Securities (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2025 USD ($) Security	Mar. 31, 2024 USD ($)	Mar. 31, 2025 USD ($) Category Security	Mar. 31, 2024 USD ($)	Jun. 30, 2024 USD ($)
Debt Securities, Available-for-Sale [Line Items]
Accrued interest receivable	$ 5,200		$ 5,200		$ 4,000
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration]	Accrued interest receivable		Accrued interest receivable		Accrued interest receivable
Allowance for credit loss	$ 0		$ 0		$ 0
Accrued interest receivable	$ 6,000		$ 6,000		$ 4,100
Debt Securities, Held-to-Maturity, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration]	Accrued interest receivable		Accrued interest receivable		Accrued interest receivable
Number of categories utilized under risk management approach of diversified investing (in Category) | Category			3
Available for sale securities transferred at fair value to held to maturity	$ 0	$ 0	$ 0	$ 0
Gross realized gains (losses) on sale of available-for-sale securities	$ (665)	0	$ (665)	0
Number of available-for-sale securities sold (in Security) | Security	2		2
Par value of securities sold	$ 7,000		$ 7,000
Proceeds from sale of available-for-sale securities		0	6,676	0
Investment in Federal Home Loan Bank Stock [Member]
Debt Securities, Available-for-Sale [Line Items]
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Writeoff	0	$ 0	0	$ 0
Deposits in Excess of FDIC Insurance Limits [Member] | Asset Pledged as Collateral [Member]
Debt Securities, Available-for-Sale [Line Items]
Securities, fair value	981,200		981,200		$ 894,500
Potential Borrowings at Federal Reserve Bank Discount Window and Bank Term Funding Program [Member] | Asset Pledged as Collateral [Member]
Debt Securities, Available-for-Sale [Line Items]
Securities, fair value	$ 18,100		$ 18,100		$ 40,000