CONDENSED BALANCE SHEETS (Parenthetical) - $ / shares	Jun. 30, 2019	Dec. 31, 2018
STOCKHOLDERS' EQUITY
Preferred stock, shares par value	$ 1.00	$ 1.00
Preferred stock, shares authorized	4,000,000	4,000,000
Common stock, shares par value	$ .10	$ .10
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	61,479,759	58,582,172
Common stock, shares outstanding	59,079,759	58,582,172
Common stock, held in escrow	2,400,000	2,400,000
Treasury stock, shares par value	$ .10	$ .10
Treasury stock, shares issued	497,587	497,587
10% Convertible Preferred Stock [Member]
STOCKHOLDERS' EQUITY
Convertible Preferred stock, shares authorized	50,000	50,000
Convertible Preferred stock, shares issued	0	0
Convertible Preferred stock, shares outstanding	0	0
Convertible Preferred stock, liquidation	0	0