Summary of Significant Accounting Policies (Allowance for Doubtful Accounts Activity) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Allowance for doubtful accounts activity
Beginning balance	$ 864	$ 712	$ 1,437
Provision for doubtful accounts	125	465	375
Write-offs	(189)	(313)	(1,100)
Ending balance	$ 800	$ 864	$ 712