Document And Entity Information	6 Months Ended
	Jun. 30, 2011
Document and Entity Information [Abstract]
Entity Registrant Name	TEXAS VANGUARD OIL CO
Document Type	10-Q
Current Fiscal Year End Date	--12-31
Entity Common Stock, Shares Outstanding	1,416,587
Amendment Flag	false
Entity Central Index Key	0000315261
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Smaller Reporting Company
Entity Well-known Seasoned Issuer	No
Document Period End Date	Jun. 30, 2011
Document Fiscal Year Focus	2011
Document Fiscal Period Focus	Q2