Document And Entity Information - USD ($)	12 Months Ended
	Aug. 31, 2015	Oct. 23, 2015	Feb. 28, 2015
DEI [Abstract]
Entity Registrant Name	PRICESMART INC
Entity Central Index Key	0001041803
Current Fiscal Year End Date	--08-31
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	FY
Document Type	10-K
Amendment Flag	false
Document Period End Date	Aug. 31, 2015
Entity Common Stock, Shares Outstanding		30,184,584
Entity Public Float			$ 1,670,793,360