Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Jun. 30, 2016
Accumulated Other Comprehensive Loss [Abstract]
Unrealized gain on available-for-sale securities, net of tax	$ 390	$ 1,224
Unrealized loss on securities transferred to held-to-maturity, net of tax	(1)	(2)
Net losses and past service liability for defined benefit plan, net of tax	(1,947)	(1,947)
Accumulated other comprehensive loss	$ (1,558)	$ (725)