Condensed Balance Sheets (Parenthetical) (USD $)	Sep. 30, 2012	Dec. 31, 2011
Condensed Balance Sheets [Abstract]
Allowance on trade receivables	$ 60,000	$ 51,000
Accumulated amortization on intangible assets	$ 469,066	$ 427,454
Preferred stock, par value	$ 0.10	$ 0.10
Preferred stock, shares authorized	250,000	250,000
Preferred stock, shares issued	0	0
Common stock, par value	$ 0.10	$ 0.10
Common stock, shares authorized	4,750,000	4,750,000
Common stock, shares issued	1,990,287	1,984,587
Common stock, shares outstanding	1,990,287	1,984,587