Benefit Plans 2 (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013
Pension Benefits [Member]
Net periodic costs
Service cost	$ 97	$ 77	$ 78
Interest cost	896	1,180	1,260
Expected return on plan assets	(495)	(416)	(403)
Recognized net actuarial loss (gain)	559	611	735
Amortization of prior service cost	86	78	83
Net periodic cost (benefits)	1,143	1,530	1,753
Postretirement Health Coverage [Member]
Net periodic costs
Service cost	53	48	80
Interest cost	95	139	188
Expected return on plan assets	0	0	0
Recognized net actuarial loss (gain)	(87)	(38)	(53)
Amortization of prior service cost	(272)	(271)	107
Net periodic cost (benefits)	$ (211)	$ (122)	$ 322