2012 and $13,056 in 2011	324,025	313,079
Total shareholders' equity	653,430	622,300
Total liabilities and shareholders' equity	$ 908,880	$ 865,310