Basis of Presentation - Consolidated Income Statement (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended			6 Months Ended
	May 31, 2019	May 31, 2018		May 31, 2019	May 31, 2018
Revenue:
Total revenue	$ 99,995	$ 92,864	[1]	$ 189,544	$ 188,274	[1]
Costs of revenue	17,611	16,643	[1]	33,650	33,546	[1]
Gross profit	82,384	76,221	[1]	155,894	154,728	[1]
Total operating expenses	67,643	57,671	[1]	125,744	117,047	[1]
Income from operations	14,741	18,550	[1]	30,150	37,681	[1]
Other expense, net	(2,317)	(1,284)	[1]	(4,320)	(2,869)	[1]
Income before income taxes	12,424	17,266	[1]	25,830	34,812	[1]
Provision for income taxes	4,243	4,362	[1]	8,247	8,175	[1]
Net income	$ 8,181	$ 12,904	[1]	$ 17,583	$ 26,637	[1]
Earnings per share:
Basic (in dollars per share)	$ 0.18	$ 0.28	[1]	$ 0.39	$ 0.58	[1]
Diluted (in dollars per share)	$ 0.18	$ 0.28	[1]	$ 0.39	$ 0.57	[1]
Weighted average shares outstanding:
Basic (in shares)	44,611	45,531	[1]	44,784	46,030	[1]
Diluted (in shares)	45,287	46,087	[1]	45,287	46,781	[1]
Software licenses
Revenue:
Total revenue	$ 29,728	$ 22,526	[1]	$ 52,530	$ 48,580	[1]
Costs of revenue	925	1,233	[1]	2,092	2,494	[1]
Maintenance and services
Revenue:
Total revenue	70,267	70,338	[1]	137,014	139,694	[1]
Costs of revenue	$ 10,580	9,511	[1]	$ 20,019	19,335	[1]
As Reported
Revenue:
Total revenue		96,102			190,149
Costs of revenue		16,643			33,546
Gross profit		79,459			156,603
Total operating expenses		57,671			117,047
Income from operations		21,788			39,556
Other expense, net		(1,284)			(2,869)
Income before income taxes		20,504			36,687
Provision for income taxes		5,101			8,372
Net income		$ 15,403			$ 28,315
Earnings per share:
Basic (in dollars per share)		$ 0.34			$ 0.62
Diluted (in dollars per share)		$ 0.33			$ 0.61
Weighted average shares outstanding:
Basic (in shares)		45,531			46,030
Diluted (in shares)		46,087			46,781
As Reported | Software licenses
Revenue:
Total revenue		$ 26,439			$ 51,782
As Reported | Maintenance and services
Revenue:
Total revenue		69,663			138,367
Accounting Standards Update 2014-09 | Adjustments
Revenue:
Total revenue		(3,238)			(1,875)
Costs of revenue		0			0
Gross profit		(3,238)			(1,875)
Total operating expenses		0			0
Income from operations		(3,238)			(1,875)
Other expense, net		0			0
Income before income taxes		(3,238)			(1,875)
Provision for income taxes		(739)			(197)
Net income		$ (2,499)			$ (1,678)
Earnings per share:
Basic (in dollars per share)		$ (0.06)			$ (0.04)
Diluted (in dollars per share)		$ (0.05)			$ (0.04)
Weighted average shares outstanding:
Basic (in shares)		0			0
Diluted (in shares)		0			0
Accounting Standards Update 2014-09 | Adjustments | Software licenses
Revenue:
Total revenue		$ (3,913)			$ (3,202)
Accounting Standards Update 2014-09 | Adjustments | Maintenance and services
Revenue:
Total revenue		$ 675			$ 1,327

[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.