Warrants and Derivative Liabilities - Schedule of Input and Valuation Techniques Used to Value Warrant Liabilities (Details)	Jun. 30, 2022 $ / shares	Apr. 01, 2022 $ / shares	Dec. 31, 2021 $ / shares
2018 Emerald Financing Warrants
Class of Warrant or Right [Line Items]
Underlying common stock price (in dollars per share)	$ 0.04		$ 0.05
Dividend yield | 2022 Common Stock Warrants to Service Provider
Class of Warrant or Right [Line Items]
Warrants and rights outstanding measurement input		0
Dividend yield | 2018 Emerald Financing Warrants
Class of Warrant or Right [Line Items]
Warrants and rights outstanding measurement input	0		0
Volatility factor | 2022 Common Stock Warrants to Service Provider
Class of Warrant or Right [Line Items]
Warrants and rights outstanding measurement input		1.185
Volatility factor | 2018 Emerald Financing Warrants
Class of Warrant or Right [Line Items]
Warrants and rights outstanding measurement input	0.990		1.265
Risk-free interest rate | 2022 Common Stock Warrants to Service Provider
Class of Warrant or Right [Line Items]
Warrants and rights outstanding measurement input		0.0192
Risk-free interest rate | 2018 Emerald Financing Warrants
Class of Warrant or Right [Line Items]
Warrants and rights outstanding measurement input	0.0259		0.0043
Expected term (years) | 2022 Common Stock Warrants to Service Provider
Class of Warrant or Right [Line Items]
Expected term (years)		1 year 3 months 7 days
Expected term (years) | 2018 Emerald Financing Warrants
Class of Warrant or Right [Line Items]
Expected term (years)	7 months 17 days		1 year 1 month 17 days
Underlying common stock price | 2022 Common Stock Warrants to Service Provider
Class of Warrant or Right [Line Items]
Underlying common stock price (in dollars per share)		$ 0.04