NET LOANS RECEIVABLE - Aging of Recorded Investment (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Jun. 30, 2019
NET LOANS RECEIVABLE
Total Past Due	$ 25,780	$ 11,790
Loans Not Past Due	1,094,277	1,054,249
Total	1,120,057	1,066,039
30 to 59 Days Past Due
NET LOANS RECEIVABLE
Total Past Due	17,588	640
60 to 89 Days Past Due
NET LOANS RECEIVABLE
Total Past Due	864	535
90 or more Days Past Due
NET LOANS RECEIVABLE
Total Past Due	7,328	10,615
Commercial
NET LOANS RECEIVABLE
Total	722,255	682,911
Commercial | Real estate
NET LOANS RECEIVABLE
Total Past Due	7,987	5,493
Loans Not Past Due	450,646	408,882
Total	458,633	414,375
Commercial | Real estate | 30 to 59 Days Past Due
NET LOANS RECEIVABLE
Total Past Due	5,798	3
Commercial | Real estate | 90 or more Days Past Due
NET LOANS RECEIVABLE
Total Past Due	2,189	5,490
Commercial | Commercial and industrial
NET LOANS RECEIVABLE
Total Past Due	4,270	42
Loans Not Past Due	171,220	183,220
Total	175,490	183,262
Commercial | Commercial and industrial | 30 to 59 Days Past Due
NET LOANS RECEIVABLE
Total Past Due	4,223
Commercial | Commercial and industrial | 90 or more Days Past Due
NET LOANS RECEIVABLE
Total Past Due	47	42
Commercial | Construction
NET LOANS RECEIVABLE
Total Past Due	7,907	1,377
Loans Not Past Due	80,225	83,897
Total	88,132	85,274
Commercial | Construction | 30 to 59 Days Past Due
NET LOANS RECEIVABLE
Total Past Due	6,609
Commercial | Construction | 90 or more Days Past Due
NET LOANS RECEIVABLE
Total Past Due	1,298	1,377
Residential mortgages
NET LOANS RECEIVABLE
Total Past Due	3,940	3,072
Loans Not Past Due	281,894	278,316
Total	285,834	281,388
Residential mortgages | 30 to 59 Days Past Due
NET LOANS RECEIVABLE
Total Past Due	685	156
Residential mortgages | 60 to 89 Days Past Due
NET LOANS RECEIVABLE
Total Past Due	672	217
Residential mortgages | 90 or more Days Past Due
NET LOANS RECEIVABLE
Total Past Due	2,583	2,699
Home equity loans and lines
NET LOANS RECEIVABLE
Total Past Due	1,663	1,782
Loans Not Past Due	79,742	78,476
Total	81,405	80,258
Home equity loans and lines | 30 to 59 Days Past Due
NET LOANS RECEIVABLE
Total Past Due	270	476
Home equity loans and lines | 60 to 89 Days Past Due
NET LOANS RECEIVABLE
Total Past Due	192	318
Home equity loans and lines | 90 or more Days Past Due
NET LOANS RECEIVABLE
Total Past Due	1,201	988
Consumer
NET LOANS RECEIVABLE
Total Past Due	13	24
Loans Not Past Due	30,550	21,458
Total	30,563	21,482
Consumer | 30 to 59 Days Past Due
NET LOANS RECEIVABLE
Total Past Due	3	5
Consumer | 90 or more Days Past Due
NET LOANS RECEIVABLE
Total Past Due	$ 10	$ 19