Note 9 - Employee Benefit Plans - Summary of the Restricted Stock Awards (Details)	12 Months Ended
	Jun. 30, 2024 $ / shares shares
Restricted Stock [Member]
Restricted Stock Awards, Outstanding, Beginning Balance (in shares) | shares	23,044
Weighted-Average Grant Date Fair Value Per Share, Outstanding at Beginning Period (in dollars per share) | $ / shares	$ 19.46
Restricted Stock Awards, Granted (in shares) | shares	0
Weighted-Average Grant Date Fair Value Per Share, Granted (in dollars per share) | $ / shares	$ 0
Restricted Stock Awards, Vested (in shares) | shares	(10,283)
Weighted-Average Grant Date Fair Value Per Share, Vested (in dollars per share) | $ / shares	$ 19.24
Restricted Stock Awards, Outstanding, Ending Balance (in shares) | shares	12,761
Weighted-Average Grant Date Fair Value Per Share, Outstanding at Ending Period (in dollars per share) | $ / shares	$ 19.65
Restricted Stock Units (RSUs) [Member]
Restricted Stock Awards, Outstanding, Beginning Balance (in shares) | shares	9,078
Weighted-Average Grant Date Fair Value Per Share, Outstanding at Beginning Period (in dollars per share) | $ / shares	$ 18.74
Restricted Stock Awards, Granted (in shares) | shares	0
Weighted-Average Grant Date Fair Value Per Share, Granted (in dollars per share) | $ / shares	$ 0
Restricted Stock Awards, Vested (in shares) | shares	(3,027)
Weighted-Average Grant Date Fair Value Per Share, Vested (in dollars per share) | $ / shares	$ 18.74
Restricted Stock Awards, Outstanding, Ending Balance (in shares) | shares	6,051
Weighted-Average Grant Date Fair Value Per Share, Outstanding at Ending Period (in dollars per share) | $ / shares	$ 18.74