Quarterly report pursuant to Section 13 or 15(d)

Revenue - Additional Information (Details)

v3.20.1
Revenue - Additional Information (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2020
USD ($)
Customer
Mar. 31, 2019
Customer
Dec. 31, 2019
USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Deferred revenue $ 1,118   $ 1,217
Deferred revenue recognized $ 690    
Customer Concentration Risk | Sales      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Number of customers that accounted for approximately 10% or more of revenue | Customer 2 3  
Percentage of benchmark 56.00% 55.00%  
Non-US | Geographic Concentration Risk | Sales      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Percentage of benchmark 13.00% 33.00%