Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Feb. 28, 2018	Feb. 28, 2017
Cash flows from operating activities:
Net income (loss)	$ 12,912	$ (525)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization of property and equipment	1,682	1,978
Amortization of intangibles and other	9,620	7,382
Stock-based compensation	4,570	1,630
Loss on disposal of property	135	0
Deferred income taxes	(406)	4,268
Excess tax benefit from stock plans	0	(183)
Allowances for accounts receivable	137	40
Changes in operating assets and liabilities:
Accounts receivable	8,329	16,937
Other assets	2,382	(2,278)
Accounts payable and accrued liabilities	(17,830)	(989)
Income taxes payable	(290)	55
Deferred revenue	10,354	8,985
Net cash flows from operating activities	31,595	37,300
Cash flows (used in) from investing activities:
Purchases of investments	(7,374)	(854)
Sales and maturities of investments	6,816	6,155
Purchases of property and equipment	(1,386)	(383)
Net cash flows (used in) from investing activities	(1,944)	4,918
Cash flows used in financing activities:
Proceeds from stock-based compensation plans	2,469	2,770
Payments for taxes related to net share settlements of equity awards	0	(1,306)
Repurchases of common stock	(45,000)	(15,190)
Excess tax benefit from stock plans	0	183
Dividend payments to shareholders	(6,619)	(6,072)
Payment of long-term debt	(1,547)	(3,750)
Net cash flows used in financing activities	(50,697)	(23,365)
Effect of exchange rate changes on cash	4,693	1,018
Net (decrease) increase in cash and cash equivalents	(16,353)	19,871
Cash and cash equivalents, beginning of period	133,464	207,036
Cash and cash equivalents, end of period	117,111	226,907
Supplemental disclosure:
Cash paid (refunded) for income taxes, net of refunds of $307 in 2018 and $2,121 in 2017	1,614	(209)
Cash paid for interest	942	844
Non-cash financing activities:
Total fair value of restricted stock awards, restricted stock units and deferred stock units on date vested	43	9,393
Unsettled repurchases of common stock	0	2,894
Dividends declared	$ 6,482	$ 6,037