Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	May 31, 2017	May 31, 2016
Cash flows from operating activities:
Net income	$ 9,816	$ 10,491
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization of property and equipment	3,962	4,382
Amortization of intangibles and other	15,886	15,527
Stock-based compensation	5,263	13,231
Loss on disposal of property	155	298
Deferred income taxes	4,727	1,441
Excess tax benefit from stock plans	(353)	(258)
Allowances for accounts receivable	42	(504)
Changes in operating assets and liabilities:
Accounts receivable	22,651	19,364
Other assets	946	(5,444)
Accounts payable and accrued liabilities	(6,475)	(17,557)
Income taxes payable	401	962
Deferred revenue	2,708	7,329
Net cash flows from operating activities	59,729	49,262
Cash flows used in investing activities:
Purchases of investments	(14,376)	(25,970)
Sales and maturities of investments	9,440	4,885
Purchases of property and equipment	(523)	(2,617)
Payments for acquisitions, net of cash acquired	(28,270)	0
Net cash flows used in investing activities	(33,729)	(23,702)
Cash flows used in financing activities:
Proceeds from stock-based compensation plans	5,031	6,007
Purchases of stock related to withholding taxes from the issuance of restricted stock units	(2,367)	(2,751)
Repurchases of common stock	(24,954)	(58,516)
Excess tax benefit from stock plans	353	258
Dividend payments to shareholders	(12,116)	0
Payment of long-term debt	(7,500)	(5,625)
Net cash flows used in financing activities	(41,553)	(60,627)
Effect of exchange rate changes on cash	6,403	2,421
Net decrease in cash and cash equivalents	(9,150)	(32,646)
Cash and cash equivalents, beginning of period	207,036	212,379
Cash and cash equivalents, end of period	197,886	179,733
Supplemental disclosure:
Cash paid for income taxes, net of refunds of $2,928 in 2017 and $647 in 2016	4,962	7,778
Cash paid for interest	1,745	1,559
Non-cash investing and financing activities:
Total fair value of restricted stock awards, restricted stock units and deferred stock units on date vested	13,754	7,769
Unsettled repurchases of common stock	0	1,516
Dividends declared	6,035	0
Unsettled sale of property, plant and equipment, net	$ 1,488	$ 0