Benefit Plans (Details Textuals) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Service Cost	$ 35	$ 39	$ 71	$ 77
Net other periodic post-employment costs	61	200	121	401
Pension Plans, Defined Benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Service Cost	31	32	62	63
Benefit Plans (Textuals) [Abstract]
Contribution to benefit plan			1,000
Expected contribution to benefit plans for remainder of fiscal year	1,820		1,820
Retiree Health Care Benefits [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Service Cost	4	$ 7	9	$ 14
Benefit Plans (Textuals) [Abstract]
Contribution to benefit plan			95
Expected contribution to benefit plans for remainder of fiscal year	$ 95		$ 95