Note 11 - Intangible Assets - Identifiable Intangible Assets (Details) - USD ($) $ in Thousands	Aug. 31, 2018	Aug. 31, 2017
Gross Carrying Amount	$ 248,289	$ 248,771
Accumulated Amortization	99,354	75,228
Net Carrying Amount	148,935	173,543
Data Content [Member]
Gross Carrying Amount	33,992	34,116
Accumulated Amortization	20,990	18,899
Net Carrying Amount	13,002	15,217
Customer Relationships [Member]
Gross Carrying Amount	98,882	99,779
Accumulated Amortization	29,387	22,339
Net Carrying Amount	69,495	77,440
Computer Software, Intangible Asset [Member]
Gross Carrying Amount	106,505	105,963
Accumulated Amortization	44,231	30,889
Net Carrying Amount	62,274	75,074
Noncompete Agreements [Member]
Gross Carrying Amount	4,840	4,833
Accumulated Amortization	2,381	1,518
Net Carrying Amount	2,459	3,315
Trade Names [Member]
Gross Carrying Amount	4,070	4,080
Accumulated Amortization	2,365	1,583
Net Carrying Amount	$ 1,705	$ 2,497

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- Definition

Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 928
-SubTopic 340
-Section 50
-Paragraph 1
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Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 30
-Section 50
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 45
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