Quarterly report pursuant to Section 13 or 15(d)

Customer Concentrations and Accounts Receivable (Details)

v3.10.0.1
Customer Concentrations and Accounts Receivable (Details)
3 Months Ended 6 Months Ended 12 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Mar. 31, 2018
Revenue | Customer concentrations | Horizon          
Customer Concentrations and Accounts Receivable          
Concentration percentage 15.00%   10.00% 12.00%  
Revenue | Customer concentrations | E-Finity          
Customer Concentrations and Accounts Receivable          
Concentration percentage 12.00% 11.00% 11.00% 13.00%  
Revenue | Customer concentrations | SPETCO International          
Customer Concentrations and Accounts Receivable          
Concentration percentage 10.00%        
Revenue | Customer concentrations | Reliable Secure Power Systems          
Customer Concentrations and Accounts Receivable          
Concentration percentage   12.00%      
Revenue | Customer concentrations | Regatta          
Customer Concentrations and Accounts Receivable          
Concentration percentage   11.00%      
Revenue | Customer concentrations | Optimal Group Australia          
Customer Concentrations and Accounts Receivable          
Concentration percentage   11.00%   10.00%  
Revenue | Customer concentrations | IBT Europe GmbH          
Customer Concentrations and Accounts Receivable          
Concentration percentage   10.00%      
Net accounts receivable | Credit concentration | E-Finity          
Customer Concentrations and Accounts Receivable          
Concentration percentage     12.00%   18.00%
Net accounts receivable | Credit concentration | Woojin          
Customer Concentrations and Accounts Receivable          
Concentration percentage     12.00%    
Net accounts receivable | Credit concentration | Cal          
Customer Concentrations and Accounts Receivable          
Concentration percentage     11.00%    
Net accounts receivable | Credit concentration | Serba          
Customer Concentrations and Accounts Receivable          
Concentration percentage     10.00%   20.00%
Net accounts receivable | Credit concentration | Supernova          
Customer Concentrations and Accounts Receivable          
Concentration percentage         10.00%