Revenue from Contracts with Customers (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Revenue from Contracts with Customers [Abstract]
Underwriter payment receiving period	90 days
Total Revenues by Type [Abstract]
Total revenues	$ 661,920	$ 1,404,256
Brokerage Commissions [Member]
Total Revenues by Type [Abstract]
Total revenues	655,608	1,038,943
Commissions [Member]
Total Revenues by Type [Abstract]
Total revenues	591,248	936,784
Hard Dollar Payments [Member]
Total Revenues by Type [Abstract]
Total revenues	64,360	102,159
Underwriting Fees [Member]
Total Revenues by Type [Abstract]
Total revenues	0	30,488
Sales Manager Fees [Member]
Total Revenues by Type [Abstract]
Total revenues	$ 6,311	$ 334,825