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, 2024	Aug. 31, 2023	Aug. 31, 2022
Earnings Per Share [Abstract]
Net income attributable to PriceSmart, Inc.	$ 138,875	$ 109,205	$ 104,534
Less: Allocation of income to unvested stockholders	(1,759)	(1,311)	(1,245)
Net income attributable to PriceSmart, Inc. available for distribution (in shares)	$ 137,116	$ 107,894	$ 103,289
Basic weighted average shares outstanding (in shares)	30,032	30,763	30,591
Add dilutive effect of performance stock units (two-class method) (in shares)	0	23	9
Diluted average shares outstanding (in shares)	30,032	30,786	30,600
Basic net income per share (in dollars per share)	$ 4.57	$ 3.51	$ 3.38
Diluted net income per share (in dollars per share)	$ 4.57	$ 3.50	$ 3.38