BALANCE SHEETS (Parenthetical) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Current assets:
Accounts receivable, Allowance	$ 30,000	$ 30,000
Stockholders' equity:
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, authorized (in shares)	5,000,000	5,000,000
Preferred stock, issued (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, authorized (in shares)	25,000,000	25,000,000
Common stock, issued (in shares)	7,958,564	7,946,462
Common stock, outstanding (in shares)	7,958,564	7,946,462