Consolidated Balance Sheet (Unaudited) (Parentheticals) - USD ($) $ in Thousands	Dec. 31, 2021	Jun. 30, 2021
Investment securities available-for-sale, amortized cost	$ 137,703	$ 150,886
Investment securities held-to-maturity, fair value	9,978	15,592
Mortgage-backed securities held-to-maturity, fair value	113,083	82,659
Net loans receivable, allowance for loan losses	$ 529	$ 565
Preferred stock, shares authorized (in shares)	5,000,000	5,000,000
Preferred stock, shares oustanding (in shares)	0	0
Common stock, shares authorized (in shares)	10,000,000	10,000,000
Common stock, shares issued (in shares)	3,805,636	3,805,636
Treasury stock, shares (in shares)	1,921,522	1,921,522