Shareholders' Deficit - Narrative (Details)			1 Months Ended			6 Months Ended	12 Months Ended
	Aug. 05, 2022 USD ($) $ / shares	Apr. 28, 2022 USD ($) shares	Dec. 31, 2023 USD ($) vote $ / shares shares	May 31, 2023 USD ($) $ / shares shares	Apr. 30, 2023 USD ($) $ / shares shares	Jun. 30, 2023 shares	Dec. 31, 2023 USD ($) vote $ / shares shares	Dec. 31, 2022 USD ($) $ / shares shares	Aug. 23, 2023 USD ($)	Aug. 22, 2023 USD ($)	Jan. 18, 2023 $ / shares	Dec. 31, 2021 shares	Dec. 31, 2020 shares	May 22, 2020 $ / shares
Class of Stock [Line Items]
Preferred stock, shares authorized (in shares)			1,000,000				1,000,000	1,000,000
Preferred stock, shares outstanding (in shares)			0				0	0
Preferred stock, shares issued (in shares)			0				0	0
Common stock, shares authorized (in shares)			300,000,000				300,000,000	300,000,000
Common stock, par value (in usd per share) | $ / shares	$ 0.0001		$ 0.0001				$ 0.0001	$ 0.0001			$ 0.0001
Number of votes for each share | vote			1				1
Common stock, shares outstanding (in shares)			199,133,827				199,133,827	82,653,781
Common stock, shares issued (in shares)			199,133,827				199,133,827	82,653,781
Treasury stock | $							$ 633,000	$ 978,000
Warrant outstanding (in shares)			54,359,139				54,359,139	325,000
Convertible Notes
Class of Stock [Line Items]
Issue and sale of shares (in shares)						20,993,417	23,630,937	7,361,602
SEPA
Class of Stock [Line Items]
Authorized value of stock to be sold | $		$ 75,000,000
Each sale aggregate value | $		$ 20,000,000
Share price as percentage of market price		97.00%
Commitment fee for SEPA settled by common stock (in shares)		465,117
Commitment fee for SEPA settled by common stock | $								$ 1,061,000
Funds raised under the ATM | $							$ 35,550,000	$ 14,500,000
ATM
Class of Stock [Line Items]
Offering price (in usd per share) | $ / shares			$ 2.58				$ 2.58	$ 1.94
Authorized value of stock to be sold | $	$ 100,000,000
Funds raised under the ATM | $							$ 38,626,000	$ 92,916,000
Aggregate Offering Price | $									$ 200,000	$ 100,000
Commission on gross sale proceeds	3.00%
Sale of stock, number of shares issued in transaction (in shares)							37,126,137	20,539,603
Public and Private Warrants
Class of Stock [Line Items]
Common stock to be purchased through warrants (in shares)													9,075,000
Public Warrant
Class of Stock [Line Items]
Price of common stock to be purchased through warrants (in usd per share) | $ / shares														$ 11.50
Warrant outstanding (in shares)			7,052,254				7,052,254	7,001,654
Common Stock
Class of Stock [Line Items]
Common stock, shares outstanding (in shares)			199,133,827				199,133,827	82,653,781				53,786,632
Exercise of warrants (in shares)								600
Issuance of common stock under ATM program (in shares)							114,841,813	27,901,205
Commitment fee for SEPA settled by common stock (in shares)							465,117
Common Stock | April 2023 warrants
Class of Stock [Line Items]
Common stock to be purchased through warrants (in shares)					16,000,000
Price of common stock to be purchased through warrants (in usd per share) | $ / shares					$ 3.14
Warrant issuance price (in usd per share) | $ / shares					$ 2.50
Time to expiration					5 years 6 months
Proceeds from issuance of equity transactions | $					$ 40,000,000
Common Stock | April 2023 warrants | Related Party
Class of Stock [Line Items]
Warrant outstanding (in shares)			16,000,000				16,000,000	0
Common Stock | May 2023 warrants
Class of Stock [Line Items]
Common stock to be purchased through warrants (in shares)				3,601,980
Price of common stock to be purchased through warrants (in usd per share) | $ / shares				$ 2.50
Warrant issuance price (in usd per share) | $ / shares				$ 2.221
Time to expiration				5 years
Proceeds from issuance of equity transactions | $				$ 8,000,000
Common Stock | May 2023 warrants | Related Party
Class of Stock [Line Items]
Common stock to be purchased through warrants (in shares)				3,601,980
Warrant outstanding (in shares)			3,601,980				3,601,980	0
Proceeds from issuance of equity transactions | $				$ 8,000,000
Issuance of common stock under ATM program (in shares)				3,601,980
Common Stock | December 2023 warrants | Related Party
Class of Stock [Line Items]
Price of common stock to be purchased through warrants (in usd per share) | $ / shares			$ 1.60				$ 1.60
Warrant outstanding (in shares)			34,482,759				34,482,759	0
Proceeds from issuance of warrants | $			$ 50,000,000
Issuance of common stock under ATM program (in shares)			34,482,759
Common stock to be purchased through each warrant (in shares)			1				1
Common Stock | Public Warrant
Class of Stock [Line Items]
Exercise of warrants (in shares)							0	600