Allowance for Doubtful Accounts (Schedule of Changes in Allowance for Doubtful Accounts) (Details) - Allowance for Doubtful Accounts [Member] - USD ($) $ in Thousands	12 Months Ended
Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Valuation and Qualifying Accounts Disclosure [Line Items]
Beginning Balance	$ 253	$ 269	$ 214
Costs and Expenses	195	22	137
Charge-offs	(44)	(38)	(82)
Ending Balance	$ 404	$ 253	$ 269

Amount of increase in valuation and qualifying accounts and reserves from charge to cost and expense.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SX 210.12-09)
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690

Name:	us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration