Stockholders' Equity and Derivative Liability - Warrants - Series C Preferred Stock Issuances (Details)		3 Months Ended
	Jul. 03, 2018 $ / shares shares	Mar. 31, 2022 $ / shares shares	Mar. 31, 2021 shares	Dec. 31, 2021 $ / shares shares
Class of Stock [Line Items]
Preferred shares converted into common stock (in shares)		46	92
Series C
Class of Stock [Line Items]
Convertible preferred stock, shares issued (in shares)		1,801		1,806
Issuance of common stock, net (in shares)	10,826
Convertible preferred stock, par value (in dollars per share) | $ / shares	$ 1,000	$ 1,000		$ 1,000
Convertible preferred stock, shares outstanding (in shares)		1,801		1,806
Stock issued as a result of conversion (in shares)		5	10
Conversion ratio	1.55
Preferred Stock | Series C
Class of Stock [Line Items]
Convertible preferred stock, shares issued (in shares)	1
Warrants
Class of Stock [Line Items]
Warrants issued (in shares)	88,928