Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 975	$ 1,303
Other Comprehensive Income (Loss)
Unrealized appreciation (depreciation) on available-for-sale securities, net of taxes	47	(352)
Less: reclassification adjustment for realized gains included in net income, net of taxes	8	71
Accumulated other comprehensive income (loss) before tax	39	(423)
Postretirement health plan amortization of transition obligation and prior service cost and change in net loss, net of taxes	1	(2)
Other comprehensive income (loss), net of tax	40	(425)
Comprehensive Income	$ 1,015	$ 878