Document and Entity Information (USD $)	3 Months Ended
	Dec. 31, 2011	Feb. 14, 2012	Sep. 30, 2010
Document And Entity Information
Entity Registrant Name	MEXCO ENERGY CORPORATION
Entity Central Index Key	0000066418
Document Type	10-Q
Document Period End Date	Dec. 31, 2011
Amendment Flag	false
Current Fiscal Year End Date	--03-31
Is Entity a Well-known Seasoned Issuer?	No
Is Entity a Voluntary Filer?	No
Is Entity's Reporting Status Current?	Yes
Entity Filer Category	Smaller Reporting Company
Entity Public Float			$ 4,635,410
Entity Common Stock, Shares Outstanding		2,025,949
Document Fiscal Period Focus	Q3
Document Fiscal Year Focus	2011