Note 15 - Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Feb. 28, 2015	May. 31, 2015	Aug. 31, 2014
Income Tax Disclosure [Abstract]
Tax Adjustments, Settlements, and Unusual Provisions	$ (5,100)
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent		35.00%
Unrecognized Tax Benefits		$ 6,381	$ 5,501
Unrecognized Tax Benefits, Interest on Income Taxes Accrued		1,100
Unrecognized Tax Benefits that Would Impact Effective Tax Rate		$ 700