Customer Concentrations and Accounts Receivable - Customer Concentrations (Details)	3 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Revenue from Contract with Customer, Product and Service Benchmark [Member] | Customer Concentration Risk | Optimal Group Australia Pty Ltd
Customer Concentrations and Accounts Receivable
Concentration percentage (as a percent)	12.00%
Revenue from Contract with Customer, Product and Service Benchmark [Member] | Customer Concentration Risk | E-Finity
Customer Concentrations and Accounts Receivable
Concentration percentage (as a percent)		12.00%
Revenue from Contract with Customer, Product and Service Benchmark [Member] | Customer Concentration Risk | DTC
Customer Concentrations and Accounts Receivable
Concentration percentage (as a percent)		10.00%
Accounts Receivable | Credit Concentration Risk | E-Finity
Customer Concentrations and Accounts Receivable
Concentration percentage (as a percent)	13.00%	11.00%
Accounts Receivable | Credit Concentration Risk | Reliable Secure Power Systems
Customer Concentrations and Accounts Receivable
Concentration percentage (as a percent)		12.00%