Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Nov. 30, 2015	Nov. 30, 2014	Nov. 30, 2013
Cash flows from operating activities:
Net (loss) income	$ (8,801)	$ 49,458	$ 74,907
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Depreciation and amortization of property and equipment	9,394	9,775	10,345
Amortization of acquired intangibles and other	32,286	5,521	4,090
Stock-based compensation	24,004	24,873	21,399
Changes in fair value of contingent consideration obligation	(1,508)	89	9
Gain on sale of dispositions	0	0	(71,601)
Loss on sale of auction rate securities	0	2,554	380
Loss on disposal of property and equipment	41	60	448
Asset impairment	4,962	0	111
Deferred income taxes	(1,845)	15,034	9,261
Excess tax benefits from stock plans	(1,349)	(701)	(1,642)
Allowances for bad debt and sales credits	453	416	874
Changes in operating assets and liabilities:
Accounts receivable	3,747	(703)	5,672
Other assets	5,428	8,222	(9,035)
Accounts payable and accrued liabilities	(370)	(8,749)	(15,161)
Income taxes payable	2,481	710	(20,294)
Deferred revenue	35,617	1,135	(5,183)
Net cash flows from operating activities	104,540	107,694	4,580
Cash flows from investing activities:
Purchases of investments	(24,178)	(5,537)	(7,745)
Sales and maturities of investments	14,626	17,125	28,753
Redemptions and sales of auction rate securities - available-for-sale	0	26,196	25
Purchases of property and equipment	(7,184)	(7,985)	(4,226)
Capitalized software development costs	(1,661)	(3,816)	(836)
Payments for acquisitions, net of cash acquired	(246,275)	(24,493)	(9,450)
Proceeds from divestitures, net	4,500	3,300	111,120
Decrease in other noncurrent assets	(36)	346	1,121
Net cash flows (used in) from investing activities	(260,208)	5,136	118,762
Cash flows from financing activities:
Proceeds from stock-based compensation plans	13,069	16,488	54,430
Purchase of common stock related to withholding taxes from issuance of restricted stock units	(5,631)	(6,607)	(4,936)
Repurchase of common stock	(32,868)	(52,604)	(276,537)
Excess tax benefit from stock plans	1,349	701	1,642
Proceeds from the issuance of debt	150,000	0	0
Payment of long-term debt	(5,625)	0	0
Payment of contingent consideration	(1,785)	0	0
Payment of contingent consideration	209	210	0
Net cash flows from (used in) financing activities	118,300	(42,232)	(225,401)
Effect of exchange rate changes on cash	(13,335)	(6,334)	(915)
Net (decrease) increase in cash and equivalents	(50,703)	64,264	(102,974)
Cash and equivalents, beginning of year	263,082	198,818	301,792
Cash and equivalents, end of year	212,379	263,082	198,818
Supplemental disclosure:
Cash paid for income taxes, net of refunds of $2,264 in 2015, $1,769 in 2014, and $4,453 in 2013	17,036	7,343	69,939
Cash paid for interest	2,725	0	0
Non-cash financing activity:
Total fair value of restricted stock awards, restricted stock units and deferred stock units on date vested	$ 18,714	$ 20,093	$ 16,758