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Revenue from Contracts with Customers (Tables)
 3 Months Ended
Mar. 31, 2022
Revenue from Contracts with Customers [Abstract]  
Total Revenues by Type
Total revenues from contracts with customers by type were as follows for the three months ended March 31, 2022 and 2021:
   
Three months ended March 31,
  
   
2022
    
2021
  
Commissions
  
$
459,995
    
$
591,248
  
Hard dollar payments
    
43,743
      
64,360
  
     
503,738
      
655,608
  
Underwriting fees
    
-
      
6,311
  
   
$
503,738
    
$
661,919