Note 10 - Identifiable Intangible Assets (Details) - USD ($) $ in Thousands	Nov. 30, 2015	Aug. 31, 2015
Data Content [Member]
Gross Carrying Amount	$ 38,700	$ 39,911
Accumulated Amortization	16,860	16,667
Net Carrying Amount	21,840	23,244
Customer Relationships [Member]
Gross Carrying Amount	54,549	27,873
Accumulated Amortization	18,799	18,241
Net Carrying Amount	35,750	9,632
Computer Software, Intangible Asset [Member]
Gross Carrying Amount	64,169	21,203
Accumulated Amortization	16,098	15,042
Net Carrying Amount	48,071	6,161
Noncompete Agreements [Member]
Gross Carrying Amount	4,555	1,058
Accumulated Amortization	750	637
Net Carrying Amount	3,805	421
Trade Names [Member]
Gross Carrying Amount	3,601	1,614
Accumulated Amortization	1,133	1,020
Net Carrying Amount	2,468	594
Gross Carrying Amount	165,574	91,659
Accumulated Amortization	53,640	51,607
Net Carrying Amount	$ 111,934	$ 40,052