Note 5 - Offsetting of Derivative Instruments (Details) - USD ($) $ in Thousands		Nov. 30, 2015	Aug. 31, 2015
Foreign Exchange Contract [Member]
Gross derivative asset amounts		$ 789	$ 1,040
Gross derivative asset amounts offset in balance sheet		(182)	(5)
Net derivative asset amounts		607	1,035
Gross derivative liability amounts		(2,016)	(1,607)
Gross derivative liability amounts offset in balance sheet		182	5
Net derivative liability amounts		(1,834)	(1,602)
Gross derivative amounts		$ (1,227)	$ (567)
Gross derivative amounts offset in balance sheet
Net derivative amounts		$ (1,227)	$ (567)
Net derivative asset amounts	[1]	607	1,035
Net derivative liability amounts	[1]	$ (1,834)	$ (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.