Employee Benefit Plans (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Jun. 30, 2017
Defined Benefit Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost	$ 55	$ 54
Expected return on plan assets	(62)	(69)
Amortization of net loss	42	49
Net periodic pension cost	35	34
Supplemental Executive Retirement Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Net periodic pension cost	101	$ 77
Postemployment benefits liability	$ 3,200		$ 2,900