Quarterly report pursuant to Section 13 or 15(d)

Entity Level Information - Composition of Revenues (Details)

v3.20.2
Entity Level Information - Composition of Revenues (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Entity Wide Information Revenue From External Customer [Line Items]        
Total revenues $ 21,058 $ 43,747 $ 33,764 $ 70,231
Product Sales        
Entity Wide Information Revenue From External Customer [Line Items]        
Total revenues 21,042 43,609 33,737 69,941
Services        
Entity Wide Information Revenue From External Customer [Line Items]        
Total revenues $ 16 $ 138 $ 27 $ 290