Shareholders' Equity
 12 Months Ended
Dec. 31, 2021
Shareholders' Equity [Abstract]  
Shareholders' Equity Note 13 – Shareholders’ Equity  Preferred Stock - Series B Convertible Preferred Stock (“the Preferred Stock – Series B”)  The Company has designated 10,000 shares of the Company’s preferred stock as Preferred Stock – Series B at a stated value of $1,000 per share. The Preferred Stock – Series B was initially convertible into common stock at a conversion price of $0.75 per share, subject to adjustment if the Company conducts an equity offering priced below that amount. Pursuant to this provision, the conversion price was reduced to $0.3022 per share in December 2019. At the current conversion price, the Series B Preferred Stock is convertible into 18,726,009 shares of the Company common stock and votes on an as converted basis with the common stock. The holders of the Preferred Stock – Series B are not entitled to receive dividends unless the Company’s Board of Directors declare a dividend for holders of the Company’s common stock and then the dividend shall be equal to the amount that such holder would have been entitled to receive if the holder converted its Preferred Stock – Series B into shares of the Company’s common stock. In the event of a liquidation, dissolution, or winding up of the Company, the Preferred Stock – Series B is entitled to receive liquidation preference before the Common Stock. The Company may at its option redeem the Preferred Stock – Series B by providing the required notice to the holders of the Preferred Stock – Series B and paying an amount equal to $1,000 multiplied by the number of shares for all of such holder’s shares of outstanding Preferred Stock – Series B to be redeemed. As of December 31, 2021 and 2020, there were 5,659 shares of Preferred Stock – Series B issued and outstanding.  Common Stock Common shares issued due to option and warrant exercises, vesting of restricted stock units and public offering of common shares (dollar amounts in thousands): Twelve Months Ended December 31 2021 2020Shares issued due to Options exercised 446,551 -Proceeds $ 725 $ - Shares issued due to Warrants exercised(1) 3,343,660 5,364,997Proceeds $ 5,652 $ 40 Shares issued due to Restricted Stock Unit Vesting 16,667 -Proceeds $ - - Pursuant to ATM Financing 233,793 -Proceeds $ 183 -(1)A total of 3,678,712 warrants to purchase common share were exercised, and 335,052 common shares were surrendered to the Company pursuant to cashless exercise provisions. Equity Issuances On June 10, 2020, the Company filed a prospectus supplement to update and amend the aggregate amount of shares it may sell pursuant to the At Market Offering Agreement, dated November 22, 2019, as amended from time to time, between the Company and H.C. Wainwright & Co., LLC. During the year ended December 31, 2020, the Company raised $9.8 million, net of offering expenses, through the sale of shares under the ATM facility which represented the remaining amount available under the facility. On November 18, 2021 the Company entered into an ATM offering agreement with H.C. Wainwright & Co., LLC, or Wainwright, relating to sales of shares of its common stock under a new ATM facility. On November 18, 2021 the Company also filed a prospectus supplement to allow the sale of shares of its common stock having an aggregate offering price of up to $10.0 million under the new ATM facility. During the year ended December 31, 2021, the Company raised $0.2 million, net of offering expenses, through the sale of shares under the new ATM facility.