Interim Consolidated Statements of Income - USD ($) $ in Thousands		3 Months Ended			9 Months Ended
		Sep. 30, 2017		Sep. 30, 2016	Sep. 30, 2017		Sep. 30, 2016
Interest income:
Loans		$ 268,445		$ 214,227	$ 745,983		$ 617,456
Investment securities:
Taxable		109,443		83,468	294,768		261,121
Non-taxable		1,172		522	2,703		1,693
Federal funds sold, securities purchased under agreements to resell and other short-term investment securities		6,211		2,196	16,670		5,793
Total interest income		385,271		300,413	1,060,124		886,063
Interest expense:
Deposits		2,304		1,535	6,218		3,984
Borrowings		8,993		9,717	27,243		28,161
Total interest expense		11,297		11,252	33,461		32,145
Net interest income		373,974		289,161	1,026,663		853,918
Provision for credit losses	[1]	23,522		20,004	70,062		90,225
Net interest income after provision for credit losses		350,452		269,157	956,601		763,693
Noninterest income:
Gains on investment securities, net		15,238		23,178	48,838		41,764
Gains on equity warrant assets, net (2)	[2]	24,922		21,558	42,432		33,253
Foreign exchange fees		29,671		25,944	82,026		76,998
Credit card fees		20,270		18,295	56,099		49,226
Deposit service charges		14,508		13,356	43,046		39,142
Client investment fees		15,563		7,952	37,571		23,959
Lending related fees		15,404		8,168	32,874		23,783
Letters of credit and standby letters of credit fees		7,306		6,811	20,951		18,414
Other (2)	[2]	15,896		18,878	41,128		36,511
Total noninterest income		158,778		144,140	404,965		343,050
Noninterest expense:
Compensation and benefits		153,263		136,568	449,412		374,410
Professional services		32,987		23,443	86,331		67,959
Premises and equipment		18,937		16,291	53,753		47,861
Net occupancy		12,660		9,525	35,437		28,919
Business development and travel		10,329		8,504	30,913		30,077
FDIC and state assessments		8,359		7,805	26,354		21,624
Correspondent bank fees		3,162		3,104	9,770		9,469
Other		18,064		15,533	54,670		44,292
Total noninterest expense (1)	[1]	257,761		220,773	746,640		624,611
Income before income tax expense		251,469		192,524	614,926		482,132
Income tax expense (3)		97,351	[3]	76,877	220,412	[3]	195,508
Net income before noncontrolling interests		154,118		115,647	394,514		286,624
Net income loss attributable to noncontrolling interests		(5,498)		(4,566)	(21,218)		(3,405)
Net income available to common stockholders (3)		$ 148,620	[3]	$ 111,081	$ 373,296	[3]	$ 283,219
Earnings per common share—basic (dollars per share)		$ 2.82	[3]	$ 2.13	$ 7.11	[3]	$ 5.46
Earnings per common share—diluted (dollars per share)		$ 2.79	[3]	$ 2.12	$ 7.01	[3]	$ 5.42

[1] Our consolidated statements of income for the three and nine months ended September 30, 2016 were modified from prior period's presentation to conform to the current period's presentation, which reflects our provision for loan losses and provision for unfunded credit commitments together as our “provision for credit losses”. In prior periods, our provision for unfunded credit commitments were reported as a component of noninterest expense.

[2] Our consolidated statements of income for the three and nine months ended September 30, 2016 were modified from prior period's presentation to conform to the current period's presentation, which reflects a new line item to separately disclose net gains on equity warrant assets. In prior periods, net gains on equity warrant assets were reported as a component of gains on derivative instruments, net. We removed the line item gains on derivative instruments, net and reclassified all other gains on derivative instruments, net to other noninterest income.

[3] Included in income tax expense, net income available to common shareholders, earnings per common share-basic and earnings for common share-diluted, for the three and nine months ended September 30, 2017, are tax benefits recognized associated with the adoption of Accounting Standards Update (“ASU”) 2016-09, Improvements to Employee Share-Based Payment Accounting in the first quarter of 2017. This guidance was adopted on a prospective basis with no change to prior period amounts.