Stockholders' Equity - Schedule of Warrants Outstanding (Details) - $ / shares shares in Thousands	Dec. 31, 2020	Apr. 21, 2020	Oct. 31, 2018
Class Of Warrant Or Right [Line Items]
Exercise Price		$ 2.40	$ 6.00
Common Stock Warrant One
Class Of Warrant Or Right [Line Items]
Number of Shares	33
Exercise Price	$ 47.00
Expiration	Jan. 31, 2023
Common Stock Warrant Two
Class Of Warrant Or Right [Line Items]
Number of Shares	1,846
Exercise Price	$ 2.40
Expiration	Oct. 31, 2023