Available for Sale Securities - Investments Pledged as Collateral to Secure Public Deposits and Securities Sold Under Agreements to Repurchase (Details) - USD ($)	Jun. 30, 2022	Jun. 30, 2021
Debt Securities, Available-for-sale [Line Items]
Carrying value of investment and MBS pledged as collateral to secure public deposits and securities sold under agreements to repurchase	$ 198,300,000	$ 155,600,000
Mortgage-Backed Securities
Debt Securities, Available-for-sale [Line Items]
Carrying value of investment and MBS pledged as collateral to secure public deposits and securities sold under agreements to repurchase	126,300,000	95,400,000
Collateralized Mortgage Obligations
Debt Securities, Available-for-sale [Line Items]
Carrying value of investment and MBS pledged as collateral to secure public deposits and securities sold under agreements to repurchase	27,300,000	18,800,000
US States and Political Subdivisions Debt Securities
Debt Securities, Available-for-sale [Line Items]
Carrying value of investment and MBS pledged as collateral to secure public deposits and securities sold under agreements to repurchase	42,300,000	41,400,000
Other Debt Obligations
Debt Securities, Available-for-sale [Line Items]
Carrying value of investment and MBS pledged as collateral to secure public deposits and securities sold under agreements to repurchase	$ 2,400,000	$ 0