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

12 Months Ended

Dec. 31, 2014

Financial Instruments Owned And Financial Instruments Sold, But Not Yet Purchased [Abstract]

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

	December 31,
	2014		2013
Financial instruments owned:
U.S. government securities	$	58,992	$	10,594
U.S. government agency securities		101,439		80,835
Mortgage-backed securities:
Agency		159,057		267,933
Non-agency		13,366		22,570
Corporate securities:
Fixed income securities		245,909		201,579
Equity securities		77,548		76,709
State and municipal securities		130,544		141,274
	$	786,855	$	801,494
Financial instruments sold, but not yet purchased
U.S. government securities	$	146,592	$	253,221
U.S. government agency securities		10,029		-
Mortgage-backed securities:
Agency		28,067		37,201
Non-agency		4,556		-
Corporate securities:
Fixed income securities		293,008		100,745
Equity securities		105,013		90,015
State and municipal securities		-		32
	$	587,265	$	481,214