Fair Value Measurements and Fair Value of Financial Instruments, Carrying Amount and Estimated Fair Value (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Jun. 30, 2024
Carrying Amounts and Estimated Fair Value of Financial Instruments [Abstract]
Securities available-for-sale	$ 364,526	$ 350,001
Equity securities	339	328
Carrying Amount [Member]
Carrying Amounts and Estimated Fair Value of Financial Instruments [Abstract]
Cash and cash equivalents	213,469	190,395
Long-term certificates of deposit	2,579	2,831
Securities available-for-sale	364,526	350,001
Securities held-to-maturity	701,919	690,354
Equity securities	339	328
Federal Home Loan Bank stock	4,795	7,296
Net loans receivable	1,481,431	1,480,229
Accrued interest receivable	14,909	14,269
Interest rate swaps asset	2,892	585
Deposits	2,485,874	2,389,222
Borrowings	92,781	149,456
Subordinated notes payable, net	49,727	49,681
Accrued interest payable	1,432	1,551
Interest rate swaps liability	2,892	585
Fair Value [Member]
Carrying Amounts and Estimated Fair Value of Financial Instruments [Abstract]
Cash and cash equivalents	213,469	190,395
Long-term certificates of deposit	2,561	2,760
Securities available-for-sale	364,526	350,001
Securities held-to-maturity	664,874	630,241
Equity securities	339	328
Federal Home Loan Bank stock	4,795	7,296
Net loans receivable	1,402,271	1,387,325
Accrued interest receivable	14,909	14,269
Interest rate swaps asset	2,892	585
Deposits	2,485,707	2,388,305
Borrowings	92,764	149,438
Subordinated notes payable, net	47,093	46,114
Accrued interest payable	1,432	1,551
Interest rate swaps liability	2,892	585
Fair Value [Member] | Level 1 [Member]
Carrying Amounts and Estimated Fair Value of Financial Instruments [Abstract]
Cash and cash equivalents	213,469	190,395
Long-term certificates of deposit	0	0
Securities available-for-sale	0	0
Securities held-to-maturity	0	0
Equity securities	339	328
Federal Home Loan Bank stock	0	0
Net loans receivable	0	0
Accrued interest receivable	0	0
Interest rate swaps asset	0	0
Deposits	0	0
Borrowings	0	0
Subordinated notes payable, net	0	0
Accrued interest payable	0	0
Interest rate swaps liability	0	0
Fair Value [Member] | Level 2 [Member]
Carrying Amounts and Estimated Fair Value of Financial Instruments [Abstract]
Cash and cash equivalents	0	0
Long-term certificates of deposit	2,561	2,760
Securities available-for-sale	364,526	350,001
Securities held-to-maturity	664,874	630,241
Equity securities	0	0
Federal Home Loan Bank stock	4,795	7,296
Net loans receivable	0	0
Accrued interest receivable	14,909	14,269
Interest rate swaps asset	2,892	585
Deposits	2,485,707	2,388,305
Borrowings	92,764	149,438
Subordinated notes payable, net	47,093	46,114
Accrued interest payable	1,432	1,551
Interest rate swaps liability	2,892	585
Fair Value [Member] | Level 3 [Member]
Carrying Amounts and Estimated Fair Value of Financial Instruments [Abstract]
Cash and cash equivalents	0	0
Long-term certificates of deposit	0	0
Securities available-for-sale	0	0
Securities held-to-maturity	0	0
Equity securities	0	0
Federal Home Loan Bank stock	0	0
Net loans receivable	1,402,271	1,387,325
Accrued interest receivable	0	0
Interest rate swaps asset	0	0
Deposits	0	0
Borrowings	0	0
Subordinated notes payable, net	0	0
Accrued interest payable	0	0
Interest rate swaps liability	$ 0	$ 0