Fair Value of Financial Instruments - Carrying amount and fair value of the Corporations other financial instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Jun. 30, 2025
Fair Value of Financial Instruments
Investment securities - held to maturity	$ 89,251	$ 109,399
Carrying Amount
Fair Value of Financial Instruments
Loans held for investment, not recorded at fair value	1,031,704	1,044,727
Investment securities - held to maturity	89,251	109,399
FHLB - San Francisco stock	9,568	9,568
Deposits	910,383	888,772
Borrowings	157,046	213,073
Fair Value
Fair Value of Financial Instruments
Loans held for investment, not recorded at fair value	992,265	996,332
Investment securities - held to maturity	81,010	99,126
FHLB - San Francisco stock	9,568	9,568
Deposits	910,064	889,115
Borrowings	156,870	213,505
Fair Value \| Level 1
Fair Value of Financial Instruments
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 of Financial Instruments
Loans held for investment, not recorded at fair value	0	0
Investment securities - held to maturity	81,010	99,126
FHLB - San Francisco stock	9,568	9,568
Deposits	910,064	889,115
Borrowings	156,870	213,505
Fair Value \| Level 3
Fair Value of Financial Instruments
Loans held for investment, not recorded at fair value	992,265	996,332
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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Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

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

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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.

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

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