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Revenue from Contracts with Customers (Tables)
3 Months Ended
Mar. 31, 2020
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, 2020 and 2019:

 
 
Three months ended March 31,
 
 
 
2020
  
2019
 
Commissions
 
$
936,784
  
$
1,426,235
 
Hard dollar payments
  
102,159
   
109,010
 
   
1,038,943
   
1,535,245
 
Research services
  
-
   
377,500
 
Underwriting fees
  
30,488
   
-
 
Sales manager fees
  
334,825
   
-
 
  
$
1,404,256
  
$
1,912,745