EARNINGS PER SHARE (Schedule of the Computation of Net Income Per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Nov. 30, 2021	Nov. 30, 2020
EARNINGS PER SHARE [Abstract]
Net income attributable to PriceSmart, Inc.	$ 30,511	$ 27,737
Less: Allocation of income to unvested stockholders	(560)	(459)
Net income attributable to PriceSmart, Inc. per share available for distribution	$ 29,951	$ 27,278
Basic weighted average shares outstanding	30,551	30,398
Add dilutive effect of performance stock units (two-class method)	52	22
Diluted average shares outstanding	30,603	30,420
Basic net income per share	$ 0.98	$ 0.90
Diluted net income per share	$ 0.98	$ 0.90