Document and Entity Information	3 Months Ended
	Dec. 31, 2012	Feb. 14, 2013
Document And Entity Information
Entity Registrant Name	CORNING NATURAL GAS CORP
Entity Central Index Key	0000024751
Document Type	10-Q
Document Period End Date	Dec. 31, 2012
Amendment Flag	false
Current Fiscal Year End Date	--09-30
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 Common Stock, Shares Outstanding		2,236,117
Document Fiscal Period Focus	Q1
Document Fiscal Year Focus	2013