Fair Value of Financial Instruments - Carrying amount and fair value of the Corporations other financial instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Jun. 30, 2024
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities - held to maturity	$ 109,399	$ 130,051
Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans held for investment, not recorded at fair value	1,044,727	1,051,932
Investment securities - held to maturity	109,399	130,051
FHLB - San Francisco stock	9,568	9,568
Deposits	888,772	888,348
Borrowings	213,073	238,500
Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans held for investment, not recorded at fair value	996,332	973,453
Investment securities - held to maturity	99,126	114,393
FHLB - San Francisco stock	9,568	9,568
Deposits	889,115	888,527
Borrowings	213,505	237,691
Fair Value \| Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans held for investment, not recorded at fair value	0	0
Investment securities - held to maturity	0	0
FHLB - San Francisco stock	0	0
Deposits	0	0
Borrowings	0	0
Fair Value \| Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans held for investment, not recorded at fair value	0	0
Investment securities - held to maturity	99,126	114,393
FHLB - San Francisco stock	9,568	9,568
Deposits	889,115	888,527
Borrowings	213,505	237,691
Fair Value \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans held for investment, not recorded at fair value	996,332	973,453
Investment securities - held to maturity	0	0
FHLB - San Francisco stock	0	0
Deposits	0	0
Borrowings	$ 0	$ 0

Loans Held for Investment, Net, Fair Value Disclosure

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- Definition

Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
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- Definition

Amount excluding accrued interest, before allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

Fair value portion of deposit liabilities held by the entity, including, but not limited to, foreign and domestic, interest and noninterest bearing, demand deposits, saving deposits, negotiable orders of withdrawal (NOW) and time deposits.

+ References

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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- Definition

Fair value portion of investments in Federal Home Loan Bank (FHLBank) stock.

+ References

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