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Investments in Other Entities and Noncontrolling Interest in a Subsidiary - Investments in Equity Securities (Details) - USD ($)
 1 Months Ended 3 Months Ended 9 Months Ended 12 Months Ended
Aug. 31, 2025
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Dec. 31, 2024
Jul. 31, 2025
Schedule of Equity Method Investments [Line Items]              
Proceeds from equity securities $ 4,200,000            
Gain (loss) on extinguishment of loan receivable classified as available-for-sale securities,   $ 313,000 $ 0 $ 313,000 $ 0    
Indemnification holdbacks 600,000            
Convertible promissory notes              
Schedule of Equity Method Investments [Line Items]              
Proceeds from equity securities 3,700,000            
Gain (loss) on equity securities 1,600,000            
Gain (loss) on extinguishment of loan receivable classified as available-for-sale securities, 300,000            
Preferred stock              
Schedule of Equity Method Investments [Line Items]              
Proceeds from equity securities $ 500,000            
Gain (loss) on equity securities           $ 500,000  
Other investments   $ 1,500,000   1,500,000     $ 1,500,000
Number of shares in other investments             2,000,000
Equity securities, upward price adjustment       0      
Equity securities, downward price adjustment       0      
Impairment of investments in equity securities       $ 0