Nature of Business and Summary of Significant Accounting Policies (Narrative) (Details) - USD ($)	3 Months Ended				12 Months Ended
	Nov. 30, 2016	Aug. 31, 2016	May 31, 2016	Nov. 30, 2015	Nov. 30, 2016	Nov. 30, 2015	Nov. 30, 2014	Feb. 28, 2017
Summary Of Significant Accounting Policies [Line Items]
Capitalized software development costs	$ 0			$ 1,300,000	$ 0	$ 1,300,000	$ 4,100,000
Amortization					30,815,000	32,286,000	5,521,000
Impairment of software development costs					5,051,000	0	0
Impairment of goodwill					92,000,000	0	0
Impairment of goodwill and long-lived assets					97,051,000	4,962,000	0
Advertising costs					2,900,000	2,500,000	1,800,000
Acquisition-related expenses					1,240,000	4,239,000	5,862,000
Restructuring related costs					$ 1,692,000	12,989,000	2,266,000
Internal Use Software [Member]
Summary Of Significant Accounting Policies [Line Items]
Useful lives of major asset					3 years
Amortization					$ 1,000,000	1,300,000	$ 700,000
Impairment of software development costs			$ 1,500,000	$ 1,000,000
Impairment of goodwill and long-lived assets						$ 5,000,000
Restricted Stock Units (RSUs) [Member]
Summary Of Significant Accounting Policies [Line Items]
Stock-based compensation service period					3 years	3 years
Minimum [Member] | Computer Equipment and Software [Member]
Summary Of Significant Accounting Policies [Line Items]
Useful lives of major asset					3 years
Minimum [Member] | Buildings and Improvements [Member]
Summary Of Significant Accounting Policies [Line Items]
Useful lives of major asset					5 years
Minimum [Member] | Furniture and Fixtures [Member]
Summary Of Significant Accounting Policies [Line Items]
Useful lives of major asset					5 years
Minimum [Member] | Stock Options [Member]
Summary Of Significant Accounting Policies [Line Items]
Stock-based compensation service period					4 years
Maximum [Member] | Computer Equipment and Software [Member]
Summary Of Significant Accounting Policies [Line Items]
Useful lives of major asset					7 years
Maximum [Member] | Buildings and Improvements [Member]
Summary Of Significant Accounting Policies [Line Items]
Useful lives of major asset					39 years
Maximum [Member] | Furniture and Fixtures [Member]
Summary Of Significant Accounting Policies [Line Items]
Useful lives of major asset					7 years
Maximum [Member] | Stock Options [Member]
Summary Of Significant Accounting Policies [Line Items]
Stock-based compensation service period					5 years
Long-term Debt [Member] | Forecast [Member] | New Accounting Pronouncement, Early Adoption, Effect [Member] | Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Unamortized debt issuance costs reclassified from other assets to long-term debt								$ (1,100,000)
Other Assets [Member] | Forecast [Member] | New Accounting Pronouncement, Early Adoption, Effect [Member] | Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Unamortized debt issuance costs reclassified from other assets to long-term debt								$ 1,100,000
Modulus [Member]
Summary Of Significant Accounting Policies [Line Items]
Impairment of software development costs		$ 5,100,000
Acquisition-related expenses					$ 300,000
Modulus [Member] | Purchased Technology [Member]
Summary Of Significant Accounting Policies [Line Items]
Impairment of software development costs		$ 5,100,000
Application Development and Deployment [Member]
Summary Of Significant Accounting Policies [Line Items]
Impairment of goodwill	$ 92,000,000				$ 92,000,000