Balance Sheets (Parenthetical) - $ / shares	Mar. 31, 2017	Dec. 31, 2016
Statement of Financial Position [Abstract]
Common stock, par value	$ 2.00	$ 2.00
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares issued	23,355,457	23,354,457
Common stock, shares outstanding	23,355,457	23,354,457