Earnings Per Common Share ("EPS") - Factors Used in Earnings Per Common Share Computation (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Earnings Per Share [Abstract]
Net income (loss)	$ 708	$ 690	$ 1,359	$ 4,063
Basic weighted average shares outstanding	3,353,026	3,343,670	3,354,097	3,318,809
Less: Average unallocated ESOP shares	(141,932)	(161,177)	(146,743)	(165,988)
Basic average shares outstanding	3,211,094	3,182,493	3,207,354	3,152,821
Diluted effect of restricted stock awards and stock options	0	82,103	0	86,964
Diluted average shares outstanding	3,211,094	3,264,596	3,207,354	3,239,785
Basic earnings per common share	$ 0.22	$ 0.22	$ 0.42	$ 1.29
Diluted earnings per common share	$ 0.22	$ 0.21	$ 0.42	$ 1.25