Disclosure of Compensation Related Costs, Share-based Payments [Text Block] | NOTE 4 - Stock-Based Compensation Three Months Ended Nine Months Ended September 30, September 30, 2015 2014 2015 2014 Cost of service revenues $ 5,792 $ 10,052 $ 20,726 $ 30,316 Research and development 6,886 7,680 24,066 26,165 Sales and marketing 707 2,290 1,164 7,026 General and administrative 28,422 19,020 72,100 39,595 Total stock-based compensation $ 41,807 $ 39,042 $ 118,056 $ 103,102 Stock options issued under the Company’s long-term incentive plans are granted with an exercise price equal to but no less than the market price of the Company’s stock at the date of grant and expire up to ten years from the date of grant. These options generally vest over a three or four-year period from the date of grant. As of September 30, 2015, there was $ 384,055 3.06 The fair value of stock options granted was determined on the grant date using assumptions for risk free interest rate, the expected term, expected volatility, and expected dividend yield. The risk free interest rate is based on U.S. Treasury zero-coupon yield curve over the expected term of the option. The expected term assumption is determined using the weighted average midpoint between the vesting and expiration term for all individuals within the grant. The Company estimated its expected volatility using its own historical stock prices. The Company’s model includes a zero dividend yield assumption, as the Company has not historically paid nor does it anticipate paying dividends on its common stock. The Company’s model does not include a discount for post-vesting restrictions, as the Company has not issued awards with such restrictions. The periodic expense is then determined based on the valuation of the options, and at that time an estimated forfeiture rate is used to reduce the expense recorded. The Company’s estimate of pre-vesting forfeitures is primarily based on the Company’s historical experience and is adjusted to reflect actual forfeitures as the options vest. Three Months Ended Nine Months Ended September 30, September 30, 2015 2014 2015 2014 Risk free interest rate 1.74 % 1.84 % 1.70 % 1.80 % Expected term (years) 6 5.9 6 5.9 Expected volatility 60.86 % 64.43 % 61.10 % 64.60 % Expected dividend yield - - - - Weighted Weighted Average Average Remaining Number of Exercise Contractual Shares Price Term Options outstanding at January 1, 2015 404,612 $ 10.03 Granted 131,142 2.52 Exercised - Cancelled/Forfeited (25,814) (7.65) Expired (29,693) (13.84) Options outstanding at September 30, 2015 480,247 7.87 6.98 Options exercisable at September 30, 2015 220,239 13.05 4.28 The weighted-average grant-date fair value of options granted during the three months ended September 30, 2015 and 2014 was $ 159,993 393,071 188,917 434,438 |