Note 11 - Identifiable Intangible Assets (Details) - USD ($) $ in Thousands	May 31, 2016	Aug. 31, 2015
Data Content [Member]
Gross Carrying Amount	$ 36,218	$ 39,911
Accumulated Amortization	16,996	16,667
Net Carrying Amount	19,222	23,244
Customer Relationships [Member]
Gross Carrying Amount	45,532	27,873
Accumulated Amortization	15,791	18,241
Net Carrying Amount	29,741	9,632
Computer Software, Intangible Asset [Member]
Gross Carrying Amount	62,596	21,203
Accumulated Amortization	18,905	15,042
Net Carrying Amount	43,691	6,161
Noncompete Agreements [Member]
Gross Carrying Amount	4,344	1,058
Accumulated Amortization	969	637
Net Carrying Amount	3,375	421
Trade Names [Member]
Gross Carrying Amount	2,739	1,614
Accumulated Amortization	790	1,020
Net Carrying Amount	1,949	594
Gross Carrying Amount	151,429	91,659
Accumulated Amortization	53,451	51,607
Net Carrying Amount	$ 97,978	$ 40,052