Summary of Significant Accounting Policies (Allowance for Doubtful Accounts) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	$ 1,648	$ 1,316	$ 918
Charges to bad debt expenses	323	834	940
Deductions	(781)	(502)	(542)
Balance at end of period	$ 1,190	$ 1,648	$ 1,316