Note 5 - Fair Value Amounts of Derivative Instruments and Gains (Details) - Foreign Exchange Forward [Member] - Cash Flow Hedging [Member] - Designated as Hedging Instrument [Member] - USD ($) $ in Thousands	Nov. 30, 2015	Aug. 31, 2015
Prepaid Expenses and Other Current Assets [Member]
Prepaid expenses and other current assets	$ 607	$ 1,035
Accounts Payable and Accrued Liabilities [Member]
Accounts payable and accrued expenses	780
Deferred Rent and Other Noncurrent Liabilities [Member]
Accounts payable and accrued expenses	$ 1,054	$ 1,602