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Stock-Based Compensation and Warrants - Stock Warrants (Details) - USD ($)				1 Months Ended	2 Months Ended		12 Months Ended
	Oct. 15, 2018	Oct. 10, 2018	Oct. 10, 2014	Nov. 18, 2016	Mar. 03, 2021	Feb. 28, 2021	Dec. 31, 2020	Dec. 31, 2019	Nov. 16, 2020	Nov. 15, 2020	Oct. 31, 2018	Dec. 26, 2017
Equity, Class of Treasury Stock
Proceeds from "at-the-market" stock issuance	$ 18,600,000						$ 3,359,000	$ 0
Warrants Not Settleable in Cash, Fair Value Disclosure												$ 9,000
Effect of Warrant exercise price adjustment							$ 880,000	$ 0
Class of Warrant or Right, Number of Securities Called by Warrants or Rights		13,672,173
Preferred Stock, Par or Stated Value Per Share							$ 0.0001	$ 0.0001
Class of Warrant or Right, Exercise Price of Warrants or Rights		$ 1.38							$ 0.69	$ 1.38	$ 1.38
Subsequent Event [Member]
Equity, Class of Treasury Stock
Stock Issued During Period, Shares, New Issues					76,300,000
Proceeds from Issuance of Common Stock					$ 63,800,000
Class of Warrant or Right, Number of Securities Called by Warrants or Rights						11,655,747
Cash proceeds from exercise of warrants					$ 8,000,000	$ 8,000,000
Series B Preferred Stock [Member]
Equity, Class of Treasury Stock
Preferred Stock Conversion Price Per Share	$ 1.15
Stock Issued During Period, Value, Issued for Services	$ 1,000
Preferred Stock, Par or Stated Value Per Share	$ 1,000
Conversion of Stock, Shares Converted	13,672,173
Class of Warrant or Right, Exercise Price of Warrants or Rights											$ 1.38
IPO [Member]
Equity, Class of Treasury Stock
Warrants Not Settleable in Cash, Fair Value Disclosure				$ 15,700,000				$ 100,000,000
Stock Issued During Period, Shares, New Issues				714,286
Class of Warrant or Right, Number of Securities Called by Warrants or Rights				1,428,571
Sale of Stock, Price Per Share				$ 35.00
IPO [Member] \| Series A Warrants [Member]
Equity, Class of Treasury Stock
Class of Warrant or Right, Exercise Price of Warrants or Rights				50.05
IPO [Member] \| Series B Warrants [Member]
Equity, Class of Treasury Stock
Class of Warrant or Right, Exercise Price of Warrants or Rights				$ 60.20
IPO [Member] \| Series A [Member]
Equity, Class of Treasury Stock
Sale of Stock, Number of Shares Issued in Transaction		2,520,000
Share Price		$ 1.15
IPO [Member] \| Series B [Member]
Equity, Class of Treasury Stock
Sale of Stock, Number of Shares Issued in Transaction		15,723
Share Price		$ 1,000
Over-Allotment Option [Member]
Equity, Class of Treasury Stock
Class of Warrant or Right, Number of Securities Called by Warrants or Rights		2,428,825
Issue of warrants to purchase common stock		1,807,826
Over-Allotment Option [Member] \| Series B Preferred Stock [Member]
Equity, Class of Treasury Stock
Stock Issued During Period, Shares, New Issues		2,428,825
Class of Warrant or Right, Number of Securities Called by Warrants or Rights		2,428,825
Issue of warrants to purchase common stock		1,807,826
Series A Warrants [Member]
Equity, Class of Treasury Stock
Proceeds from Issuance of Common Stock			$ 19,100,000
Sale of Stock, Number of Shares Issued in Transaction			14,059,616
Share Based Compensation Arrangement By Share Based Payment Award Warrants Vested and Expected To Vest Outstanding Number			61.25
Sale of Stock, Price Per Share			$ 1.47
Issue of warrants to purchase common stock			0.50
Warrant [Member]
Equity, Class of Treasury Stock
Share Based Compensation Arrangement By Share Based Payment Award Non Option Equity Instruments Warrants Exercisable Number												714
Warrant [Member] \| Series B Preferred Stock [Member]
Equity, Class of Treasury Stock
Class of Warrant or Right, Number of Securities Called by Warrants or Rights	13,672,173