Related Party Transactions (Details) - USD ($)				1 Months Ended	2 Months Ended	12 Months Ended
	Oct. 29, 2021	Sep. 30, 2021	Sep. 22, 2021	Sep. 30, 2021	Apr. 09, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Mar. 31, 2018
Related Party Transaction [Line Items]
Share price (dollars per share)						$ 5.22	$ 7.68
Proceeds from issuance of common and preferred shares, net						$ 42,880,000	$ 359,000	$ 1,458,000
September 2021 Securities Purchase Agreement | Series A Preferred Stock
Related Party Transaction [Line Items]
Sale of stock (in shares)	1,318,182
Affiliated Entity | Convertible Note Purchases
Related Party Transaction [Line Items]
Shares issued (shares)			5,428,699
Share price (dollars per share)			$ 5.81
Extinguishment of Convertible Senior Notes through issuance of common stock						31,500,000
Affiliated Entity | Convertible Note Purchases | Foundation
Related Party Transaction [Line Items]
Aggregate principal amount						$ 42,000,000		$ 12,000,000	$ 30,000,000
Affiliated Entity | September 2021 Securities Purchase Agreement
Related Party Transaction [Line Items]
Common stock issuable upon conversion of the Series A Preferred Stock (shares)						3,954,546
Affiliated Entity | September 2021 Securities Purchase Agreement | Series A Preferred Stock
Related Party Transaction [Line Items]
Sale of stock (in shares)				2,636,364
Aggregate purchase price						$ 30,500,000
Common stock issuable upon conversion of the Series A Preferred Stock (shares)						3,954,546
Affiliated Entity | December 2020 Securities Purchase Agreement
Related Party Transaction [Line Items]
Sale of stock (in shares)						201,820
Agreement to purchase shares (in shares)							32,000,000
Proceeds from issuance of common and preferred shares, net		$ 500,000			$ 21,300,000	$ 1,500,000