Subsequent Events (Details) - USD ($) $ / shares in Units, $ in Millions			2 Months Ended
	Jan. 27, 2021	Nov. 16, 2020	Mar. 03, 2021	Feb. 28, 2021	Jan. 26, 2021	Dec. 31, 2020	Dec. 31, 2019	Oct. 10, 2018	Sep. 11, 2017
Subsequent Event
Preferred Stock, Convertible, Conversion Price, Decrease	$ 1.50
Common Stock, Shares, Outstanding						29,249,925	16,806,430
Preferred Stock, Shares Outstanding						3,973	7,638
Class of Warrant or Right, Number of Securities Called by Warrants or Rights								13,672,173
Warrants Outstanding						17,999,999
Exercise Price		$ 1.38
Exercise Price 0.69 [Member]
Subsequent Event
Exercise Price		$ 0.69
Series A Preferred Stock [Member]
Subsequent Event
Preferred Stock Conversion Price Per Share									$ 0.54
Preferred Stock, Shares Outstanding						0
Subsequent Event [Member]
Subsequent Event
Common stock issued upon conversion				8,996,768
Proceeds from Issuance of Common Stock			$ 63.8
Stock Issued During Period, Shares, New Issues			76,300,000
Proceeds from Warrant Exercises			$ 8.0	$ 8.0
Class of Warrant or Right, Number of Securities Called by Warrants or Rights				11,655,747
Subsequent Event [Member] | Series A Preferred Stock [Member]
Subsequent Event
Maximum percentage	9.99%				4.99%
Preferred Stock Conversion Price Per Share	$ 18.90
Preferred Stock, Convertible, Conversion Price, Decrease	$ 1.50
Common stock issued upon conversion				9,000,000
Preferred Stock, Shares Outstanding				120,000
Subsequent Event [Member] | B Riley Securities Inc [Member]
Subsequent Event
Stock Issued During Period, Shares, New Issues			76,300,000
Subsequent Event [Member] | B Riley Securities Inc [Member] | Series A Preferred Stock [Member]
Subsequent Event
Effective Period For Change in Beneficial Ownership	61 days