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Segment Reporting - Schedule of Segment Reporting (Details) - USD ($)
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Revenue    
Total Revenue $ 83,901,000 $ 71,514,000
Expenses    
Total Expenses 66,433,000 53,388,000
Operating income 17,468,000 18,126,000
Retail [Member]    
Revenue    
Total Revenue 62,388,000 54,019,000
Expenses    
Total Expenses 21,649,000 18,063,000
Stock Loan [Member]    
Revenue    
Total Revenue 19,249,000 16,172,000
Expenses    
Total Expenses 9,776,000 8,281,000
Market Making [Member]    
Revenue    
Total Revenue 2,255,000 1,304,000
Expenses    
Total Expenses 1,403,000 1,582,000
Consolidated Overhead [Member]    
Revenue    
Total Revenue 9,000 19,000
Expenses    
Total Expenses $ 33,605,000 $ 25,462,000