Document and Entity Information (USD $)	12 Months Ended
	May 31, 2013	Aug. 26, 2013	Nov. 30, 2012
Document and Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	May 31, 2013
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	FY
Entity Registrant Name	GREYSTONE LOGISTICS, INC.
Entity Central Index Key	0001088413
Current Fiscal Year End Date	--05-31
Entity Filer Category	Smaller Reporting Company
Entity Public Float			$ 4,328,564
Entity Common Stock, Shares Outstanding		26,111,201
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes