Annual report pursuant to Section 13 and 15(d)

Related Party Transactions - Additional Information (Details)

v3.20.1
Related Party Transactions - Additional Information (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Investor and Holder of August 2016 Series A Warrants    
Related Party Transaction [Line Items]    
Revenue from related party $ 0 $ 797
BRI    
Related Party Transaction [Line Items]    
Consulting fees $ 0 $ 200