Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands		3 Months Ended
		Feb. 28, 2019	Feb. 28, 2018	[2]
Cash flows from operating activities:
Net income		$ 9,402	$ 13,732	[1]
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization of property and equipment		1,620	1,682
Amortization of acquired intangibles and other		8,866	9,620
Stock-based compensation		5,806	4,570
Loss on disposal of property and equipment		153	135
Deferred income taxes		(3,069)	137
Allowances for bad debt and sales credits		89	137
Changes in operating assets and liabilities:
Accounts receivable		3,861	8,667
Other assets		5,147	2,382
Accounts payable and accrued liabilities		(13,128)	(17,830)
Income taxes payable		(246)	(290)
Deferred revenue		5,943	8,653
Net cash flows from operating activities		24,444	31,595
Cash flows from (used in) investing activities:
Purchases of investments		(750)	(7,374)
Sales and maturities of investments		8,155	6,816
Purchases of property and equipment		(246)	(1,386)
Net cash flows from (used in) investing activities		7,159	(1,944)
Cash flows used in financing activities:
Proceeds from stock-based compensation plans		1,894	2,469
Repurchases of common stock		(25,000)	(45,000)
Dividend payments to shareholders		(6,992)	(6,619)
Payment of principal on long-term debt		(1,547)	(1,547)
Net cash flows used in financing activities		(31,645)	(50,697)
Effect of exchange rate changes on cash		1,432	4,693
Net increase (decrease) in cash and cash equivalents		1,390	(16,353)
Cash and cash equivalents, beginning of period	[3]	105,126
Cash and cash equivalents, end of period		106,516
Supplemental disclosure:
Cash paid for income taxes, net of refunds of $166 in 2019 and $307 in 2018		1,496	1,614
Cash paid for interest		1,169	942
Non-cash investing and financing activities:
Total fair value of restricted stock awards, restricted stock units and deferred stock units on date vested		76	43
Dividends declared		$ 6,939	$ 6,482

[1] The Company adopted ASC 606 effective December 1, 2018 using the full retrospective method. See Note 1. Nature of Business and Basis of Presentation for further information.

[2] The Company adopted ASC 606 effective December 1, 2018 using the full retrospective method. See Note 1. Nature of Business and Basis of Presentation for further information. February 28, 2019February 28, 2018Income tax refunds166307

[3] The Company adopted ASC 606 effective December 1, 2018 using the full retrospective method. See Note 1. Nature of Business and Basis of Presentation for further information.