Benefit Plans (Details Textuals) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Service Cost	$ 36	$ 38
Net other periodic post-employment costs	60	201
Pension Plans, Defined Benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Service Cost	31	31
Benefit Plans (Textuals) [Abstract]
Contribution to benefit plan	900
Expected contribution to benefit plans for remainder of fiscal year	1,920
Postretirement Health Coverage [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Service Cost	5	$ 7
Benefit Plans (Textuals) [Abstract]
Contribution to benefit plan	47
Expected contribution to benefit plans for remainder of fiscal year	$ 143