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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Revenue from circulation or sale of subscriptions (for example, but not limited to, subscriptions to a magazine or newspaper).

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Note 8 - Business Combinations (Details) (USD $)	0 Months Ended	3 Months Ended		0 Months Ended
Note 8 - Business Combinations (Details) (USD $)	Feb. 06, 2015	Feb. 28, 2015	Feb. 28, 2014	Sep. 01, 2013	Aug. 31, 2014
Note 8 - Business Combinations (Details) [Line Items]
Goodwill		$ 305,893,000us-gaap_Goodwill			$ 285,608,000us-gaap_Goodwill
Computer Software, Intangible Asset [Member] \| Code Red, Inc. [Member]
Note 8 - Business Combinations (Details) [Line Items]
Finite-Lived Intangible Asset, Useful Life	6 years
Customer Relationships [Member] \| Code Red, Inc. [Member]
Note 8 - Business Combinations (Details) [Line Items]
Finite-Lived Intangible Asset, Useful Life	7 years
Noncompete Agreements [Member] \| Code Red, Inc. [Member]
Note 8 - Business Combinations (Details) [Line Items]
Finite-Lived Intangible Asset, Useful Life	4 years
Trade Names [Member] \| Code Red, Inc. [Member]
Note 8 - Business Combinations (Details) [Line Items]
Finite-Lived Intangible Asset, Useful Life	3 years
Code Red, Inc. [Member]
Note 8 - Business Combinations (Details) [Line Items]
Business Combination, Consideration Transferred	34,616,000
Number of Employees	32
Subscription and Circulation Revenue	9,300,000
Finite-lived Intangible Assets Acquired	8,200,000	8,200,000
Goodwill	29,600,000	29,624,000
Matrix Data Limited [Member]
Note 8 - Business Combinations (Details) [Line Items]
Business Combination, Consideration Transferred			31,800,000
Subscription and Circulation Revenue			7,000,000
Revere Data, LLC [Member]
Note 8 - Business Combinations (Details) [Line Items]
Business Combination, Consideration Transferred				15,300,000
Subscription and Circulation Revenue				$ 4,900,000