Stockholders' Equity	12 Months Ended
Dec. 31, 2018
Stockholders' Equity Note [Abstract]
Stockholders' Equity	Preferred Stock The Company’s Certificate of Incorporation authorizes the Company to issue up to 10,000,000 shares of preferred stock, $0.001 par value per share. Under the terms of the Company’s Certificate of Incorporation, the board of directors is authorized, subject to any limitations prescribed by law, without stockholder approval, to issue such shares of preferred stock in one or more series. Each such series of preferred stock shall have such rights, preferences, privileges and restrictions, including voting rights, dividend rights, conversion rights, redemption privileges and liquidation preferences, as shall be determined by the board of directors. In November 2004, the Company filed a certificate of designation designating 2,045,714 shares of the Company’s preferred stock as shares of Series A Convertible Preferred Stock, which shares were later issued. All of the shares of Series A Convertible Preferred Stock that were issued was converted into common stock and may not be reissued. Accordingly, as of December 31, 2018, there were 7,954,286 undesignated shares of preferred stock remaining available for issuance. There were no issuances of preferred stock during the year ended December 31, 2018. Common Stock The Company is authorized to issue 110,000,000 shares of common stock, $.001 par value per share. As of December 31, 2018, there were 84,112,446 shares issued and outstanding (including 300,000 restricted shares not vested). Common Stock Issuances - Employee Stock Option Exercises Shares of common stock issued as a result of stock option exercises and realized gross proceeds for the year ended December 31, 2018 were 100,000 and $43,900, respectively. See Note 16 for additional information regarding stock option plans.

Stockholders' Equity

12 Months Ended

Dec. 31, 2018

Stockholders' Equity Note [Abstract]

Preferred Stock

The Company’s Certificate of Incorporation authorizes the Company to issue up to 10,000,000 shares of preferred stock, $0.001 par value per share. Under the terms of the Company’s Certificate of Incorporation, the board of directors is authorized, subject to any limitations prescribed by law, without stockholder approval, to issue such shares of preferred stock in one or more series. Each such series of preferred stock shall have such rights, preferences, privileges and restrictions, including voting rights, dividend rights, conversion rights, redemption privileges and liquidation preferences, as shall be determined by the board of directors. In November 2004, the Company filed a certificate of designation designating 2,045,714 shares of the Company’s preferred stock as shares of Series A Convertible Preferred Stock, which shares were later issued. All of the shares of Series A Convertible Preferred Stock that were issued was converted into common stock and may not be reissued. Accordingly, as of December 31, 2018, there were 7,954,286 undesignated shares of preferred stock remaining available for issuance. There were no issuances of preferred stock during the year ended December 31, 2018.

Common Stock

The Company is authorized to issue 110,000,000 shares of common stock, $.001 par value per share. As of December 31, 2018, there were 84,112,446 shares issued and outstanding (including 300,000 restricted shares not vested).

Common Stock Issuances - Employee Stock Option Exercises

Shares of common stock issued as a result of stock option exercises and realized gross proceeds for the year ended December 31, 2018 were 100,000 and $43,900, respectively. See Note 16 for additional information regarding stock option plans.