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Supporting Financial Information - Equipment and Improvements, Net (Details) - USD ($)
$ in Thousands
Dec. 31, 2025
Sep. 30, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract]    
Furniture and equipment $ 1,192 $ 1,177
Computer equipment and software 4,241 4,217
Leasehold improvements 1,567 1,567
Total equipment and improvements 7,000 6,961
Less: accumulated depreciation (5,873) (5,687)
Equipment and improvements, net $ 1,127 $ 1,274