Quarterly report pursuant to Section 13 or 15(d)

Entity Level Information - Additional Information (Details)

v3.20.2
Entity Level Information - Additional Information (Details)
$ in Thousands
9 Months Ended 12 Months Ended
Sep. 30, 2020
USD ($)
Segment
Dec. 31, 2019
USD ($)
Revenues From External Customers And Long Lived Assets [Line Items]    
Number of reporting segment | Segment 1  
Allowance for credit losses $ 52 $ 52
Receivables | Customer Concentration | Customer One    
Revenues From External Customers And Long Lived Assets [Line Items]    
Concentration risk percentage 24.00% 54.00%
Receivables | Customer Concentration | Customer Two    
Revenues From External Customers And Long Lived Assets [Line Items]    
Concentration risk percentage 12.00% 22.00%
Receivables | Customer Concentration | Customer Three    
Revenues From External Customers And Long Lived Assets [Line Items]    
Concentration risk percentage 11.00% 11.00%
U.S [Member]    
Revenues From External Customers And Long Lived Assets [Line Items]    
Long-lived assets $ 4,828 $ 6,626
Asia Pacific [Member]    
Revenues From External Customers And Long Lived Assets [Line Items]    
Long-lived assets $ 1,096 $ 1,492