Interim Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Interest income:
Loans	$ 414,077	$ 330,298	$ 808,221	$ 627,371
Investment securities:
Taxable	134,395	137,150	261,112	261,627
Non-taxable	10,931	7,666	21,868	12,758
Federal funds sold, securities purchased under agreements to resell and other short-term investment securities	26,364	6,187	45,580	11,943
Total interest income	585,767	481,301	1,136,781	913,699
Interest expense:
Deposits	47,150	6,270	75,057	10,367
Borrowings	9,214	8,588	19,435	17,026
Total interest expense	56,364	14,858	94,492	27,393
Net interest income	529,403	466,443	1,042,289	886,306
Provision for credit losses	23,946	29,080	52,497	57,052
Net interest income after provision for credit losses	505,457	437,363	989,792	829,254
Noninterest income:
Gains on investment securities, net	47,698	36,114	76,726	45,172
Gains on equity warrant assets, net	48,347	19,061	69,652	38,252
Client investment fees	45,744	29,452	90,226	52,327
Foreign exchange fees	38,506	34,077	76,554	67,904
Credit card fees	28,790	22,926	56,273	44,618
Deposit service charges	22,075	18,794	43,014	36,493
Lending related fees	11,213	9,528	25,150	20,263
Letters of credit and standby letters of credit fees	11,009	8,347	20,363	16,529
Investment banking revenue	48,694	0	98,489	0
Commissions	14,429	0	28,537	0
Other	17,245	14,390	29,142	26,649
Total noninterest income	333,750	192,689	614,126	348,207
Noninterest expense:
Compensation and benefits	243,172	181,955	481,233	347,761
Professional services	40,830	46,813	77,816	75,538
Premises and equipment	23,911	19,173	45,611	37,718
Net occupancy	16,687	13,288	32,735	26,904
Business development and travel	17,022	12,095	32,376	23,286
FDIC and state assessments	4,483	10,326	8,462	19,756
Other	37,417	22,089	70,953	40,193
Total noninterest expense	383,522	305,739	749,186	571,156
Income before income tax expense	455,685	324,313	854,732	606,305
Income tax expense	119,114	77,287	226,549	151,253
Net income before noncontrolling interests	336,571	247,026	628,183	455,052
Net income attributable to noncontrolling interests	(18,584)	(9,228)	(21,464)	(22,293)
Net income available to common stockholders	$ 317,987	$ 237,798	$ 606,719	$ 432,759
Earnings per common share—basic (dollars per share)	$ 6.12	$ 4.48	$ 11.61	$ 8.17
Earnings per common share—diluted (dollars per share)	$ 6.08	$ 4.42	$ 11.51	$ 8.05