INCOME TAXES (Significant Components of Deferred Tax Assets) (Details) - USD ($) $ in Thousands	Aug. 31, 2020	Aug. 31, 2019
Deferred tax assets:
U.S. net operating loss carryforward	$ 4,416	$ 3,763
Foreign tax credits	12,691	7,170
Deferred compensation	1,357	927
U.S. timing differences	3,742	2,598
Foreign net operating losses	4,811	4,481
Gross deferred tax assets	48,109	37,843
U.S. deferred tax liabilities (depreciation and other timing differences)	(4,679)	(5,286)
Foreign deferred tax liabilities netted against deferred tax assets	(4,311)	(5,360)
U.S. valuation allowance	(12,746)	(7,177)
Foreign valuation allowance	(4,701)	(4,546)
Net deferred tax assets	21,672	15,474
Accrued Expenses And Other Timing Differences, Foreign Timing Differences [Member]
Deferred tax assets:
Foreign timing differences	6,808	5,581
Depreciation And Amortization, Foreign Timing Differences [Member]
Deferred tax assets:
Foreign timing differences	9,043	8,819
Deferred Income, Foreign Timing Differences [Member]
Deferred tax assets:
Foreign timing differences	$ 5,241	$ 4,504