Subsequent Events	12 Months Ended
Dec. 31, 2021
Subsequent Events
Subsequent Events	18. Subsequent Events Exchange Agreement On January 20, 2022, Exchange Warrants to purchase 1,000,000 shares were net exercised, resulting in the issuance of 999,984 shares of common stock. All of the Exchange Warrants were exercised in full. See Note 10 for further details. Public Offering On January 20, 2022, warrant holders exercised 760,870 of the Pre-Funded Warrants and were issued 760,870 shares of common stock, leaving 869,566 remaining Pre-Funded Warrants unexercised. See Note 10 for further details.

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.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-URI http://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 http://asc.fasb.org/extlink&oid=6842918&loc=SL6314017-165662

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