Quarterly report pursuant to Section 13 or 15(d)

Cover
- Cover
Financial Statements
Notes to Financial Statements
Accounting Policies
- Basis of Presentation and Significant Accounting Policies (Policies)
Notes Tables
Notes Details

Business (Details)

v3.21.2

Business (Details) $ in Thousands						1 Months Ended			3 Months Ended				9 Months Ended
Business (Details) $ in Thousands	Sep. 29, 2021 USD ($)	Sep. 17, 2021 USD ($) shares	Jul. 30, 2021 USD ($)	Jun. 04, 2021 USD ($) shares	Jun. 11, 2020 USD ($) shares	Aug. 31, 2021 USD ($) shares	Jul. 31, 2021 USD ($)	Jan. 31, 2021 USD ($) shares	Sep. 30, 2021 USD ($)	Jun. 30, 2021 USD ($) shares	Mar. 31, 2021 USD ($) shares	Sep. 30, 2020 USD ($)	Sep. 30, 2021 USD ($) tranche	Sep. 30, 2020 USD ($)	Dec. 31, 2020 USD ($)
Subsequent Event [Line Items]
Cash and cash equivalents									$ 71,506			$ 33,391	$ 71,506	$ 33,391	$ 18,919
Sale of stock (in shares) \| shares											13,971,889
Number of Tranches \| tranche													2
Net loss									17,395			$ 13,459	$ 65,180	47,857
Net cash used in operating activities													53,793	$ 26,164
Accumulated deficit									242,970				242,970		$ 177,790
Warrant
Subsequent Event [Line Items]
Sale of stock (in shares) \| shares								1,676,923			1,676,923
Horizon & Powerscourt Notes \| Notes Payable
Subsequent Event [Line Items]
Principal amount				$ 35,000					35,000	$ 35,000			$ 35,000
Proceeds from debt	$ 5,000		$ 10,000	$ 20,000					$ 15,000	$ 20,000
Horizon & Powerscourt Notes \| Notes Payable \| Warrant
Subsequent Event [Line Items]
Sale of stock (in shares) \| shares				403,844						403,844
Underwritten Public Offering
Subsequent Event [Line Items]
Sale of stock (in shares) \| shares		14,308,878			15,180,000			13,971,889
Net proceeds		$ 29,000			$ 35,400			$ 37,700			$ 37,700
ATM Agreement
Subsequent Event [Line Items]
Sale of stock (in shares) \| shares						2,000,000
Net proceeds						$ 5,300	$ 50,000

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