INCOME TAXES (Reconciliation of Unrecognized Tax Benefits) (Details) - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2018		Aug. 31, 2017	Aug. 31, 2016
INCOME TAXES [Abstract]
Balance at beginning of fiscal year	$ 7,694		$ 7,754	$ 8,159
Gross increase - tax positions in prior period	1,600	[1]
Gross decrease - tax positions in prior period	(2,526)	[2]
Additions based on tax positions related to the current year	258		36
Settlements		[1]	(65)
Expirations of the statute of limitations for the assessment of taxes	(21)		(31)	(405)
Balance at end of fiscal year	$ 7,005		$ 7,694	$ 7,754

[1] Aeropost related unrecognized tax benefits, with corresponding increase to Goodwill, due to current year acquisition.Beneficial impact of US tax rate change, with corresponding detrimental rate change offset in deferred tax assets.

[2] Beneficial impact of US tax rate change, with corresponding detrimental rate change offset in deferred tax assets.