Revenue from Contracts with Customers (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenue from Contracts with Customers [Abstract]
Underwriter payment receiving period			90 days
Total Revenues by Type [Abstract]
Total revenues	$ 566,436	$ 1,100,225	$ 1,228,356	$ 2,504,481
Brokerage Commissions [Member]
Total Revenues by Type [Abstract]
Total revenues	566,436	1,100,225	1,222,044	2,139,168
Commissions [Member]
Total Revenues by Type [Abstract]
Total revenues	492,898	999,541	1,084,146	1,936,325
Hard Dollar Payments [Member]
Total Revenues by Type [Abstract]
Total revenues	73,538	100,684	137,898	202,843
Underwriting Fees [Member]
Total Revenues by Type [Abstract]
Total revenues	0	0	6,311	30,488
Sales Manager Fees [Member]
Total Revenues by Type [Abstract]
Total revenues	$ 0	$ 0	$ 0	$ 334,825