Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Aug. 31, 2015	Aug. 31, 2014
Cash flows from operating activities:
Net income	$ 670	$ 34,994
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization of property and equipment	7,209	7,384
Amortization of intangibles and other	24,420	3,648
Stock-based compensation	18,812	18,194
Asset impairment	3,999	0
Loss on sales of auction rate securities	0	2,554
Deferred income taxes	(23,067)	(390)
Excess tax benefit from stock plans	(1,107)	(434)
Allowances for accounts receivable	356	455
Changes in operating assets and liabilities:
Accounts receivable	11,160	8,325
Other assets	(508)	10,535
Accounts payable and accrued liabilities	(3,378)	(17,049)
Income taxes payable	7,367	2,123
Deferred revenue	31,255	(1,870)
Net cash flows from operating activities	77,188	68,469
Cash flows used in investing activities:
Purchases of investments	(20,068)	(1,900)
Sales and maturities of investments	10,436	14,935
Redemptions and sales of auction rate securities	0	26,196
Purchases of property and equipment	(6,079)	(7,183)
Capitalized software development costs	(1,661)	(3,008)
Payments for acquisitions, net of cash acquired	(246,275)	(12,493)
Proceeds from divestitures, net	4,500	3,300
Decrease in other noncurrent assets	0	144
Net cash flows (used in) from investing activities	(259,147)	19,991
Cash flows from (used in) financing activities:
Proceeds from stock-based compensation plans	10,459	10,714
Purchases of stock related to withholding taxes from the issuance of restricted stock units	(2,850)	(3,141)
Repurchases of common stock	(32,868)	(52,604)
Excess tax benefit from stock plans	1,107	434
Payment of contingent consideration	(209)	(210)
Proceeds from the issuance of debt	150,000	0
Payment of long-term debt	(5,625)	0
Payment of issuance costs for long-term debt	(1,787)	0
Net cash flows from (used in) financing activities	118,227	(44,807)
Effect of exchange rate changes on cash	(10,237)	(91)
Net (decrease) increase in cash and cash equivalents	(73,969)	43,562
Cash and cash equivalents, beginning of period	263,082	198,818
Cash and cash equivalents, end of period	189,113	242,380
Supplemental disclosure:
Cash paid for income taxes, net of refunds of $1,887 in 2015 and $296 in 2014	7,329	6,300
Cash paid for interest	2,150	0
Non-cash financing activities:
Total fair value of restricted stock awards, restricted stock units and deferred stock units on date vested	$ 9,963	$ 10,525