INCOME TAXES (Significant Components of Deferred Tax Assets) (Details) - USD ($) $ in Thousands	Aug. 31, 2018	Aug. 31, 2017
Deferred tax assets:
U.S. net operating loss carryforward	$ 4,470	$ 1,684
Foreign tax credits	126	3,794
Deferred compensation	907	1,633
U.S. timing differences	1,609	3,042
Foreign net operating losses	5,276	10,247
Gross deferred tax assets	31,461	37,822
U.S. deferred tax liabilities (depreciation and other timing	(5,844)	(3,646)
Foreign deferred tax liabilities netted against deferred tax assets	(5,722)	(4,744)
U.S. valuation allowance	(1,005)	(488)
Foreign valuation allowance	(8,724)	(13,532)
Net deferred tax assets	10,166	15,412
Accrued Expenses And Other Timing Differences [Member]
Deferred tax assets:
Foreign timing differences	5,122	3,871
Depreciaton And Amortization, Foreign Timing Differences [Member]
Deferred tax assets:
Foreign timing differences	10,406	9,514
Deferred Income Foreign Timing Differences [Member]
Deferred tax assets:
Foreign timing differences	$ 3,545	$ 4,037