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RELATED-PARTY TRANSACTIONS (Details)		12 Months Ended
RELATED-PARTY TRANSACTIONS (Details)	Dec. 12, 2013 item	Aug. 31, 2025 USD ($)	Aug. 31, 2024 USD ($)	Aug. 31, 2023 USD ($)	Feb. 03, 2023 USD ($)	Aug. 31, 2022	Jul. 14, 2017 ft²	Jul. 14, 2017 m²	Dec. 12, 2013 ft²	Dec. 12, 2013 m²
Refused Compensation \| Founder And Chairman Of The Board
Related Party Transaction [Line Items]
Amount of unrecorded hypothetical liability					$ 5,100,000
Edgar Zurcher Law Firm \| Rental Income \| Director
Related Party Transaction [Line Items]
Revenues		$ 708,000	$ 632,000	$ 718,000
Edgar Zurcher Law Firm \| Product Purchases
Related Party Transaction [Line Items]
Related party transaction, purchases from related party		$ 1,700,000	1,700,000	1,900,000
Edgar Zurcher Law Firm \| Payless ShoeSource Holdings, Ltd.
Related Party Transaction [Line Items]
Ownership percentage in unaffiliated entity		40.00%
Price Philanthropies Foundation \| Related Party
Related Party Transaction [Line Items]
Revenues		$ 337,000	336,000	1,000,000
PriceSmart Foundation \| Related Party
Related Party Transaction [Line Items]
Related party transaction, purchases from related party			$ 150,000
GolfPark Plaza, S.A. \| Corporate Joint Venture \| Panama
Related Party Transaction [Line Items]
Area of property							2,992	278	17,976	1,670
Operating leases, term	15 years
Number of renewal options \| item	3
Renewal term	5 years		5 years			5 years
Operating leases, rent expense, net		140,000	$ 140,000	$ 140,000
La Jolla Aviation \| Related Party
Related Party Transaction [Line Items]
Travel and entertainment expense		$ 210,000	$ 400,000