Document and Entity Information	3 Months Ended
	Dec. 31, 2011	Feb. 14, 2012
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, 2011
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		1,964,068
Document Fiscal Period Focus	Q1
Document Fiscal Year Focus	2012