XML 46 R34.htm IDEA: XBRL DOCUMENT v3.20.2
Concentration of Credit Risk and Significant Customers (Details) - Customer Concentration Risk
9 Months Ended 12 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Dec. 31, 2019
Revenue | Customer A      
Concentration Risk [Line Items]      
Percentage of revenue or accounts receivable 67.30% 14.60%  
Revenue | Customer B      
Concentration Risk [Line Items]      
Percentage of revenue or accounts receivable 26.00% 51.10%  
Accounts Receivable | Customer A      
Concentration Risk [Line Items]      
Percentage of revenue or accounts receivable 44.00%   60.00%
Accounts Receivable | Customer B      
Concentration Risk [Line Items]      
Percentage of revenue or accounts receivable 36.10%   20.40%