Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Feb. 29, 2020	Feb. 28, 2019
Cash flows from operating activities:
Net income	$ 21,116	$ 9,402
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization of property and equipment	1,717	1,620
Amortization of acquired intangibles and other	5,952	8,866
Stock-based compensation	6,051	5,806
Non-cash lease expense	3,087
Loss on disposal of property and equipment	57	153
Deferred income taxes	1,967	(3,069)
Allowances for bad debt and sales credits	236	89
Changes in operating assets and liabilities:
Accounts receivable	9,810	3,861
Other assets	2,010	5,147
Accounts payable and accrued liabilities	(20,893)	(13,128)
Increase (Decrease) In Lease Liability	(2,356)
Income taxes payable	373	(246)
Deferred revenue	3,889	5,943
Net cash flows from operating activities	33,016	24,444
Cash flows from investing activities:
Purchases of investments	(4,259)	(750)
Sales and maturities of investments	7,767	8,155
Purchases of property and equipment	(1,148)	(246)
Net cash flows from investing activities	2,360	7,159
Cash flows used in financing activities:
Proceeds from stock-based compensation plans	4,245	1,894
Payments for taxes related to net share settlements of equity awards	(1,949)	0
Repurchases of common stock	(20,000)	(25,000)
Dividend payments to shareholders	(7,468)	(6,992)
Payment of principal on long-term debt	(1,882)	(1,547)
Net cash flows used in financing activities	(27,054)	(31,645)
Effect of exchange rate changes on cash	(1,487)	1,432
Net increase in cash and cash equivalents	6,835	1,390
Cash and cash equivalents, beginning of period	154,259	105,126
Cash and cash equivalents, end of period	161,094	106,516
Supplemental disclosure:
Cash paid for income taxes, net of refunds of $196 in 2020 and $166 in 2019	3,364	1,496
Cash paid for interest	2,588	1,169
Non-cash investing and financing activities:
Total fair value of restricted stock awards, restricted stock units and deferred stock units on date vested	4,652	76
Dividends declared	$ 7,465	$ 6,939