CONDENSED BALANCE SHEETS (Parenthetical) (USD $)	Mar. 31, 2012	Dec. 31, 2011
Accounts receivable, allowance for doubtful accounts	$ 100,000	$ 40,000
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares issued	17,645,882	17,088,396
Common stock, shares outstanding	17,645,882	17,088,396