CONDENSED BALANCE SHEETS (UNAUDITED) (Parenthetical) (USD $)	Mar. 31, 2013	Dec. 31, 2012
Common Stock, Par Value (in dollars per share)	$ 2.50	$ 2.50
Authorized (in shares)	4,000,000	4,000,000
Outstanding (in shares)	2,339,139	2,339,139