Quarterly report pursuant to Section 13 or 15(d)

Entity Level Information - Additional Information (Details)

v3.20.1
Entity Level Information - Additional Information (Details)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 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 51.00% 40.00%
Receivables | Customer Concentration | Customer Two    
Revenues From External Customers And Long Lived Assets [Line Items]    
Concentration risk percentage 13.00% 28.00%
U.S [Member]    
Revenues From External Customers And Long Lived Assets [Line Items]    
Long-lived assets $ 6,102 $ 6,626
Asia Pacific [Member]    
Revenues From External Customers And Long Lived Assets [Line Items]    
Long-lived assets $ 1,347 $ 1,492