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Debt - Narrative (Details)
3 Months Ended 9 Months Ended
Dec. 01, 2022
USD ($)
Aug. 10, 2022
USD ($)
Jul. 07, 2022
USD ($)
Apr. 24, 2020
USD ($)
Sep. 24, 2018
USD ($)
Sep. 30, 2022
USD ($)
debt_instrument
shares
Sep. 30, 2021
USD ($)
shares
Sep. 30, 2022
USD ($)
debt_instrument
shares
Sep. 30, 2021
shares
Oct. 31, 2018
USD ($)
Debt Instrument [Line Items]                    
Number of debt instruments | debt_instrument           4   4    
FHLB of Indianapolis                    
Debt Instrument [Line Items]                    
Federal home loan bank borrowings     $ 14,500,000              
Federal home loan bank borrowings floating interest rate     3.45%              
Federal Home Loan Bank, Borrowings maturity date     Jan. 09, 2023              
Debt           $ 14,500,000   $ 14,500,000    
Common stocks                    
Debt Instrument [Line Items]                    
Equity contribution received   $ 5,000,000.0                
Federal Home Loan Bank Debt                    
Debt Instrument [Line Items]                    
Face amount of debt           14,500,000   14,500,000    
Paycheck Protection Program                    
Debt Instrument [Line Items]                    
Debt       $ 2,700,000            
Debt instrument, description       The Company received notice from the SBA that the loan was 100% forgiven, including accrued interest, on July 8, 2021.  This resulted in a $2.8 million gain that was included in Other Gains on the Consolidated Statement of Operations in the third quarter of 2021.            
Loan forgiven date       Jul. 08, 2021            
Paycheck Protection Program | Other Gains                    
Debt Instrument [Line Items]                    
Gain on forgiven loan             $ 2,800,000      
Senior Unsecured Notes | Senior Unsecured Notes                    
Debt Instrument [Line Items]                    
Face amount of debt           $ 24,400,000   $ 24,400,000   $ 25,300,000
Maturity date                   Sep. 30, 2023
Interest rate                   6.75%
Number of units repurchased | shares           0 0 0 0  
Debt issuance costs           $ 260,000   $ 260,000    
Subordinated notes | Subordinated notes                    
Debt Instrument [Line Items]                    
Face amount of debt         $ 10,500,000 10,500,000   $ 10,500,000    
Maturity date         Sep. 30, 2038          
Interest rate, payment terms               Interest is payable quarterly at the end of March, June, September and December.    
Call premium percentage         12.50%          
Debt issuance costs           823,000   $ 823,000    
Subordinated notes | Subordinated notes | Debt Instrument, Redemption, Period One                    
Debt Instrument [Line Items]                    
Interest rate         7.50%          
Call premium         $ 1,100,000          
Subordinated notes | Subordinated notes | Debt Instrument, Redemption, Period Two                    
Debt Instrument [Line Items]                    
Interest rate         12.50%          
Call premium         $ 1,750,000          
Subordinated notes | Subordinated notes | Debt Instrument, Redemption, Period Three                    
Debt Instrument [Line Items]                    
Call premium         $ 3,050,000.00          
Line of credit                    
Debt Instrument [Line Items]                    
Borrowing capacity $ 10,000,000.0         10,000,000.0   10,000,000.0    
Debt           $ 0   $ 0    
Line of credit | LIBOR                    
Debt Instrument [Line Items]                    
Variable interest rate 2.75%