Note 7 - Other Comprehensive Income (Loss) and Accumulated Other Comprehensive Loss - Reclassified Out of Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Feb. 28, 2019	Feb. 28, 2018	Feb. 28, 2019	Feb. 28, 2018
Foreign currency translation adjustments, pre-tax	$ 5,026	$ 9,400	$ (4,478)	$ 17,866
Foreign currency translation adjustments	5,026	9,400	(4,478)	17,866
Net unrealized gain (loss) on cash flow hedges recognized in AOCL, pre-tax	706	(2,170)	2,332	(2,934)
Net unrealized gain (loss) on cash flow hedges recognized in AOCL	527	(1,268)	1,565	(1,744)
Other comprehensive income (loss), pre-tax	5,732	7,230	(2,146)	14,932
Other comprehensive income (loss)	$ 5,553	$ 8,132	$ (2,913)	$ 16,122

Amount before tax, after reclassification adjustments of other comprehensive income (loss).

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Amount before tax, after reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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Amount before tax, after reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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