CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY (UNAUDITED) - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Retained Earnings - Substantially Restricted [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Unallocated ESOP Shares [Member]	Total
Balance at Jun. 30, 2018	$ 38	$ 21,516	$ (27,886)	$ 42,795	$ (188)	$ (2,258)	$ 34,017
Net income				2,179			2,179
Other comprehensive income (loss)					(202)		(202)
Purchase of treasury stock			(372)				(372)
Amortization of unallocated ESOP shares		29				108	137
Cash dividends declared				(463)			(463)
Balance at Mar. 31, 2019	38	21,545	(28,258)	44,511	(390)	(2,150)	35,296
Balance at Dec. 31, 2018	38	21,530	(28,258)	43,941	(1,685)	(2,179)	33,387
Net income				747			747
Other comprehensive income (loss)					1,295		1,295
Amortization of unallocated ESOP shares		15				29	44
Cash dividends declared				(177)			(177)
Balance at Mar. 31, 2019	38	21,545	(28,258)	44,511	(390)	(2,150)	35,296
Balance at Jun. 30, 2019	38	21,550	(28,269)	44,807	15	(2,092)	36,049
Net income				2,145			2,145
Other comprehensive income (loss)					(5,164)		(5,164)
Purchase of treasury stock			(347)				(347)
Amortization of unallocated ESOP shares		25				96	121
Cash dividends declared				(532)			(532)
Balance at Mar. 31, 2020	38	21,575	(28,616)	46,420	(5,149)	(1,996)	32,272
Balance at Dec. 31, 2019	38	21,568	(28,382)	45,973	347	(2,031)	37,513
Net income				625			625
Other comprehensive income (loss)					(5,496)		(5,496)
Purchase of treasury stock			(234)				(234)
Amortization of unallocated ESOP shares		7				35	42
Cash dividends declared				(178)			(178)
Balance at Mar. 31, 2020	$ 38	$ 21,575	$ (28,616)	$ 46,420	$ (5,149)	$ (1,996)	$ 32,272