BALANCE SHEETS (Parenthetical) (USD $)	Jun. 30, 2013	Dec. 31, 2012
Statement Of Financial Position [Abstract]
Trade accounts receivable, less allowance for doubtful accounts	$ 6,000	$ 6,000
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	24,088	24,088
Preferred stock, shares issued
Preferred stock, shares outstanding
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	35,000,000	35,000,000
Common stock, shares issued	28,468,162	28,458,162
Common stock, shares outstanding	28,468,162	28,458,162