Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Aug. 31, 2016	Aug. 31, 2015
Cash flows from operating activities:
Net income	$ 18,067	$ 670
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization of property and equipment	6,480	7,209
Amortization of intangibles and other	23,316	24,420
Stock-based compensation	19,009	18,812
Loss on disposal of property	364	0
Asset impairment	5,051	3,999
Deferred income taxes	(996)	(23,067)
Excess tax benefit from stock plans	(305)	(1,107)
Allowances for accounts receivable	(334)	356
Changes in operating assets and liabilities:
Accounts receivable	11,209	11,160
Other assets	(3,866)	(508)
Accounts payable and accrued liabilities	(14,920)	(3,378)
Income taxes payable	2,025	7,367
Deferred revenue	3,810	31,255
Net cash flows from operating activities	68,910	77,188
Cash flows used in investing activities:
Purchases of investments	(33,861)	(20,068)
Sales and maturities of investments	17,275	10,436
Purchases of property and equipment	(3,747)	(6,079)
Capitalized software development costs	0	(1,661)
Payments for acquisitions, net of cash acquired	0	(246,275)
Proceeds from divestitures, net	0	4,500
Net cash flows used in investing activities	(20,333)	(259,147)
Cash flows (used in) from financing activities:
Proceeds from stock-based compensation plans	8,166	10,459
Purchases of stock related to withholding taxes from the issuance of restricted stock units	(2,751)	(2,850)
Repurchases of common stock	(71,507)	(32,868)
Excess tax benefit from stock plans	305	1,107
Payment of contingent consideration	0	(209)
Proceeds from the issuance of debt	0	150,000
Payment of long-term debt	(7,500)	(5,625)
Payment of issuance costs for long-term debt	0	(1,787)
Net cash flows (used in) from financing activities	(73,287)	118,227
Effect of exchange rate changes on cash	415	(10,237)
Net decrease in cash and cash equivalents	(24,295)	(73,969)
Cash and cash equivalents, beginning of period	212,379	263,082
Cash and cash equivalents, end of period	188,084	189,113
Supplemental disclosure:
Cash paid for income taxes, net of refunds of $781 in 2016 and $1,887 in 2015	11,918	7,329
Cash paid for interest	2,348	2,150
Non-cash financing activities:
Total fair value of restricted stock awards, restricted stock units and deferred stock units on date vested	$ 12,137	$ 9,963