Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Nov. 30, 2021	Nov. 30, 2020	Nov. 30, 2019
Cash flows from operating activities:
Net income	$ 78,420	$ 79,722	$ 26,400
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization of property and equipment	5,477	6,144	7,552
Amortization of acquired intangibles and other	47,507	28,621	49,127
Amortization of debt discount and issuance costs on Notes	8,195	0	0
Stock-based compensation	29,724	23,482	23,311
Non-cash lease expense	10,946	8,609
Loss on disposal of property and equipment	7	1,025	376
Impairment of intangible and long-lived assets	0	0	24,096
Deferred income taxes	(908)	(2,622)	(14,869)
Allowances for bad debt and sales credits	(282)	164	546
Gain on sale of intangible assets	0	(889)	0
Changes in operating assets and liabilities:
Accounts receivable and unbilled receivables	(10,998)	10,682	(24,655)
Other assets	(15,105)	1,561	(1,902)
Inventories	245	0	0
Accounts payable and accrued liabilities	5,486	(4,974)	9,116
Lease liabilities	(8,406)	(8,101)
Income taxes payable	(2,251)	3	(454)
Deferred revenue	30,473	1,420	29,840
Net cash flows from operating activities	178,530	144,847	128,484
Cash flows used in investing activities:
Purchases of investments	0	(5,009)	(10,550)
Sales and maturities of investments	5,950	16,401	25,320
Purchases of property and equipment	(4,654)	(6,517)	(3,998)
Payments for acquisitions, net of cash acquired	(253,961)	(213,057)	(225,298)
Proceeds from sale of long-lived assets, net	0	889	6,146
Decrease in escrow receivable and other	2,330	0	0
Net cash flows used in investing activities	(250,335)	(207,293)	(208,380)
Cash flows from financing activities:
Proceeds from stock-based compensation plans	15,033	11,099	9,265
Payments for taxes related to net share settlements of equity awards	(5,186)	(5,331)	(4,278)
Repurchases of common stock	(35,000)	(60,000)	(25,000)
Proceeds from issuance of senior convertible notes, net of issuance costs of $9.9 million	350,100	0	0
Purchase of capped calls	(43,056)	0
Dividend payments to stockholders	(31,561)	(29,900)	(27,760)
Proceeds from the issuance of debt	0	98,500	184,985
Payment of principal on long-term debt	(117,313)	(11,288)	(5,309)
Payment of issuance costs for long-term debt	(904)	0	(1,611)
Net cash flows from financing activities	132,113	3,080	130,292
Effect of exchange rate changes on cash	(2,892)	3,097	(1,263)
Net increase (decrease) in cash and cash equivalents	57,416	(56,269)	49,133
Cash and cash equivalents, beginning of year	97,990	154,259	105,126
Cash and cash equivalents, end of year	155,406	97,990	154,259
Supplemental disclosure:
Cash paid for income taxes, net of refunds of $894 in 2021, $724 in 2020 and $1,385 in 2019	25,915	16,107	16,340
Cash paid for interest	8,537	9,175	8,666
Non-cash investing and financing activities:
Total fair value of restricted stock awards, restricted stock units and deferred stock units on date vested	18,102	17,046	16,573
Dividends declared	$ 7,925	$ 7,904	$ 7,498