Financial Instruments Owned And Financial Instruments Sold, But Not Yet Purchased (Tables)

3 Months Ended

Mar. 31, 2018

Trading Securities Balance Sheet Reported Amounts [Abstract]

Components Of Trading Securities Owned And Trading Securities Sold, But Not Yet Purchased

The components of financial instruments owned and financial instruments sold, but not yet purchased, at March 31, 2018 and December 31, 2017 are as follows (in thousands):

	March 31, 2018		December 31, 2017
Financial instruments owned:
U.S. government securities	$	21,087	$	13,466
U.S. government agency securities		111,921		147,223
Mortgage-backed securities:
Agency		361,747		302,445
Non-agency		29,081		29,356
Asset-backed securities		85,987		76,752
Corporate securities:
Fixed income securities		364,917		325,471
Equity securities		39,090		46,802
Sovereign debt		19,341		32,470
State and municipal securities		147,876		169,699
	$	1,181,047	$	1,143,684
Financial instruments sold, but not yet purchased:
U.S. government securities	$	527,073	$	442,402
U.S. government agency securities		20,618		10,348
Mortgage-backed securities:
Agency		144,169		86,612
Corporate securities:
Fixed income securities		223,865		180,755
Equity securities		20,235		38,510
Sovereign debt		23,575		20,236
	$	959,535	$	778,863