Note 3 - Loans and Allowance for Credit Losses - Average Recorded Investment and Interest Income (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Mar. 31, 2023	Mar. 31, 2023	Jun. 30, 2023
Impaired Financing Receivable, Average Recorded Investment	$ 399	$ 405
Impaired Financing Receivable, Interest Income, Accrual Method	10	34
Impaired Financing Receivable, Interest Income, Cash Basis Method	10	10	$ 558
Commercial Portfolio Segment [Member]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	315	303
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	9	27
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	9	27
Commercial Real Estate Portfolio Segment [Member] \| Other Commercial Real Estate Loans [Member]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	39	40
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	1	5
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	1	5
Residential Portfolio Segment [Member] \| Owner Occupied Loans [Member]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	18	20
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	0	2
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	0	2
Residential Portfolio Segment [Member] \| Non-owner Occupied Loans [Member]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	27	42
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	0	0
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	$ 0	$ 0

Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

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