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13. Subsequent Events | 12 Months Ended
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Dec. 31, 2022
Subsequent Events [Abstract] |
13. Subsequent Events | 13. Subsequent Events On March 30, 2023, the Company entered into a definitive securities purchase agreement with a certain institutional investor under its shelf registration statement for the purchase and sale of 1,557,632 shares of the Company’s common stock (or pre-funded common stock warrants) at a purchase price of $3.21 per share of common stock (or pre-funded common stock warrants) (the “Registered Direct Offering”). Additionally, in a concurrent private placement, the Company issued to the investor unregistered warrants to purchase up to 1,947,040 shares of its common stock (together with the Registered Direct Offering, the “March 2023 Offering”). The aggregate gross proceeds from the March 2023 Offering are approximately $5 million before deducting placement fees and other offering expenses.

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- Definition The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 855 -URI https://asc.fasb.org/topic&trid=2122774 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 855 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=6842918&loc=SL6314017-165662 + Details
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