Loss Per Share (Details) - USD ($) shares in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Warrant [Member]
Loss Per Share (Details) [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	1.6	1.8
Convertible Preferred Stock [Member] | Series B Preferred Stock [Member]
Loss Per Share (Details) [Line Items]
Convertible Preferred Dividends, Net of Tax	$ 0	$ 0