MORTGAGE-BACKED SECURITIES (Schedule of Mortgage-Backed Securities by Contractual Maturity) (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Jun. 30, 2021
Amortized cost
Due in one year or less	$ 540
Due after one through five years	2,205
Due after five through ten years	7,747
Due after ten years
Total	10,492	$ 15,489
Fair value
Due in one year or less	543
Due after one through five years	2,306
Due after five through ten years	7,733
Due after ten years
Total	10,582	15,592
Collateralized Mortgage Obligations [Member]
Amortized cost
Due in one year or less
Due after one through five years	42
Due after five through ten years
Due after ten years	99,916
Total	99,958	82,459
Fair value
Due in one year or less
Due after one through five years	42
Due after five through ten years
Due after ten years	100,101
Total	$ 100,143	$ 82,659