Note 15 - Fair Value - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Jun. 30, 2020
Securities, available-for-sale	$ 207,760	$ 143,918
Equity securities	424
Fair Value, Recurring [Member]
Securities, available-for-sale		10,532
Equity securities	424
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Securities, available-for-sale
Equity securities
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Securities, available-for-sale		10,532
Equity securities	424
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Securities, available-for-sale
Equity securities
US Government-sponsored Enterprises Debt Securities [Member]
Securities, available-for-sale	15,033	10,532
US Government-sponsored Enterprises Debt Securities [Member] | Fair Value, Recurring [Member]
Securities, available-for-sale	15,033
US Government-sponsored Enterprises Debt Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Securities, available-for-sale
US Government-sponsored Enterprises Debt Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Securities, available-for-sale	15,033
US Government-sponsored Enterprises Debt Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Securities, available-for-sale
US Treasury Securities [Member]
Securities, available-for-sale		1,256
US Treasury Securities [Member] | Fair Value, Recurring [Member]
Securities, available-for-sale		1,256
US Treasury Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Securities, available-for-sale
US Treasury Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Securities, available-for-sale		1,256
US Treasury Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Securities, available-for-sale
US States and Political Subdivisions Debt Securities [Member]
Securities, available-for-sale	76,499	63,492
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Recurring [Member]
Securities, available-for-sale	76,499	63,492
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Securities, available-for-sale
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Securities, available-for-sale	76,499	63,492
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Securities, available-for-sale
Residential Mortgage Backed Securities [Member]
Securities, available-for-sale	90,517	50,156
Residential Mortgage Backed Securities [Member] | Fair Value, Recurring [Member]
Securities, available-for-sale	90,517	50,156
Residential Mortgage Backed Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Securities, available-for-sale
Residential Mortgage Backed Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Securities, available-for-sale	90,517	50,156
Residential Mortgage Backed Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Securities, available-for-sale
Commercial Mortgage Backed Securities [Member]
Securities, available-for-sale	8,845	8,497
Commercial Mortgage Backed Securities [Member] | Fair Value, Recurring [Member]
Securities, available-for-sale	8,845	8,497
Commercial Mortgage Backed Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Securities, available-for-sale
Commercial Mortgage Backed Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Securities, available-for-sale	8,845	8,497
Commercial Mortgage Backed Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Securities, available-for-sale
Collateralized Debt Obligations [Member] | Fair Value, Recurring [Member]
Securities, available-for-sale	16,374	9,985
Collateralized Debt Obligations [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Securities, available-for-sale
Collateralized Debt Obligations [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Securities, available-for-sale	16,374	9,985
Collateralized Debt Obligations [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Securities, available-for-sale
Other Debt Obligations [Member]
Securities, available-for-sale	492
Other Debt Obligations [Member] | Fair Value, Recurring [Member]
Securities, available-for-sale	492
Other Debt Obligations [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Securities, available-for-sale
Other Debt Obligations [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Securities, available-for-sale	492
Other Debt Obligations [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Securities, available-for-sale