Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies (Details)

v3.8.0.1
Summary of Significant Accounting Policies (Details)
 3 Months Ended 9 Months Ended 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2017
Dec. 31, 2016
Mar. 31, 2017
Major Advertising Customer A | Accounts Receivable          
Concentration Risk [Line Items]          
Concentrations of credit risk, percentage     20.80%    
Major Content Customer A | Accounts Receivable          
Concentration Risk [Line Items]          
Concentrations of credit risk, percentage     15.70%    
Customer A | Accounts Receivable          
Concentration Risk [Line Items]          
Concentrations of credit risk, percentage         11.20%
Customer A | Sales          
Concentration Risk [Line Items]          
Concentrations of credit risk, percentage 20.50%   19.40%    
Customer B | Accounts Receivable          
Concentration Risk [Line Items]          
Concentrations of credit risk, percentage         10.70%
Customer B | Sales          
Concentration Risk [Line Items]          
Concentrations of credit risk, percentage 14.00% 16.20% 13.40% 13.40%  
Customer C | Sales          
Concentration Risk [Line Items]          
Concentrations of credit risk, percentage 13.60% 16.20% 12.70% 23.70%  
Customer D | Sales          
Concentration Risk [Line Items]          
Concentrations of credit risk, percentage 10.60%   10.50%    
Customer E | Sales          
Concentration Risk [Line Items]          
Concentrations of credit risk, percentage   13.90%   11.40%  
Carrier Partner A | Sales          
Concentration Risk [Line Items]          
Concentrations of credit risk, percentage 29.60% 32.90% 30.90% 26.60%  
Carrier Partner B | Sales          
Concentration Risk [Line Items]          
Concentrations of credit risk, percentage 24.00%   19.00%