Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies (Details)

v3.19.3.a.u2
Summary of Significant Accounting Policies (Details) - segment
3 Months Ended 9 Months Ended 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2019
Dec. 31, 2018
Mar. 31, 2019
Concentration Risk [Line Items]          
Number of operating segments     1    
Accounts Receivable | Customer A          
Concentration Risk [Line Items]          
Concentrations of credit risk     20.90%   25.70%
Sales | Customer A          
Concentration Risk [Line Items]          
Concentrations of credit risk 14.40%   17.70%    
Sales | Customer B          
Concentration Risk [Line Items]          
Concentrations of credit risk   28.80%   31.10%  
Sales | Carrier Partner A          
Concentration Risk [Line Items]          
Concentrations of credit risk 37.50% 43.70% 40.30% 47.60%  
Sales | Carrier Partner B          
Concentration Risk [Line Items]          
Concentrations of credit risk 29.80% 38.50% 30.90% 38.40%  
Sales | Carrier Partner C          
Concentration Risk [Line Items]          
Concentrations of credit risk 12.40%   10.00%    
License and Service | Minimum          
Concentration Risk [Line Items]          
License agreement, term 2 years   2 years    
License and Service | Maximum          
Concentration Risk [Line Items]          
License agreement, term 4 years   4 years