Note 1: Oil and Gas Properties	6 Months Ended
Note 1: Oil and Gas Properties	Jun. 30, 2013
Oil and Gas Exploration and Production Industries Disclosures [Abstract]
Oil and Gas Exploration and Production Industries Disclosures [Text Block]	Note 1: Oil and Gas Properties Texas Vanguard Oil Company (the “Company”) follows the "successful efforts" method of accounting for oil and gas exploration and production operations. Accordingly, costs incurred in the acquisition and exploratory drilling of oil and gas properties are initially capitalized and either subsequently expensed if the properties are determined not to have proved reserves, or reclassified as a proven property if proved reserves are discovered. Costs of drilling development wells are capitalized. Geological, geophysical, carrying and production costs are charged to expense as incurred. The Company performs a periodic review for impairment of proved properties. The Company determines if impairment has occurred through either adverse changes or as a result of its periodic review for impairment. Upon abandonment of properties, the reserves are deemed fully depleted and any unamortized costs are recorded in the statement of income under impairment expense. Upon the sale of oil and gas reserves in place, costs less accumulated amortization of such property are removed from the accounts and resulting gain or loss on sale is reflected in operations. Impairment of unproved properties is assessed periodically and any impairment in value is currently charged to expense. Loss is recognized to the extent that such impairment is indicated. When an entire interest in an unproved property is sold, gain or loss is recognized, taking into consideration any recorded impairment. Depreciation, depletion and amortization of proved oil and gas property costs, including related equipment and facilities, are provided using the units-of-production method.

TEXAS VANGUARD OIL CO 10-Q