Interest Income And Interest Expense (Tables)

12 Months Ended

Dec. 31, 2018

Banking And Thrift Interest [Abstract]

Components Of Interest Income And Interest Expense

The components of interest income and interest expense are as follows (in thousands): 

	Year Ended December 31,
	2018		2017		2016
Interest income:
Bank loans, net	$	300,541	$	206,084	$	127,923
Investment securities		252,200		187,731		107,454
Margin balances		49,515		37,218		32,147
Financial instruments owned		21,407		17,563		18,965
Other		22,786		5,785		7,843
	$	646,449	$	454,381	$	294,332
Interest expense:
Bank deposits	$	82,256	$	12,661	$	7,331
Senior notes		44,610		35,338		36,217
Federal Home Loan Bank advances		15,173		8,305		6,777
Other		28,037		13,726		16,549
	$	170,076	$	70,030	$	66,874