Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Nov. 30, 2011	Nov. 30, 2010
Assets
Cash and equivalents	$ 161,095	$ 286,559
Short-term investments	100,321	35,837
Total cash and short-term investments	261,416	322,396
Accounts receivable (less allowances of $6,683 in 2011 and $4,980 in 2010)	110,927	119,273
Other current assets	21,143	27,910
Deferred tax assets	14,291	14,279
Total current assets	407,777	483,858
Property and equipment, net	66,206	58,207
Intangible assets, net	64,408	83,208
Goodwill	263,239	238,343
Deferred tax assets	24,514	29,214
Investments in auction rate securities	33,539	39,643
Other assets	5,627	4,350
Total assets	865,310	936,823
Liabilities and shareholders' equity
Current portion of long-term debt	357	388
Accounts payable	7,039	13,176
Accrued compensation and related taxes	31,245	44,920
Income taxes payable	11,412	4,083
Other accrued liabilities	35,728	36,148
Short-term deferred revenue	145,727	138,961
Total current liabilities	231,508	237,676
Long-term debt, less current portion		276
Long-term deferred revenue	6,619	2,908
Deferred tax liabilities	1,533	2,378
Other noncurrent liabilities	3,350	5,253
Commitments and contingencies (Note 13)
Shareholders' equity:
Preferred stock, $.01 par value; authorized, 1,000,000 shares; issued, none
Common stock, $.01 par value, and additional paid-in capital; authorized, 200,000,000 shares; issued and outstanding, 61,788,629 in 2011 and 66,528,411 in 2010	309,221	347,604
Retained earnings, including accumulated other comprehensive loss of $13,056 in 2011 and $9,138 in 2010	313,079	340,728
Total shareholders' equity	622,300	688,332
Total liabilities and shareholders' equity	$ 865,310	$ 936,823