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| Stockholders' Equity Note Disclosure [Text Block] |
3. STOCKHOLDERS’ EQUITY
August 2014 Underwritten Offering
On August 20, 2014, the Company completed an underwritten public offering of 3,583,333 shares of its common stock and warrants to purchase 3,833,333 shares of its common stock at an exercise price of $4.68 per share, expiring on August 20, 2019 (the “August 2014 Underwritten Offering”). The offering price was $3.75 per common share and $.01 per warrant and resulted in gross proceeds of $13,475,832 and net proceeds of $11,877,143 after deducting transaction costs. The underwriter received a weighted average discount of approximately 6.4 percent on the underwritten securities. The underwriting discount, along with other legal and accounting costs associated with the offering, including those previously included as deferred issuance costs, totaling $1,598,689, was recorded as a reduction of the gross proceeds received. The underwriter also received warrants to purchase 96,988 shares of common stock at an exercise price of $4.6875 as compensation pursuant to the underwriting agreement. The fair value of the underwriter warrants was approximately $275,000 at issuance and had no impact on stockholders’ equity. The underwriter warrants were valued with the Black-Scholes option pricing model and applied assumptions that considered, among other variables, the fair value of the underlying stock, risk-free interest rate, volatility, expected life and dividend rates in estimating fair value for the warrants. Assumptions used were generally consistent with those disclosed for stock-based compensation (see Note 5).
The warrant exercise price for all warrants issued as part of the August 2014 Underwritten Offering and the common stock issuable pursuant to such warrants is subject to adjustment only for stock dividends, stock splits and similar capital reorganizations so that the rights of the warrant holders after such events will be equivalent to the rights of the warrant holders prior to such events. These warrants are considered derivative instruments because the agreements contain a certain type of cash settlement feature; therefore, the Company determined that these warrants meet the requirements for classification as a liability.
In conjunction with the August 2014 Underwritten Offering, the Company’s common stock and the warrants issued in the offering were listed on the NASDAQ Capital Market.
August 2014 Debenture Tender and Exchange
In conjunction with the August 2014 Underwritten Offering, all of the holders of the 8% convertible debentures issued in February 2014 elected to participate in the offering of common stock and warrants at the combined offering price of $3.76 per share. As a result, the $4,000,000 principal amount of debentures and accrued interest of $172,435 was extinguished in exchange for 1,109,690 shares of the Company’s common stock and warrants to purchase 1,109,690 shares of common stock at $4.68 per share. All warrants to purchase common stock issued with the convertible debentures expired upon the extinguishment of the debentures.
Common Stock Warrants
The following table summarizes information with regard to outstanding warrants to purchase common stock as of September 30, 2015.
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