EARNINGS PER SHARE (Schedule of the Computation of Net Income Per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Aug. 31, 2022	Aug. 31, 2021	Aug. 31, 2020
EARNINGS PER SHARE [Abstract]
Net income attributable to PriceSmart, Inc.	$ 104,534	$ 97,963	$ 78,109
Less: Allocation of income to unvested stockholders	(1,245)	(1,282)	(842)
Net income attributable to PriceSmart, Inc. available for distribution	$ 103,289	$ 96,681	$ 77,267
Basic weighted average shares outstanding	30,591	30,403	30,259
Add dilutive effect of performance stock units (two-class method)	9
Diluted average shares outstanding	30,600	30,403	30,259
Basic net income per share	$ 3.38	$ 3.18	$ 2.55
Diluted net income per share	$ 3.38	$ 3.18	$ 2.55