Quarterly report pursuant to Section 13 or 15(d)

Concentration of Risk (Details)

v3.20.1
Concentration of Risk (Details) - customer
3 Months Ended 12 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Dec. 31, 2019
Total Revenue      
Concentration Risk [Line Items]      
Concentration Risk, Number of Customers 2 3  
Accounts Receivable      
Concentration Risk [Line Items]      
Concentration Risk, Number of Customers 4   2
Customer One | Total Revenue      
Concentration Risk [Line Items]      
Percentage of accounts receivable and total revenue 53.00% 70.00%  
Customer One | Accounts Receivable      
Concentration Risk [Line Items]      
Percentage of accounts receivable and total revenue 26.00%   33.00%
Customer Two | Total Revenue      
Concentration Risk [Line Items]      
Percentage of accounts receivable and total revenue 32.00% 14.00%  
Customer Two | Accounts Receivable      
Concentration Risk [Line Items]      
Percentage of accounts receivable and total revenue 18.00%   13.00%
Customer Three | Total Revenue      
Concentration Risk [Line Items]      
Percentage of accounts receivable and total revenue   11.00%