Loans Held for Investment - Schedule of Total Recorded Investment in Non-Performing Loans by Type (Details) - USD ($)	3 Months Ended	9 Months Ended
Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022	Jun. 30, 2022
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid Principal Balance	$ 1,054,000		$ 1,054,000		$ 1,541,000
Related Charge-Offs	(27,000)		(27,000)		(33,000)
Recorded Investment	1,027,000		1,027,000		1,508,000
Related Allowance	(82,000)		(82,000)		(85,000)
Recorded Investment, Net of Allowance	945,000		945,000		1,423,000
With related allowances, Average Recorded Investment	973,000	$ 2,439,000	983,000	$ 4,305,000
Without related allowances, Average Recorded Investment	57,000	540,000	87,000	675,000
Average Recorded Investment	1,030,000	2,979,000	1,070,000	4,980,000
Interest income recognized with a related allowance	13,000	27,000	33,000	129,000
Interest income recognized without a related allowance	0	1,000		232,000
Total interest income recognized	13,000	28,000	33,000	361,000
Mortgage loans, Single-family
Financing Receivable, Allowance for Credit Losses [Line Items]
With related allowances, Average Recorded Investment	973,000	1,267,000	983,000	3,126,000
Without related allowances, Average Recorded Investment	57,000	540,000	87,000	675,000
Interest income recognized with a related allowance	13,000	15,000	33,000	86,000
Interest income recognized without a related allowance	0	1,000		232,000
Mortgage Loans, Multi Family
Financing Receivable, Allowance for Credit Losses [Line Items]
With related allowances, Average Recorded Investment	0	1,172,000		1,179,000
Interest income recognized with a related allowance	0	$ 12,000		$ 43,000
Mortgage loans, Single-family
Financing Receivable, Allowance for Credit Losses [Line Items]
With a related allowance Unpaid Principal Balance	971,000		971,000		993,000
Without a related allowance, Unpaid Principal Balance	83,000		83,000		548,000
Unpaid Principal Balance	1,054,000		1,054,000		1,541,000
With Related Allowance, Related Charge-Offs	0		0		0
With No Related Allowance, Related Charge-Offs	(27,000)		(27,000)		(33,000)
Related Charge-Offs	(27,000)		(27,000)		(33,000)
With Related Allowance, Recorded Investment	971,000		971,000		993,000
With No Related Allowance, Recorded Investment	56,000		56,000		515,000
Recorded Investment	1,027,000		1,027,000		1,508,000
Related Allowance	(82,000)		(82,000)		(85,000)
Recorded Investment, with Related Allowance, Net	889,000		889,000		908,000
Recorded Investment, with No Related Allowance, Net	56,000		56,000		515,000
Recorded Investment, Net of Allowance	$ 945,000		$ 945,000		$ 1,423,000

Impaired Financing Receivable, Recorded Investment, Net of Allowance

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