Parent Company Financial Information - Schedule of condensed statements cashflow (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Cash Flows from Operating Activities
Net income	$ 3,779	$ 1,328
Adjustments to reconcile net income to net cash (used for) provided by operating activities:
Net cash (used in) provided by operating activities	(259)	150
Cash Flows from Investing activities
Net cash used in investing activities	(686)	(16,945)
Cash Flows from Financing Activities
Cash dividends	(1,886)	(1,983)
Issuance of common stock funded by stock subscriptions	128,861
Purchase of unearned common stock held by employee stock ownership plan	(10,112)
Purchase of treasury stock	(49)
Net cash provided by financing activities	86,752	73,542
Net increase in cash and cash equivalents	85,807	56,747
Cash and cash equivalents - beginning	82,915	26,168
Cash and cash equivalents - ending	168,722	82,915
Supplementary Cash Flows Information
Income tax refunds	(301)	12
Parent Company
Cash Flows from Operating Activities
Net income	3,779	1,328
Adjustments to reconcile net income to net cash (used for) provided by operating activities:
Equity in undistributed net earnings of subsidiaries	(3,887)	(1,863)
Dividend from the Bank		4,000
Other	137	(61)
Net cash (used in) provided by operating activities	29	3,404
Cash Flows from Investing activities
Net second-step proceeds transferred to the Bank	(61,709)
Net cash used in investing activities	(61,709)
Cash Flows from Financing Activities
Cash dividends	(1,886)	(1,983)
Issuance of common stock funded by stock subscriptions	128,861
Purchase of unearned common stock held by employee stock ownership plan	(10,112)
Purchase of treasury stock	(49)
Net cash provided by financing activities	116,814	(1,983)
Net increase in cash and cash equivalents	55,134	1,421
Cash and cash equivalents - beginning	2,861	1,440
Cash and cash equivalents - ending	57,995	$ 2,861
Supplementary Cash Flows Information
Income tax refunds	$ (140)