INCOME TAXES (Narrative) (Details)	12 Months Ended
	Aug. 31, 2021 USD ($) country	Aug. 31, 2020 USD ($)	Aug. 31, 2019 USD ($)	Aug. 31, 2018 USD ($)
Income Tax Contingency [Line Items]
Provision for income taxes, percentage	33.30%	32.50%	33.80%
Favorable impact due to greater portion of income falling into lower tax jurisdiction	2.50%
Unfavorable impact from nonrecurrence of changes in income tax liabilities from uncretain tax position	1.80%
Unfavorable net impact resulting from the U.S. Tax Reform Transition Tax	0.40%
Unfavorable impact due to valuation allowances on deferred tax assets from foreign tax credits, percent	0.40%
Deferred Tax Assets, Net, Foreign	$ 19,500,000	$ 16,900,000
Operating loss carryforwards (NOLs), annual limitation amount	6,100,000
Undistributed foreign earnings	254,500,000	177,500,000
Unrecognized tax benefits	3,911,000	4,573,000	$ 6,490,000	$ 7,005,000
Deferred income taxes that could reduce unrecognized tax benefits	1,500,000
Timing Adjustments	400,000
Unrecognized tax benefit, net amount if recognized would favorably affect the effective tax rate	3,500,000
Expected change in unrecognized tax benefits reduction of taxes payable	900,000
Income taxes receivable	30,363,000	31,060,000
Income tax interest and/or penalties accrued	$ 1,600,000	2,000,000.0
Number of countries that require the Company to pay taxes based on a percentage of sales rather than income | country	2
Florida State Jurisdiction [Member] | Aeropost, Inc [Member]
Income Tax Contingency [Line Items]
Operating loss carryforwards	$ 15,700,000
NOL expected to expire	11,100,000
Domestic Tax Authority [Member]
Income Tax Contingency [Line Items]
Operating loss carryforwards	10,300,000
State [Member]
Income Tax Contingency [Line Items]
Operating loss carryforwards	15,700,000
Unknown Country [Member]
Income Tax Contingency [Line Items]
Deferred tax assets, net	3,300,000	2,800,000
Income taxes receivable	$ 11,000,000.0	$ 10,400,000	$ 11,000,000.0