New Accounting Pronouncements (Narrative) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Jun. 30, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Short-term deferred income tax asset		$ 438
Long-Term Deferred Income Tax Asset	$ 919	9
Short-term deferred income tax liability		752
Long-Term Deferred Income Tax Liability	1,709	$ 871
Accounting Standards Update 2015-17 [Member] | Scenario, Adjustment [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Short-term deferred income tax asset	(438)
Long-Term Deferred Income Tax Asset	438
Short-term deferred income tax liability	(752)
Long-Term Deferred Income Tax Liability	$ 752