Note 4 - Loans - Recorded Investment by Risk Category (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Jun. 30, 2021
Pass [Member]
Financing Receivable, Net	$ 437,281	$ 401,493
Special Mention [Member]
Financing Receivable, Net	2,962	4,143
Substandard [Member]
Financing Receivable, Net	4,903	5,230
Doubtful [Member]
Financing Receivable, Net	740	1,771
Not Rated [Member]
Financing Receivable, Net	178,294	154,974
Commercial Portfolio Segment [Member] | Pass [Member]
Financing Receivable, Net	115,183	109,118
Commercial Portfolio Segment [Member] | Special Mention [Member]
Financing Receivable, Net	687	280
Commercial Portfolio Segment [Member] | Substandard [Member]
Financing Receivable, Net	271	309
Commercial Portfolio Segment [Member] | Doubtful [Member]
Financing Receivable, Net	294	303
Commercial Portfolio Segment [Member] | Not Rated [Member]
Financing Receivable, Net	234	277
Commercial Real Estate Portfolio Segment [Member] | Pass [Member] | Construction Loans [Member]
Financing Receivable, Net	21,443	10,478
Commercial Real Estate Portfolio Segment [Member] | Pass [Member] | Other Commercial Real Estate Loans [Member]
Financing Receivable, Net	274,500	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	2,123	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	4,555	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	219	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	1,104	929
Residential Portfolio Segment [Member] | Pass [Member] | Construction Loans [Member]
Financing Receivable, Net	3,138	1,849
Residential Portfolio Segment [Member] | Pass [Member] | Residential Real Estate Owner Occupied Loans [Member]
Financing Receivable, Net	1,232	1,715
Residential Portfolio Segment [Member] | Pass [Member] | Residential Real Estate Non-owner Occupied Loans [Member]
Financing Receivable, Net	21,128	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	152	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	77	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	227	392
Residential Portfolio Segment [Member] | Doubtful [Member] | Residential Real Estate Non-owner Occupied Loans [Member]
Financing Receivable, Net	0	202
Residential Portfolio Segment [Member] | Not Rated [Member] | Construction Loans [Member]
Financing Receivable, Net	3,775	7,320
Residential Portfolio Segment [Member] | Not Rated [Member] | Residential Real Estate Owner Occupied Loans [Member]
Financing Receivable, Net	136,946	117,218
Residential Portfolio Segment [Member] | Not Rated [Member] | Residential Real Estate Non-owner Occupied Loans [Member]
Financing Receivable, Net	269	274
Consumer Portfolio Segment [Member] | Pass [Member]
Financing Receivable, Net	657	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	$ 35,966	$ 28,956