Note 4 - Loans - Recorded Investment by Risk Category (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Jun. 30, 2021
Pass [Member]
Financing Receivable, Net	$ 411,796	$ 401,493
Special Mention [Member]
Financing Receivable, Net	3,004	4,143
Substandard [Member]
Financing Receivable, Net	5,649	5,230
Doubtful [Member]
Financing Receivable, Net	544	1,771
Not Rated [Member]
Financing Receivable, Net	183,843	154,974
Commercial Portfolio Segment [Member] | Pass [Member]
Financing Receivable, Net	90,101	109,118
Commercial Portfolio Segment [Member] | Special Mention [Member]
Financing Receivable, Net	781	280
Commercial Portfolio Segment [Member] | Substandard [Member]
Financing Receivable, Net	116	309
Commercial Portfolio Segment [Member] | Doubtful [Member]
Financing Receivable, Net	289	303
Commercial Portfolio Segment [Member] | Not Rated [Member]
Financing Receivable, Net	194	277
Commercial Real Estate Portfolio Segment [Member] | Pass [Member] | Construction Loans [Member]
Financing Receivable, Net	13,396	10,478
Commercial Real Estate Portfolio Segment [Member] | Pass [Member] | Other Commercial Real Estate Loans [Member]
Financing Receivable, Net	283,308	259,327
Commercial Real Estate Portfolio Segment [Member] | Special Mention [Member] | Construction Loans [Member]
Financing Receivable, Net	0	0
Commercial Real Estate Portfolio Segment [Member] | Special Mention [Member] | Other Commercial Real Estate Loans [Member]
Financing Receivable, Net	2,077	3,700
Commercial Real Estate Portfolio Segment [Member] | Substandard [Member] | Construction Loans [Member]
Financing Receivable, Net	0	0
Commercial Real Estate Portfolio Segment [Member] | Substandard [Member] | Other Commercial Real Estate Loans [Member]
Financing Receivable, Net	5,458	4,718
Commercial Real Estate Portfolio Segment [Member] | Doubtful [Member] | Construction Loans [Member]
Financing Receivable, Net	0	0
Commercial Real Estate Portfolio Segment [Member] | Doubtful [Member] | Other Commercial Real Estate Loans [Member]
Financing Receivable, Net	206	874
Commercial Real Estate Portfolio Segment [Member] | Not Rated [Member] | Construction Loans [Member]
Financing Receivable, Net	0	0
Commercial Real Estate Portfolio Segment [Member] | Not Rated [Member] | Other Commercial Real Estate Loans [Member]
Financing Receivable, Net	663	929
Residential Portfolio Segment [Member] | Pass [Member] | Construction Loans [Member]
Financing Receivable, Net	1,789	1,849
Residential Portfolio Segment [Member] | Pass [Member] | Residential Real Estate Owner Occupied Loans [Member]
Financing Receivable, Net	1,167	1,715
Residential Portfolio Segment [Member] | Pass [Member] | Residential Real Estate Non-owner Occupied Loans [Member]
Financing Receivable, Net	21,345	18,312
Residential Portfolio Segment [Member] | Special Mention [Member] | Construction Loans [Member]
Financing Receivable, Net	0	0
Residential Portfolio Segment [Member] | Special Mention [Member] | Residential Real Estate Owner Occupied Loans [Member]
Financing Receivable, Net	0	0
Residential Portfolio Segment [Member] | Special Mention [Member] | Residential Real Estate Non-owner Occupied Loans [Member]
Financing Receivable, Net	146	163
Residential Portfolio Segment [Member] | Substandard [Member] | Construction Loans [Member]
Financing Receivable, Net	0	0
Residential Portfolio Segment [Member] | Substandard [Member] | Residential Real Estate Owner Occupied Loans [Member]
Financing Receivable, Net	0	6
Residential Portfolio Segment [Member] | Substandard [Member] | Residential Real Estate Non-owner Occupied Loans [Member]
Financing Receivable, Net	75	197
Residential Portfolio Segment [Member] | Doubtful [Member] | Construction Loans [Member]
Financing Receivable, Net	0	0
Residential Portfolio Segment [Member] | Doubtful [Member] | Residential Real Estate Owner Occupied Loans [Member]
Financing Receivable, Net	22	392
Residential Portfolio Segment [Member] | Doubtful [Member] | Residential Real Estate Non-owner Occupied Loans [Member]
Financing Receivable, Net	27	202
Residential Portfolio Segment [Member] | Not Rated [Member] | Construction Loans [Member]
Financing Receivable, Net	4,712	7,320
Residential Portfolio Segment [Member] | Not Rated [Member] | Residential Real Estate Owner Occupied Loans [Member]
Financing Receivable, Net	137,904	117,218
Residential Portfolio Segment [Member] | Not Rated [Member] | Residential Real Estate Non-owner Occupied Loans [Member]
Financing Receivable, Net	303	274
Consumer Portfolio Segment [Member] | Pass [Member]
Financing Receivable, Net	690	694
Consumer Portfolio Segment [Member] | Special Mention [Member]
Financing Receivable, Net	0	0
Consumer Portfolio Segment [Member] | Substandard [Member]
Financing Receivable, Net	0	0
Consumer Portfolio Segment [Member] | Doubtful [Member]
Financing Receivable, Net	0	0
Consumer Portfolio Segment [Member] | Not Rated [Member]
Financing Receivable, Net	$ 40,067	$ 28,956