Note 6 - Other Comprehensive (Loss) Income and Accumulated Other Comprehensive Loss - Reclassified Out of Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		May 31, 2017	May 31, 2016	May 31, 2017	May 31, 2016
Unrealized gain on cash flow hedges recognized in AOCL		$ 3,467	$ 3,900	$ 4,006	$ 404
Unrealized gain on cash flow hedges recognized in AOCL		2,138	2,457	2,478	254
Other comprehensive income (loss)		25,186	12,795	17,474	(7,503)
Other comprehensive income (loss)		23,701	11,347	14,913	(7,638)
Foreign currency translation adjustments		21,316	8,883	10,680	(7,867)
Foreign currency translation adjustments		21,316	8,883	10,680	(7,867)
Realized loss (gain) on cash flow hedges reclassified to earnings	[1]	403	12	2,788	(40)
Realized loss (gain) on cash flow hedges reclassified to earnings	[1]	$ 247	$ 7	$ 1,755	$ (25)

[1] Reclassified to Selling, General and Administrative Expenses