Annual report pursuant to Section 13 and 15(d)

Segment Disclosures - Geographic Revenue Information (Details)

v3.10.0.1
Segment Disclosures - Geographic Revenue Information (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Segment Reporting Information [Line Items]    
Revenue $ 11,332 $ 7,353
United States    
Segment Reporting Information [Line Items]    
Revenue 7,028 4,958
All Other    
Segment Reporting Information [Line Items]    
Revenue $ 4,304 $ 2,395