Revenues from Contracts with Customers (Tables)

9 Months Ended

Sep. 30, 2020

Revenue From Contract With Customer [Abstract]

Summary of Revenues from Contracts with Customers and Other Sources of Revenues

The following table presents the Company’s total revenues separated between revenues from contracts with customers and other sources of revenues (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2020		2019		2020		2019
Revenues from contracts with customers:
Commissions	$	352,027	$	409,765	$	1,190,522	$	1,262,921
Data, software, and post-trade		21,523		18,364		61,060		55,015
Fees from related parties		8,814		8,208		20,897		21,224
Other revenues		4,077		4,162		11,427		9,462
Total revenues from contracts with customers		386,441		440,499		1,283,906		1,348,622
Other sources of revenues:
Principal transactions		65,182		75,536		277,946		250,198
Interest and dividend income		2,418		3,976		13,115		15,454
Other revenues		998		1,126		2,327		2,801
Total revenues	$	455,039	$	521,137	$	1,577,294	$	1,617,075