Quarterly report pursuant to Section 13 or 15(d)

Customer Concentrations and Accounts Receivable - Customer Concentrations (Details)

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Customer Concentrations and Accounts Receivable - Customer Concentrations (Details)
3 Months Ended 9 Months Ended 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2019
Dec. 31, 2018
Mar. 31, 2019
Revenue | Customer concentrations | Optimal Group Australia Pty Ltd          
Customer Concentrations and Accounts Receivable          
Concentration percentage 11.00%        
Revenue | Customer concentrations | E-Finity          
Customer Concentrations and Accounts Receivable          
Concentration percentage   14.00% 12.00% 12.00%  
Revenue | Customer concentrations | Cal          
Customer Concentrations and Accounts Receivable          
Concentration percentage   13.00%      
Revenue | Customer concentrations | DTC          
Customer Concentrations and Accounts Receivable          
Concentration percentage   13.00%      
Net accounts receivable | Credit concentration | E-Finity          
Customer Concentrations and Accounts Receivable          
Concentration percentage     12.00%   10.00%
Net accounts receivable | Credit concentration | Reliable Secure Power Systems          
Customer Concentrations and Accounts Receivable          
Concentration percentage         14.00%