Balance Sheets (Parenthetical) (USD $)	Mar. 31, 2012	Dec. 31, 2011
Balance Sheets [Abstract]
Trade accounts receivable, 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	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	35,000,000	35,000,000
Common stock, shares issued	21,208,162	21,208,162
Common stock, shares outstanding	21,208,162	21,208,162