Note 5 - Investment Securities - Schedule of Investments By Contractual Maturity (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Jun. 30, 2021
Due in one year or less, available for sale, amortized cost	$ 55,191
Due after one through five years, available for sale, amortized cost	82,043
Due after five through ten years, available for sale, amortized cost	469
Due after ten years, available for sale, amortized cost	0
Investment securities available-for-sale, amortized cost	137,703	$ 150,886
Due in one year or less, available for sale, fair value	55,239
Due after one through five years, available for sale, fair value	82,054
Due after five through ten years, available for sale, fair value	461
Due after ten years,, available for sale, fair value	0
Investment securities available-for-sale (amortized cost of $137,703 and $150,886)	137,754	151,577
Due in one year or less, held to maturity, amortized cost	1,185
Due after one through five years, held to maturity, amortized cost	1,020
Due after five through ten years, held to maturity, amortized cost	7,748
Due after ten years, held to maturity, amortized cost	0
Investment securities held-to-maturity (fair value of $9,978 and $15,592)	9,953	15,489
Due in one year or less, held to maturity, fair value	1,213
Due after one through five years, held to maturity, fair value	1,067
Due after five through ten years, held to maturity, fair value	7,698
Due after ten years, held to maturity, fair value	0
Investment securities held-to-maturity, fair value	$ 9,978	$ 15,592