Summary of Significant Accounting Policies - Property and Equipment (Details) - USD ($)	12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Property, Plant and Equipment [Line Items]
Loss on disposal of fixed assets	$ 0	$ 0	$ 1,186,000
Equipment (includes computer hardware and software)
Property, Plant and Equipment [Line Items]
Estimated service lives of Property and Equipment	3 years
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Estimated service lives of Property and Equipment	5 years
Vehicles
Property, Plant and Equipment [Line Items]
Estimated service lives of Property and Equipment	5 years