Investment Securities - Additional Information (Details) - USD ($)	12 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Schedule of Held-to-Maturity Securities [Line Items]
Savings bank	$ 37,000	$ 25,000
Secure Public Funds
Schedule of Held-to-Maturity Securities [Line Items]
Mortgage-backed security	1,700,000	$ 1,800,000
Mortgage-backed Securities of U.S. Government and Government-sponsored Agencies
Schedule of Held-to-Maturity Securities [Line Items]
Expected credit loss	$ 0