Subsequent Events	12 Months Ended
Dec. 31, 2020
Subsequent Events [Abstract]
Subsequent Events	13. Subsequent Events At the Market Offering Program In January and February 2021, the Company sold 197,949 shares for proceeds net of discounts and offering costs of $1.6 million under the Equity Distribution Agreement. Related party transaction On February 12, 2021, the Company entered into a Securities Purchase Agreement (the “Purchase Agreement”), with Eshelman Ventures relating to the issuance and sale (the “Offering”) of 2,875,000 shares of the Company’s common stock at a price per share of $7.29. The Offering closed on February 18, 2021 and the Company received aggregate gross proceeds from the Offering of approximately $21.0 million. Eshelman Ventures is an entity wholly owned by the Company’s chairman of the board.

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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