Revenues from Contracts with Customers (Tables)

6 Months Ended

Jun. 30, 2021

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 June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
Revenues from contracts with customers:
Commissions	$	389,768	$	382,640	$	824,988	$	838,495
Data, software, and post-trade	21,602		20,139		43,588		39,537
Fees from related parties	4,245		6,562		8,030		12,083
Other revenues	3,172		3,391		7,071		7,350
Total revenues from contracts with customers	418,787		412,732		883,677		897,465
Other sources of revenues:
Principal transactions	81,997		99,453		180,760		212,764
Interest and dividend income	11,455		6,536		14,493		10,697
Other revenues	211		367		1,096		1,329
Total revenues	$	512,450	$	519,088	$	1,080,026	$	1,122,255