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Private Placements and Public Offering
 3 Months Ended
Mar. 31, 2023
Equity [Abstract]  
Private Placements and Public Offering Public OfferingIn January 2021, the Company entered into an Equity Distribution Agreement with Canaccord Genuity LLC (the “Agent”), pursuant to which the Company may offer and sell, from time to time, through or to the Agent, up to $40.0 million of shares of its common stock (the “ATM Offering”). In January 2021, the Company sold 1,516,073 shares of common stock, at an average price of $20.11 per share, for net proceeds of $29.4 million, after deducting underwriter fees and discounts, and other offering fees, pursuant to the ATM Offering. There were no ATM transactions in 2022. In March 2023, the Company’s Board of Directors (BOD) approved the issuance of up to the remaining $9.5 million worth of shares under this ATM Offering. During the quarter ended March 31, 2023 the Company sold 858,098 shares of common stock, at an average price of $0.62 per share, for net proceeds of $0.5 million, after deducting underwriter fees and discounts. As of March 31, 2023, there were approximately $9 million of shares remaining available for sale under this ATM Offering.