Basis of Presentation (Details)		1 Months Ended		9 Months Ended
	Sep. 16, 2022 $ / shares	Oct. 31, 2023 USD ($) $ / shares shares	Sep. 30, 2022 USD ($)	Jun. 30, 2024 USD ($) shares
Nature of Operations
Gross proceeds | $				$ 4,932,000
Share of common stock | shares				1,107,134
Employee stock ownership | shares				57,845
Municipal Bank
Nature of Operations
Initial contribution | $			$ 2,500,000
Gouverneur Savings and Loan Association
Nature of Operations
Gross proceeds | $		$ 7,200,000
Share of common stock | shares		723,068
Share issued (in dollar per share) | $ / shares		$ 10.00
Employee stock ownership | shares		57,845
Conversion ratio		0.5334
Citizens Bank of Cape Vincent
Nature of Operations
Cash entitled to pay per each share | $ / shares	$ 1,056.11
Citizens Bank of Cape Vincent | Municipal Bank
Nature of Operations
Amount kept in municipal deposits | $			$ 24,187,000