Document and Entity Information	9 Months Ended
	Feb. 29, 2012	Apr. 30, 2012
Entity Registrant Name	RED MOUNTAIN RESOURCES, INC.
Entity Central Index Key	0001483496
Current Fiscal Year End Date	--05-31
Entity Filer Category	Smaller Reporting Company
Trading Symbol	rdmp
Entity Common Stock, Shares Outstanding		0
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Feb. 29, 2012
Document Fiscal Period Focus	Q3
Document Fiscal Year Focus	2012