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Employee Benefits - 2008 Equity Incentive Plan (Details) - USD ($) |  |  | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2017 | Jun. 30, 2012 | Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2021
Defined Contribution Plan Disclosure [Line Items] |  |  |  |  |
Equity Incentive Plan Description |  |  | The Company adopted an Equity Incentive Plan (the EIP) in 2008, reserving for award 132,000 shares (split-adjusted). EIP shares were available for award to directors, officers, and employees of the Company and its affiliates by a committee of outside directors. |  |
Equity Incentive Plan Shares reserved |  |  | 132,000 |  |
Equity Incentive Plan vesting percentage |  |  | 20.00% |  |
Restricted Stock |  |  |  |  |
Defined Contribution Plan Disclosure [Line Items] |  |  |  |  |
Equity Incentive Plan Shares Awarded | 0 | 122,803 |  |  |
Equity Incentive Plan vesting percentage |  |  | 20.00% |  |
Equity Incentive Plan Shares Vested |  |  | 0 | 2,250 | 2,700
Equity Incentive Plan Expense |  |  | $ 0 | $ 46,000 | $ 84,000
Equity Incentive Plan Remained Outstanding |  |  | 0 |  |
Equity Incentive Plan Unvested Compensation Expense |  |  | $ 0 |  |

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