Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies (Details)

v3.19.3
Summary of Significant Accounting Policies (Details)
 3 Months Ended 6 Months Ended 12 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Mar. 31, 2019
Accounts Receivable | Customer A          
Concentration Risk [Line Items]          
Concentrations of credit risk     27.00%   25.70%
Sales | Customer A          
Concentration Risk [Line Items]          
Concentrations of credit risk 20.60% 39.00% 19.60% 32.70%  
Sales | Customer B          
Concentration Risk [Line Items]          
Concentrations of credit risk 10.10%   10.90%    
Sales | Carrier Partner A          
Concentration Risk [Line Items]          
Concentrations of credit risk 43.30% 49.70% 43.50% 50.20%  
Sales | Carrier Partner B          
Concentration Risk [Line Items]          
Concentrations of credit risk 31.40% 38.80% 32.70% 38.30%