Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	May 31, 2018	May 31, 2017
Cash flows from operating activities:
Net income	$ 28,315	$ 9,816
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization of property and equipment	3,343	3,962
Amortization of intangibles and other	19,290	15,886
Stock-based compensation	10,150	5,263
Loss on disposal of property	136	155
Deferred income taxes	(1,490)	4,727
Excess tax benefit from stock plans	0	(353)
Allowances for accounts receivable	103	42
Changes in operating assets and liabilities:
Accounts receivable	18,500	22,651
Other assets	4,614	946
Accounts payable and accrued liabilities	(18,027)	(6,475)
Income taxes payable	2,267	401
Deferred revenue	6,523	2,708
Net cash flows from operating activities	73,724	59,729
Cash flows used in investing activities:
Purchases of investments	(8,258)	(14,376)
Sales and maturities of investments	10,723	9,440
Purchases of property and equipment	(3,196)	(523)
Payments for acquisitions, net of cash acquired	0	(28,270)
Net cash flows used in investing activities	(731)	(33,729)
Cash flows used in financing activities:
Proceeds from stock-based compensation plans	4,671	5,031
Payments for taxes related to net share settlements of equity awards	(1,931)	(2,367)
Repurchases of common stock	(90,000)	(24,954)
Excess tax benefit from stock plans	0	353
Dividend payments to shareholders	(13,101)	(12,116)
Payment of long-term debt	(3,094)	(7,500)
Net cash flows used in financing activities	(103,455)	(41,553)
Effect of exchange rate changes on cash	(5,881)	6,403
Net decrease in cash and cash equivalents	(36,343)	(9,150)
Cash and cash equivalents, beginning of period	133,464	207,036
Cash and cash equivalents, end of period	97,121	197,886
Supplemental disclosure:
Cash paid for income taxes, net of refunds of $533 in 2018 and $2,928 in 2017	3,545	4,962
Cash paid for interest	1,991	1,745
Non-cash investing and financing activities:
Total fair value of restricted stock awards, restricted stock units and deferred stock units on date vested	9,404	13,754
Dividends declared	6,377	6,035
Unsettled sale of property, plant and equipment, net	$ 0	$ 1,488