Note 6 - Goodwill and Acquired Intangible Assets (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Goodwill, Impairment Loss	$ 0
Amortization of Intangible Assets	56	$ 54
Finite-Lived Intangible Asset, Expected Amortization, Year One	57
Finite-Lived Intangible Asset, Expected Amortization, after Year Four	186
Finite-Lived Intangible Asset, Expected Amortization, Year Two	57
Finite-Lived Intangible Asset, Expected Amortization, Year Three	57
Finite-Lived Intangible Asset, Expected Amortization, Year Four	$ 57
Core Deposits [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	10 years