Loans Held for Investment - Schedule of Restructured Loans by Type, Net of Individually Evaluated Allowances (Details) $ in Thousands	12 Months Ended
Jun. 30, 2021 USD ($) loan	Jun. 30, 2020 USD ($) loan
Financing Receivable, Impaired [Line Items]
Number of modified loans \| loan	20	2
Restructured Loans, Allowance for Loan Losses	$ (384)	$ (112)
Restructured Loans, Unpaid Principal Balance	8,608	3,120
Restructured Loans, Related Charge-offs	(365)	(365)
Restructured Loans, Recorded Investment	8,243	2,755
Restructured loans, net investment	7,859	2,643
Mortgage loans, Single-family
Financing Receivable, Impaired [Line Items]
Restructured Loans, With Related Allowance, Unpaid Principal Balance	7,151	1,650
Restructured Loans, With Related Allowance, Related Charge-offs	0
Restructured Loans, With a Related Allowance, Recorded Investment	7,151	1,650
Restructured Loans, Allowance for Loan Losses	(384)	(108)
Restructured loans, with a related allowance, net investment	6,767	1,542
Restructured Loans, Without a Related Allowance, Unpaid Principal Balance	1,457	1,435
Restructured Loans, Without a Related Allowance, Related Charge-offs	(365)	(365)
Restructured Loans, Without a Related Allowance, Recorded Investment	1,092	1,070
Restructured Loans, Without a Related Allowance, Net Investment	1,092	1,070
Restructured Loans, Unpaid Principal Balance	8,608	3,085
Restructured Loans, Related Charge-offs	(365)	(365)
Restructured Loans, Recorded Investment	8,243	2,720
Restructured loans, net investment	$ 7,859	2,612
Commercial business loans
Financing Receivable, Impaired [Line Items]
Restructured Loans, With Related Allowance, Unpaid Principal Balance		35
Restructured Loans, With a Related Allowance, Recorded Investment		35
Restructured Loans, Allowance for Loan Losses		(4)
Restructured loans, with a related allowance, net investment		31
Restructured Loans, Unpaid Principal Balance		35
Restructured Loans, Recorded Investment		35
Restructured loans, net investment		$ 31
Substandard
Financing Receivable, Impaired [Line Items]
Number of modified loans \| loan	23

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Number of financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953676-111524

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