Consolidated Statements of Cash Flows $ in Thousands	12 Months Ended
	Nov. 30, 2019 USD ($)		Nov. 30, 2018 USD ($)		Nov. 30, 2017 USD ($)
Cash flows from operating activities:
Net income	$ 26,400		$ 49,670	[1],[2],[3]	$ 29,021	[1],[2],[3]
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization of property and equipment	7,552		6,941	[2]	7,526	[2]
Amortization of acquired intangibles and other	49,127		37,561	[2]	35,370	[2]
Stock-based compensation	23,311		20,569	[2]	14,153	[2]
Loss on disposal of property and equipment	376		390	[2]	416	[2]
Loss on assets held for sale	0		5,147	[1],[2]	0	[1],[2]
Impairment of intangible and long-lived assets	24,096		0	[2]	0	[2]
Deferred income taxes	(14,869)		(2,328)	[2]	(4,254)	[2]
Excess tax benefit from stock plans	0		0	[2]	(904)	[2]
Allowances for bad debt and sales credits	546		262	[2]	46	[2]
Changes in operating assets and liabilities:
Accounts receivable and unbilled receivables	(24,655)		18,708	[2]	14,346	[2]
Other assets	(1,902)		(10,332)	[2]	7,518	[2]
Accounts payable and accrued liabilities	9,116		(11,842)	[2]	673	[2]
Income taxes payable	(454)		(2,890)	[2]	893	[2]
Deferred revenue	29,840		9,496	[2]	882	[2]
Net cash flows from operating activities	128,484		121,352	[2]	105,686	[2]
Cash flows (used in) from investing activities:
Purchases of investments	(10,550)		(8,258)	[2]	(40,380)	[2]
Sales and maturities of investments	25,320		23,101	[2]	31,559	[2]
Purchases of property and equipment	(3,998)		(7,250)	[2]	(3,377)	[2]
Payments for acquisitions, net of cash acquired	(225,298)		0	[2]	(77,150)	[2]
Proceeds from sale of property, plant and equipment, net	6,146		0	[2]	1,557	[2]
Net cash flows (used in) from investing activities	(208,380)		7,593	[2]	(87,791)	[2]
Cash flows from (used in) financing activities:
Proceeds from stock-based compensation plans	9,265		9,205	[2]	10,025	[2]
Payments for taxes related to net share settlements of equity awards	(4,278)		(3,999)	[2]	(3,756)	[2]
Repurchases of common stock	(25,000)		(120,000)	[2]	(73,936)	[2]
Dividend payments to shareholders	(27,760)		(25,789)	[2]	(24,127)	[2]
Proceeds from the issuance of debt	184,985		0	[2]	0	[2]
Excess tax benefit from stock plans	0		0	[2]	904	[2]
Payment of principal on long-term debt	(5,309)		(6,188)	[2]	(11,250)	[2]
Payment of issuance costs for long-term debt	(1,611)		0	[2]	(1,174)	[2]
Net cash flows from (used in) financing activities	130,292		(146,771)	[2]	(103,314)	[2]
Effect of exchange rate changes on cash	(1,263)		(10,512)	[2]	11,847	[2]
Net increase (decrease) in cash and cash equivalents	49,133		(28,338)	[2]	(73,572)	[2]
Cash and cash equivalents, beginning of year	105,126	[2]	133,464	[2]	207,036	[2]
Cash and cash equivalents, end of year	154,259		105,126	[2]	133,464	[2]
Supplemental disclosure:
Cash paid for income taxes, net of refunds of $1,385 in 2019, $909 in 2018, and $3,997 in 2017	16,340		25,451		25,992
Cash paid for interest	8,666		4,220		3,597
Non-cash investing and financing activities:
Total fair value of restricted stock awards, restricted stock units and deferred stock units on date vested	16,573		16,431		20,089
Dividends declared	$ 7,498		$ 6,998	[4]	$ 6,619

[1] The Company adopted the accounting standard related to revenue recognition ("ASC 606") effective December 1, 2018 using the full retrospective method. See Note 1. Nature of Business and Summary of Significant Accounting Policies for further information.

[2] The Company adopted the accounting standard related to revenue recognition ("ASC 606") effective December 1, 2018 using the full retrospective method. See Note 1. Nature of Business and Summary of Significant Accounting Policies for further information.

[3] The Company adopted the accounting standard related to revenue recognition ("ASC 606") effective December 1, 2018 using the full retrospective method. See Note 1. Nature of Business and Summary of Significant Accounting Policies for further information.

[4] The Company adopted the accounting standard related to revenue recognition ("ASC 606") effective December 1, 2018 using the full retrospective method. See Note 1. Nature of Business and Summary of Significant Accounting Policies for further information.