Summary of Significant Accounting Policies - Inventory (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Jun. 30, 2018
Components of Inventory
Finished goods	$ 9,903	$ 7,859
Raw materials	3,850	5,768
Total inventory	$ 13,753	$ 13,627
Finished goods, percent of inventory	72.00%	57.70%
Raw materials, percent of inventory	28.00%	42.30%
Inventory valuation reserves	$ 200	$ 1,400