Benefit Plans 6 (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Jun. 30, 2017
Defined Benefit Plan Asset Information
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	100.00%
Fair value of plan assets	$ 7,702	$ 6,530
Equity Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Asset Information
Fair value of plan assets	6,226	3,880
Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Asset Information
Fair value of plan assets	1,337	2,538
Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Asset Information
Fair value of plan assets	$ 139	$ 112
Minimum [Member] | Equity Securities [Member]
Defined Benefit Plan Asset Information
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	40.00%
Minimum [Member] | Debt Securities [Member]
Defined Benefit Plan Asset Information
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	20.00%
Minimum [Member] | Cash and Cash Equivalents [Member]
Defined Benefit Plan Asset Information
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	0.00%
Maximum [Member] | Equity Securities [Member]
Defined Benefit Plan Asset Information
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	70.00%
Maximum [Member] | Debt Securities [Member]
Defined Benefit Plan Asset Information
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	50.00%
Maximum [Member] | Cash and Cash Equivalents [Member]
Defined Benefit Plan Asset Information
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	20.00%