Quarterly report pursuant to Section 13 or 15(d)

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

v3.20.1
Basis of Presentation and Significant Accounting Policies - Concentration of Credit Risk and Significant Customers (Details) - Customer Concentration Risk
3 Months Ended
Mar. 31, 2020
Dec. 31, 2019
Mar. 31, 2020
Mar. 31, 2019
Customer A | REVENUES        
Concentration Risk [Line Items]        
Concentration risk, percentage     0.00% 33.00%
Customer A | ACCOUNTS RECEIVABLE        
Concentration Risk [Line Items]        
Concentration risk, percentage 71.00% 73.00%    
Customer B | REVENUES        
Concentration Risk [Line Items]        
Concentration risk, percentage     20.00% 21.00%
Customer B | ACCOUNTS RECEIVABLE        
Concentration Risk [Line Items]        
Concentration risk, percentage 5.00% 2.00%    
Customer C | REVENUES        
Concentration Risk [Line Items]        
Concentration risk, percentage     14.00% 1.00%
Customer C | ACCOUNTS RECEIVABLE        
Concentration Risk [Line Items]        
Concentration risk, percentage 2.00% 2.00%    
Customer D | REVENUES        
Concentration Risk [Line Items]        
Concentration risk, percentage     10.00% 3.00%
Customer D | ACCOUNTS RECEIVABLE        
Concentration Risk [Line Items]        
Concentration risk, percentage 3.00% 3.00%    
Customer E | REVENUES        
Concentration Risk [Line Items]        
Concentration risk, percentage     0.00% 14.00%
Customer E | ACCOUNTS RECEIVABLE        
Concentration Risk [Line Items]        
Concentration risk, percentage 0.00% 0.00%