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Fair Value Measurements - Schedule of Financial Assets and Liabilities Measured at Fair Value (Details) - USD ($)
Mar. 31, 2025
Dec. 31, 2024
Schedule of Financial Assets and Liabilities Measured at Fair Value [Line Items]    
Securities owned, at fair value $ 29,364,000 $ 21,385,000
Total Securities sold, not yet purchased, at fair value 142,000 26,000
Level 1 [Member]    
Schedule of Financial Assets and Liabilities Measured at Fair Value [Line Items]    
Securities owned, at fair value 17,939,000 21,199,000
Total Securities sold, not yet purchased, at fair value 142,000 26,000
Level 2 [Member]    
Schedule of Financial Assets and Liabilities Measured at Fair Value [Line Items]    
Securities owned, at fair value 592,000 186,000
Total Securities sold, not yet purchased, at fair value
Level 3 [Member]    
Schedule of Financial Assets and Liabilities Measured at Fair Value [Line Items]    
Securities owned, at fair value 10,833,000
Total Securities sold, not yet purchased, at fair value
U.S. Government Securities [Member]    
Schedule of Financial Assets and Liabilities Measured at Fair Value [Line Items]    
Cash and securities segregated for regulatory purposes 44,369,000 68,758,000
Securities owned, at fair value 17,271,000 20,086,000
U.S. Government Securities [Member] | Level 1 [Member]    
Schedule of Financial Assets and Liabilities Measured at Fair Value [Line Items]    
Cash and securities segregated for regulatory purposes 44,369,000 68,758,000
Securities owned, at fair value 17,271,000 20,086,000
U.S. Government Securities [Member] | Level 2 [Member]    
Schedule of Financial Assets and Liabilities Measured at Fair Value [Line Items]    
Cash and securities segregated for regulatory purposes
Securities owned, at fair value
U.S. Government Securities [Member] | Level 3 [Member]    
Schedule of Financial Assets and Liabilities Measured at Fair Value [Line Items]    
Cash and securities segregated for regulatory purposes
Securities owned, at fair value
Certificates of Deposit [Member]    
Schedule of Financial Assets and Liabilities Measured at Fair Value [Line Items]    
Securities owned, at fair value 141,000 112,000
Certificates of Deposit [Member] | Level 1 [Member]    
Schedule of Financial Assets and Liabilities Measured at Fair Value [Line Items]    
Securities owned, at fair value
Certificates of Deposit [Member] | Level 2 [Member]    
Schedule of Financial Assets and Liabilities Measured at Fair Value [Line Items]    
Securities owned, at fair value 141,000 112,000
Certificates of Deposit [Member] | Level 3 [Member]    
Schedule of Financial Assets and Liabilities Measured at Fair Value [Line Items]    
Securities owned, at fair value
Municipal Securities [Member]    
Schedule of Financial Assets and Liabilities Measured at Fair Value [Line Items]    
Securities owned, at fair value 117,000  
Municipal Securities [Member] | Level 1 [Member]    
Schedule of Financial Assets and Liabilities Measured at Fair Value [Line Items]    
Securities owned, at fair value  
Municipal Securities [Member] | Level 2 [Member]    
Schedule of Financial Assets and Liabilities Measured at Fair Value [Line Items]    
Securities owned, at fair value 117,000  
Municipal Securities [Member] | Level 3 [Member]    
Schedule of Financial Assets and Liabilities Measured at Fair Value [Line Items]    
Securities owned, at fair value  
Corporate Bonds [Member]    
Schedule of Financial Assets and Liabilities Measured at Fair Value [Line Items]    
Securities owned, at fair value 16,000 2,000
Corporate Bonds [Member] | Level 1 [Member]    
Schedule of Financial Assets and Liabilities Measured at Fair Value [Line Items]    
Securities owned, at fair value
Corporate Bonds [Member] | Level 2 [Member]    
Schedule of Financial Assets and Liabilities Measured at Fair Value [Line Items]    
Securities owned, at fair value 16,000 2,000
Corporate Bonds [Member] | Level 3 [Member]    
Schedule of Financial Assets and Liabilities Measured at Fair Value [Line Items]    
Securities owned, at fair value
Unit investment Trust [Member]    
Schedule of Financial Assets and Liabilities Measured at Fair Value [Line Items]    
Securities owned, at fair value 229,000  
Unit investment Trust [Member] | Level 1 [Member]    
Schedule of Financial Assets and Liabilities Measured at Fair Value [Line Items]    
Securities owned, at fair value  
Unit investment Trust [Member] | Level 2 [Member]    
Schedule of Financial Assets and Liabilities Measured at Fair Value [Line Items]    
Securities owned, at fair value 229,000  
Unit investment Trust [Member] | Level 3 [Member]    
Schedule of Financial Assets and Liabilities Measured at Fair Value [Line Items]    
Securities owned, at fair value  
Options [Member]    
Schedule of Financial Assets and Liabilities Measured at Fair Value [Line Items]    
Securities owned, at fair value 1,000 58,000
Total Securities sold, not yet purchased, at fair value 64,000 25,000
Options [Member] | Level 1 [Member]    
Schedule of Financial Assets and Liabilities Measured at Fair Value [Line Items]    
Securities owned, at fair value 1,000 58,000
Total Securities sold, not yet purchased, at fair value 64,000 25,000
Options [Member] | Level 2 [Member]    
Schedule of Financial Assets and Liabilities Measured at Fair Value [Line Items]    
Securities owned, at fair value
Total Securities sold, not yet purchased, at fair value  
Options [Member] | Level 3 [Member]    
Schedule of Financial Assets and Liabilities Measured at Fair Value [Line Items]    
Securities owned, at fair value
Total Securities sold, not yet purchased, at fair value  
Equity Securities [Member]    
Schedule of Financial Assets and Liabilities Measured at Fair Value [Line Items]    
Securities owned, at fair value 11,589,000 1,127,000
Total Securities sold, not yet purchased, at fair value 78,000 1,000
Equity Securities [Member] | Level 1 [Member]    
Schedule of Financial Assets and Liabilities Measured at Fair Value [Line Items]    
Securities owned, at fair value 667,000 1,055,000
Total Securities sold, not yet purchased, at fair value 78,000 1,000
Equity Securities [Member] | Level 2 [Member]    
Schedule of Financial Assets and Liabilities Measured at Fair Value [Line Items]    
Securities owned, at fair value 89,000 72,000
Total Securities sold, not yet purchased, at fair value
Equity Securities [Member] | Level 3 [Member]    
Schedule of Financial Assets and Liabilities Measured at Fair Value [Line Items]    
Securities owned, at fair value 10,833,000
Total Securities sold, not yet purchased, at fair value