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Income Taxes - Additional Information (Details) - USD ($) | 12 Months Ended |  |  |
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Dec. 31, 2024 | Jun. 30, 2024 | Dec. 31, 2023 | Jun. 30, 2021
Income Tax [Line Items] |  |  |  |
Operating loss carryforwards, limitations on use | Pursuant to Sections 382 and 383 of the Internal Revenue Code, annual use of net operating loss ("NOL") and credit carryforwards may be limited in the event a cumulative change in ownership of more than 50 percent occurs within a three‑year period. |  |  |
Cumulative change in ownership Percentage | 50.00% |  |  |
Estimated net operating losses available each year | $ 756,000 |  |  |
Oak Park River Forest Bankshares, Inc. |  |  |  |
Income Tax [Line Items] |  |  |  |
Estimated net operating losses available each year | 781,000 |  |  |
Net operating loss carryforwards | 4,300,000 |  |  |
Inland Acquisition |  |  |  |
Income Tax [Line Items] |  |  |  |
Estimated net operating losses available each year | 4,200,000 |  |  |
Net operating loss carryforwards | $ 4,100,000 |  |  |
Prorated Amount |  |  | $ 2,100,000 |
State and Local Jurisdiction |  |  |  |
Income Tax [Line Items] |  |  |  |
Net operating loss carryforwards |  | $ 500,000 |  | $ 100,000
Operating Loss Carryforwards Expiration Term | Dec. 31, 2043 |  |  |

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- Definition Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-3 + Details
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