Business Segments (Tables)

12 Months Ended

Dec. 31, 2015

Segment Reporting [Abstract]

Revenues, Pre-tax Earnings and Total Assets by Segment

The Company’s revenues, income (loss) from continuing operations before income taxes (“Pre-tax earnings”) and total assets by segment are summarized in the following table (in thousands):

	Market Making		Global Execution Services			Corporate and Other			Consolidated Total
For the year ended December 31, 2015:
Revenues	$	884,858	$	667,723		$	46,529		$	1,599,110
Pre-tax earnings	124,028		368,957			(113,023		)	379,962
Total assets	4,855,482		727,029			468,667			6,051,178
For the year ended December 31, 2014:
Revenues	$	901,152	$	345,710		$	69,369		$	1,316,232
Pre-tax earnings	146,713		11,056			(72,582		)	85,187
Total assets	4,401,021		786,734			1,642,899			6,830,654
For the year ended December 31, 2013:
Revenues	$	688,197	$	197,765		$	141,374		$	1,027,336
Pre-tax earnings	103,612		(25,794		)	(52,842		)	24,978
Total assets	3,939,965		1,106,448			1,950,591			6,997,004

Revenues by Geographic Area

The following table presents Revenues by geographic area.

	U.S.		International		Consolidated Total
For the year ended December 31, 2015:
Revenues	$	1,449,370	$	149,740	$	1,599,110
For the year ended December 31, 2014:
Revenues	$	1,127,088	$	189,144	$	1,316,232
For the year ended December 31, 2013:
Revenues	$	834,410	$	192,926	$	1,027,336