Securities (Details) $ in Thousands	3 Months Ended
	Sep. 30, 2025 USD ($) Category	Sep. 30, 2024 USD ($)	Jun. 30, 2025 USD ($)
Securities [Abstract]
Accrued interest receivable	$ 4,300		$ 4,500
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration]	Accrued interest receivable		Accrued interest receivable
Allowance for credit loss	$ 0		$ 0
Accrued interest receivable	$ 5,800		$ 4,900
Debt Securities, Held-to-Maturity, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration]	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
Gross realized gains (losses) on sale of available-for-sale securities	0	0
Federal Home Loan Bank Stock [Member]
Securities [Abstract]
Credit loss	0	$ 0
Deposits in Excess of FDIC Insurance Limits [Member] | Asset Pledged as Collateral [Member]
Securities [Abstract]
Securities, fair value	991,700		$ 1,000,000
Potential Borrowings at Federal Reserve Bank Discount Window and Bank Term Funding Program [Member] | Asset Pledged as Collateral [Member]
Securities [Abstract]
Securities, fair value	$ 18,400		$ 18,200