Summary of Significant Accounting Policies - Concentrations (Details)	3 Months Ended		9 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019
Net sales | Products | Product 1
Concentration risk
Concentration risk (as a percent)	17.00%	11.00%	18.00%	8.00%
Net sales | Products | Product 2
Concentration risk
Concentration risk (as a percent)	11.00%		10.00%
Net sales | Products | Product 3
Concentration risk
Concentration risk (as a percent)		32.00%		38.00%
Net sales | Customers | Customer A
Concentration risk
Concentration risk (as a percent)	29.00%	16.00%	25.00%	21.00%
Net sales | Customers | Customer B
Concentration risk
Concentration risk (as a percent)	21.00%	17.00%	24.00%	16.00%
Net sales | Customers | Customer C
Concentration risk
Concentration risk (as a percent)	12.00%	8.00%	11.00%	10.00%
Net sales | Customers | Customer D
Concentration risk
Concentration risk (as a percent)		31.00%		16.00%
Inventory purchases | Suppliers | JSP
Concentration risk
Concentration risk (as a percent)		40.00%	0.00%	36.00%