Note 5 - Offsetting of Derivative Instruments (Details) - USD ($) $ in Thousands		Feb. 29, 2016	Aug. 31, 2015
Foreign Exchange Contract [Member]
Gross derivative asset amounts		$ 177	$ 1,040
Gross derivative asset amounts offset in balance sheet		$ (177)	(5)
Net derivative asset amounts			1,035
Gross derivative liability amounts		$ (4,291)	(1,607)
Gross derivative liability amounts offset in balance sheet		177	5
Net derivative liability amounts		(4,114)	(1,602)
Gross derivative amounts		$ (4,114)	$ (567)
Gross derivative amounts offset in balance sheet
Fair Value Asset (Liability)		$ (4,114)	$ (567)
Net derivative asset amounts	[1]		1,035
Net derivative liability amounts	[1]	$ (4,114)	$ (1,602)

[1] The Company utilizes the income approach to measure fair value for its derivative instruments (foreign exchange forward contracts). The income approach uses pricing models that rely on market observable inputs such as spot, forward and interest rates, as well as credit default swap spreads and therefore are classified as Level 2.