Annual report pursuant to Section 13 and 15(d)

Segment Disclosures - Schedule of Geographic Revenue Information (Details)

v3.20.4
Segment Disclosures - Schedule of Geographic Revenue Information (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Segment Reporting Information [Line Items]    
Revenue $ 8,882 $ 13,917
United States    
Segment Reporting Information [Line Items]    
Revenue 5,945 9,071
All Other    
Segment Reporting Information [Line Items]    
Revenue $ 2,937 $ 4,846