Note 4 - Fair Value - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Jun. 30, 2025
Securities, available-for-sale	$ 262,347	$ 273,875
Equity securities	0	392
US Treasury Securities [Member]
Securities, available-for-sale	981	2,937
US Government-sponsored Enterprises Debt Securities [Member]
Securities, available-for-sale	23,420	23,737
US States and Political Subdivisions Debt Securities [Member]
Securities, available-for-sale	79,143	75,459
Residential Mortgage-Backed Securities [Member]
Securities, available-for-sale	75,483	80,332
Commercial Mortgage-Backed Securities [Member]
Securities, available-for-sale	7,261	7,106
Other Debt Obligations [Member]
Securities, available-for-sale	12,769	17,243
Fair Value, Recurring [Member]
Equity securities		392
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member]
Equity securities		0
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member]
Equity securities		392
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member]
Equity securities		0
Fair Value, Recurring [Member] \| US Treasury Securities [Member]
Securities, available-for-sale	981	2,937
Fair Value, Recurring [Member] \| US Treasury Securities [Member] \| Fair Value, Inputs, Level 1 [Member]
Securities, available-for-sale	981	2,937
Fair Value, Recurring [Member] \| US Treasury Securities [Member] \| Fair Value, Inputs, Level 2 [Member]
Securities, available-for-sale	0	0
Fair Value, Recurring [Member] \| US Treasury Securities [Member] \| Fair Value, Inputs, Level 3 [Member]
Securities, available-for-sale	0	0
Fair Value, Recurring [Member] \| US Government-sponsored Enterprises Debt Securities [Member]
Securities, available-for-sale	23,420	23,737
Fair Value, Recurring [Member] \| US Government-sponsored Enterprises Debt Securities [Member] \| Fair Value, Inputs, Level 1 [Member]
Securities, available-for-sale	0	0
Fair Value, Recurring [Member] \| US Government-sponsored Enterprises Debt Securities [Member] \| Fair Value, Inputs, Level 2 [Member]
Securities, available-for-sale	23,420	23,737
Fair Value, Recurring [Member] \| US Government-sponsored Enterprises Debt Securities [Member] \| Fair Value, Inputs, Level 3 [Member]
Securities, available-for-sale	0	0
Fair Value, Recurring [Member] \| US States and Political Subdivisions Debt Securities [Member]
Securities, available-for-sale	79,143	75,459
Fair Value, Recurring [Member] \| US States and Political Subdivisions Debt Securities [Member] \| Fair Value, Inputs, Level 1 [Member]
Securities, available-for-sale	0	0
Fair Value, Recurring [Member] \| US States and Political Subdivisions Debt Securities [Member] \| Fair Value, Inputs, Level 2 [Member]
Securities, available-for-sale	79,143	75,459
Fair Value, Recurring [Member] \| US States and Political Subdivisions Debt Securities [Member] \| Fair Value, Inputs, Level 3 [Member]
Securities, available-for-sale	0	0
Fair Value, Recurring [Member] \| Residential Mortgage-Backed Securities [Member]
Securities, available-for-sale	75,483	80,332
Fair Value, Recurring [Member] \| Residential Mortgage-Backed Securities [Member] \| Fair Value, Inputs, Level 1 [Member]
Securities, available-for-sale	0	0
Fair Value, Recurring [Member] \| Residential Mortgage-Backed Securities [Member] \| Fair Value, Inputs, Level 2 [Member]
Securities, available-for-sale	75,483	80,332
Fair Value, Recurring [Member] \| Residential Mortgage-Backed Securities [Member] \| Fair Value, Inputs, Level 3 [Member]
Securities, available-for-sale	0	0
Fair Value, Recurring [Member] \| Commercial Mortgage-Backed Securities [Member]
Securities, available-for-sale	7,261	7,106
Fair Value, Recurring [Member] \| Commercial Mortgage-Backed Securities [Member] \| Fair Value, Inputs, Level 1 [Member]
Securities, available-for-sale	0	0
Fair Value, Recurring [Member] \| Commercial Mortgage-Backed Securities [Member] \| Fair Value, Inputs, Level 2 [Member]
Securities, available-for-sale	7,261	7,106
Fair Value, Recurring [Member] \| Commercial Mortgage-Backed Securities [Member] \| Fair Value, Inputs, Level 3 [Member]
Securities, available-for-sale	0	0
Fair Value, Recurring [Member] \| Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member]
Securities, available-for-sale	63,290	67,061
Fair Value, Recurring [Member] \| Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member] \| Fair Value, Inputs, Level 1 [Member]
Securities, available-for-sale	0	0
Fair Value, Recurring [Member] \| Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member] \| Fair Value, Inputs, Level 2 [Member]
Securities, available-for-sale	63,290	67,061
Fair Value, Recurring [Member] \| Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member] \| Fair Value, Inputs, Level 3 [Member]
Securities, available-for-sale	0	0
Fair Value, Recurring [Member] \| Other Debt Obligations [Member]
Securities, available-for-sale	12,769	17,243
Fair Value, Recurring [Member] \| Other Debt Obligations [Member] \| Fair Value, Inputs, Level 1 [Member]
Securities, available-for-sale	0	0
Fair Value, Recurring [Member] \| Other Debt Obligations [Member] \| Fair Value, Inputs, Level 2 [Member]
Securities, available-for-sale	12,769	17,243
Fair Value, Recurring [Member] \| Other Debt Obligations [Member] \| Fair Value, Inputs, Level 3 [Member]
Securities, available-for-sale	$ 0	$ 0

CONSUMERS BANCORP INC /OH/ 10-Q