Subsequent Events (Details) - USD ($) $ / shares in Units, shares in Millions	Oct. 25, 2021	Sep. 30, 2021	Dec. 31, 2020
Subsequent Event [Line Items]
Principal amount		$ 417,000	$ 565,000
Convertible Debt | Convertible Debenture | YA II PN, Ltd | Subsequent Event
Subsequent Event [Line Items]
Principal amount	$ 75,000,000
Debt instrument, convertible, conversion price (in dollars per share)	$ 1.88
Shares issued upon conversion of debt (in shares)	39.9