INCOME TAXES (Significant Components of Deferred Tax Assets) (Details) - USD ($) $ in Thousands	Aug. 31, 2021	Aug. 31, 2020
Deferred tax assets:
U.S. net operating loss carryforward	$ 2,866	$ 4,416
Foreign tax credits	22,420	12,691
Deferred compensation	2,334	1,357
U.S. timing differences	3,759	3,742
Foreign net operating losses	5,051	4,811
Gross deferred tax assets	60,986	48,109
U.S. deferred tax liabilities (depreciation and other timing differences)	(4,083)	(4,679)
Foreign deferred tax liabilities netted against deferred tax assets	(5,753)	(4,311)
U.S. valuation allowance	(22,523)	(12,746)
Foreign valuation allowance	(4,402)	(4,701)
Net deferred tax assets	24,225	21,672
Accrued Expenses And Other Timing Differences, Foreign Timing Differences [Member]
Deferred tax assets:
Foreign timing differences	7,636	6,808
Depreciation And Amortization, Foreign Timing Differences [Member]
Deferred tax assets:
Foreign timing differences	10,498	9,043
Deferred Income, Foreign Timing Differences [Member]
Deferred tax assets:
Foreign timing differences	$ 6,422	$ 5,241