Note 3 - Loans - Recorded Investment by Risk Category (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Jun. 30, 2018
Pass [Member]
Financing Receivable, Net	$ 267,828	$ 253,774
Special Mention [Member]
Financing Receivable, Net	12,685	7,544
Substandard [Member]
Financing Receivable, Net	7,619	3,484
Doubtful [Member]
Financing Receivable, Net	737	1,011
Not Rated [Member]
Financing Receivable, Net	59,465	53,428
Commercial Portfolio Segment [Member] | Pass [Member]
Financing Receivable, Net	63,208	59,214
Commercial Portfolio Segment [Member] | Special Mention [Member]
Financing Receivable, Net	5,215	288
Commercial Portfolio Segment [Member] | Substandard [Member]
Financing Receivable, Net	1,037	1,162
Commercial Portfolio Segment [Member] | Doubtful [Member]
Financing Receivable, Net
Commercial Portfolio Segment [Member] | Not Rated [Member]
Financing Receivable, Net	346	415
Commercial Real Estate Portfolio Segment [Member] | Pass [Member] | Construction Loans [Member]
Financing Receivable, Net	11,171	5,386
Commercial Real Estate Portfolio Segment [Member] | Pass [Member] | Other Commercial Real Estate Loans [Member]
Financing Receivable, Net	177,340	172,471
Commercial Real Estate Portfolio Segment [Member] | Special Mention [Member] | Construction Loans [Member]
Financing Receivable, Net	65
Commercial Real Estate Portfolio Segment [Member] | Special Mention [Member] | Other Commercial Real Estate Loans [Member]
Financing Receivable, Net	7,132	7,061
Commercial Real Estate Portfolio Segment [Member] | Substandard [Member] | Construction Loans [Member]
Financing Receivable, Net
Commercial Real Estate Portfolio Segment [Member] | Substandard [Member] | Other Commercial Real Estate Loans [Member]
Financing Receivable, Net	6,232	1,878
Commercial Real Estate Portfolio Segment [Member] | Doubtful [Member] | Construction Loans [Member]
Financing Receivable, Net
Commercial Real Estate Portfolio Segment [Member] | Doubtful [Member] | Other Commercial Real Estate Loans [Member]
Financing Receivable, Net	458	702
Commercial Real Estate Portfolio Segment [Member] | Not Rated [Member] | Construction Loans [Member]
Financing Receivable, Net
Commercial Real Estate Portfolio Segment [Member] | Not Rated [Member] | Other Commercial Real Estate Loans [Member]
Financing Receivable, Net	1,790	1,255
Residential Portfolio Segment [Member] | Pass [Member] | Construction Loans [Member]
Financing Receivable, Net		8
Residential Portfolio Segment [Member] | Pass [Member] | Residential Real Estate Owner Occupied Loans [Member]
Financing Receivable, Net	2,248	2,577
Residential Portfolio Segment [Member] | Pass [Member] | Residential Real Estate Non-owner Occupied Loans [Member]
Financing Receivable, Net	13,834	14,025
Residential Portfolio Segment [Member] | Special Mention [Member] | Construction Loans [Member]
Financing Receivable, Net
Residential Portfolio Segment [Member] | Special Mention [Member] | Residential Real Estate Owner Occupied Loans [Member]
Financing Receivable, Net	89
Residential Portfolio Segment [Member] | Special Mention [Member] | Residential Real Estate Non-owner Occupied Loans [Member]
Financing Receivable, Net	184	195
Residential Portfolio Segment [Member] | Substandard [Member] | Construction Loans [Member]
Financing Receivable, Net
Residential Portfolio Segment [Member] | Substandard [Member] | Residential Real Estate Owner Occupied Loans [Member]
Financing Receivable, Net	25	27
Residential Portfolio Segment [Member] | Substandard [Member] | Residential Real Estate Non-owner Occupied Loans [Member]
Financing Receivable, Net	325	417
Residential Portfolio Segment [Member] | Doubtful [Member] | Construction Loans [Member]
Financing Receivable, Net
Residential Portfolio Segment [Member] | Doubtful [Member] | Residential Real Estate Owner Occupied Loans [Member]
Financing Receivable, Net	7	11
Residential Portfolio Segment [Member] | Doubtful [Member] | Residential Real Estate Non-owner Occupied Loans [Member]
Financing Receivable, Net	272	298
Residential Portfolio Segment [Member] | Not Rated [Member] | Construction Loans [Member]
Financing Receivable, Net	1,974	1,182
Residential Portfolio Segment [Member] | Not Rated [Member] | Residential Real Estate Owner Occupied Loans [Member]
Financing Receivable, Net	50,954	45,214
Residential Portfolio Segment [Member] | Not Rated [Member] | Residential Real Estate Non-owner Occupied Loans [Member]
Financing Receivable, Net	432	579
Consumer Portfolio Segment [Member] | Pass [Member]
Financing Receivable, Net	27	93
Consumer Portfolio Segment [Member] | Special Mention [Member]
Financing Receivable, Net
Consumer Portfolio Segment [Member] | Substandard [Member]
Financing Receivable, Net
Consumer Portfolio Segment [Member] | Doubtful [Member]
Financing Receivable, Net
Consumer Portfolio Segment [Member] | Not Rated [Member]
Financing Receivable, Net	$ 3,969	$ 4,783