Basis of Presentation - Consolidated Income Statement (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Feb. 28, 2019	Feb. 28, 2018
Revenue:
Total revenue	$ 89,549	$ 95,410	[1]
Costs of revenue	16,039	16,903	[1]
Gross Profit	73,510	78,507	[1]
Total operating expenses	58,101	59,376	[1]
Income from operations	15,409	19,131	[1]
Other expense, net	(2,003)	(1,585)	[1]
Income before income taxes	13,406	17,546	[1]
Provision for income taxes	4,004	3,814	[1]
Net income	$ 9,402	$ 13,732	[1]
Earnings Per Share [Abstract]
Basic (in dollars per share)	$ 0.21	$ 0.30	[1]
Diluted (in dollars per share)	$ 0.21	$ 0.29	[1]
Weighted average shares outstanding:
Basic (in shares)	44,956	46,529	[1]
Diluted (in shares)	45,286	47,476	[1]
Software licenses
Revenue:
Total revenue	$ 22,802	$ 26,054	[1]
Costs of revenue	1,167	1,261	[1]
Maintenance and services
Revenue:
Total revenue	66,747	69,356	[1]
Costs of revenue	$ 9,439	9,824	[1]
As Adjusted
Revenue:
Total revenue		94,047
Costs of revenue		16,903
Gross Profit		77,144
Total operating expenses		59,376
Income from operations		17,768
Other expense, net		(1,585)
Income before income taxes		16,183
Provision for income taxes		3,271
Net income		$ 12,912
Earnings Per Share [Abstract]
Basic (in dollars per share)		$ 0.28
Diluted (in dollars per share)		$ 0.27
Weighted average shares outstanding:
Basic (in shares)		46,529
Diluted (in shares)		47,476
As Adjusted | Software licenses
Revenue:
Total revenue		$ 25,343
As Adjusted | Maintenance and services
Revenue:
Total revenue		68,704
Accounting Standards Update 2014-09 | Adjustments
Revenue:
Total revenue		1,363
Costs of revenue		0
Gross Profit		1,363
Total operating expenses		0
Income from operations		1,363
Other expense, net		0
Income before income taxes		1,363
Provision for income taxes		543
Net income		$ 820
Earnings Per Share [Abstract]
Basic (in dollars per share)		$ 0.02
Diluted (in dollars per share)		$ 0.02
Weighted average shares outstanding:
Basic (in shares)		0
Diluted (in shares)		0
Accounting Standards Update 2014-09 | Adjustments | Software licenses
Revenue:
Total revenue		$ 711
Accounting Standards Update 2014-09 | Adjustments | Maintenance and services
Revenue:
Total revenue		$ 652

[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.