Note 10 - Employee Benefit Plans - Summary of the Restricted Stock Awards (Details) - Restricted Stock [Member]	12 Months Ended
	Jun. 30, 2022 $ / shares shares
Restricted Stock Awards, Outstanding, Beginning Balance (in shares) | shares	11,461
Weighted-Average Grant Date Fair Value Per Share, Outstanding at Beginning Period (in dollars per share) | $ / shares	$ 17.14
Restricted Stock Awards, Granted (in shares) | shares	20,571
Weighted-Average Grant Date Fair Value Per Share, Granted (in dollars per share) | $ / shares	$ 22.00
Restricted Stock Awards, Vested (in shares) | shares	(14,963)
Weighted-Average Grant Date Fair Value Per Share, Vested (in dollars per share) | $ / shares	$ 20.62
Restricted Stock Awards, Outstanding, Ending Balance (in shares) | shares	17,069
Weighted-Average Grant Date Fair Value Per Share, Outstanding at Ending Period (in dollars per share) | $ / shares	$ 19.95