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Revenue Recognition (Tables)
6 Months Ended
Jun. 30, 2024
Revenue Recognition [Abstract]  
Schedule of Principal Transactions and Proprietary Trading The following table represents detail related to principal transactions and proprietary trading.
   Three Months Ended June 30, 2024 
   2024   2023   Increase (Decrease) 
Principal transactions and proprietary trading            
Realized and unrealized gain on primarily riskless principal transactions  $3,480,000   $2,186,000   $1,294,000 
Realized and unrealized gain on portfolio of U.S. government securities   94,000    468,000    (374,000)
Total Principal transactions and proprietary trading  $3,574,000   $2,654,000   $920,000 
   Six Months Ended June 30, 2024 
   2024   2023   Increase (Decrease) 
Principal transactions and proprietary trading            
Realized and unrealized gain on primarily riskless principal transactions  $6,923,000   $3,985,000   $2,938,000 
Realized and unrealized gain on portfolio of U.S. government securities   157,000    1,469,000    (1,312,000)
Total Principal transactions and proprietary trading  $7,080,000   $5,454,000   $1,626,000