INCOME TAXES (Narrative) (Details)	12 Months Ended
	Aug. 31, 2020 USD ($) country	Aug. 31, 2019 USD ($)	Aug. 31, 2018 USD ($)	Aug. 31, 2017 USD ($)
Income Tax Contingency [Line Items]
Provision for income taxes, percentage	32.50%	33.80%	39.30%
Favorable tax impact	0.70%
Favorable net impact resulting from the U.S. Tax Reform Transition Tax	1.10%
Unfavorable net impact resulting from the U.S. Tax Reform Transition Tax	1.30%
Net favorable impact	1.30%
Favorable impact due to greater portion of income falling into lower tax jurisdiction	0.40%
Favorable impact resulting from changes in income tax liabilities	1.20%
Deferred Tax Assets, Net, Foreign	$ 16,900,000	$ 13,500,000
Operating loss carryforwards (NOLs), annual limitation amount	6,100,000
Undistributed foreign earnings	177,500,000	108,900,000
Unrecognized tax benefits	4,573,000	6,490,000	$ 7,005,000	$ 7,694,000
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	4,200,000
Expected change in unrecognized tax benefits reduction of taxes payable	800,000
Income taxes receivable	31,060,000	25,390,000
Income tax interest and/or penalties accrued	$ 2,000,000.0	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	$ 16,400,000
NOL expected to expire	11,100,000
Domestic Tax Authority [Member]
Income Tax Contingency [Line Items]
Operating loss carryforwards	16,800,000
State [Member]
Income Tax Contingency [Line Items]
Operating loss carryforwards	16,400,000
Unknown Country [Member]
Income Tax Contingency [Line Items]
Deferred tax assets, net	2,800,000	2,700,000
Income taxes receivable	$ 10,400,000	$ 7,800,000	$ 10,400,000