Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation and Significant Accounting Policies - Concentration of Credit Risk and Significant Customers (Details)

v3.21.2
Basis of Presentation and Significant Accounting Policies - Concentration of Credit Risk and Significant Customers (Details) - Customer Concentration Risk
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
Customer A | REVENUES          
Concentration Risk [Line Items]          
Concentration risk, percentage 0.00% 0.00% 0.00% 0.00%  
Customer A | ACCOUNTS RECEIVABLE          
Concentration Risk [Line Items]          
Concentration risk, percentage     77.00%   71.00%
Customer B | REVENUES          
Concentration Risk [Line Items]          
Concentration risk, percentage 0.00% 17.00% 15.00% 19.00%  
Customer B | ACCOUNTS RECEIVABLE          
Concentration Risk [Line Items]          
Concentration risk, percentage     8.00%   9.00%
Customer C | REVENUES          
Concentration Risk [Line Items]          
Concentration risk, percentage 10.00% 6.00% 11.00% 11.00%  
Customer C | ACCOUNTS RECEIVABLE          
Concentration Risk [Line Items]          
Concentration risk, percentage     2.00%   3.00%
Customer D | REVENUES          
Concentration Risk [Line Items]          
Concentration risk, percentage 25.00% 0.00% 11.00% 0.00%  
Customer D | ACCOUNTS RECEIVABLE          
Concentration Risk [Line Items]          
Concentration risk, percentage     3.00%   0.00%
Customer E | REVENUES          
Concentration Risk [Line Items]          
Concentration risk, percentage 3.00% 11.00% 7.00% 9.00%  
Customer E | ACCOUNTS RECEIVABLE          
Concentration Risk [Line Items]          
Concentration risk, percentage     0.00%   0.00%