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Income Taxes - Additional Information (Details) - USD ($)
 12 Months Ended
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