Accounting for Certain Acquired Loans - Accretable Yield (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Accounting for Certain Acquired Loans.
Balance at beginning of period	$ 220	$ 589	$ 609
Certain Loans Acquired In Transfer Accretable Yield Additions	0	102	0
Certain Loans Acquired In Transfer Accretable Yield Accretion	(236)	(1,342)	(683)
Certain Loans Acquired In Transfer Accretable Yield Reclassification from Nonaccretable Difference	256	1,075	663
Certain Loans Acquired In Transfer Accretable Yield Disposals	0	(204)	0
Balance at end of period	$ 240	$ 220	$ 589