Note 10 - Property, Equipment and Leasehold Improvements (Details) - Property, Equipment and Leasehold Improvements (USD $) In Thousands, unless otherwise specified	Aug. 31, 2013	Aug. 31, 2012
Property, Equipment and Leasehold Improvements [Abstract]
Leasehold improvements	$ 90,040	$ 88,327
Computers and related equipment	73,320	74,370
Furniture and fixtures	28,978	26,849
Subtotal	192,338	189,546
Less accumulated depreciation and amortization	(126,967)	(113,016)
Property, equipment and leasehold improvements, net	$ 65,371	$ 76,530