Interim Consolidated Statements of Income - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2017		Mar. 31, 2016
Interest income:
Loans		$ 227,341		$ 197,942
Investment securities:
Taxable		89,803		91,050
Non-taxable		646		596
Federal funds sold, securities purchased under agreements to resell and other short-term investment securities		3,136		2,070
Total interest income		320,926		291,658
Interest expense:
Deposits		1,717		1,188
Borrowings		9,216		9,049
Total interest expense		10,933		10,237
Net interest income		309,993		281,421
Provision for credit losses (1)		29,679		33,341
Provision for credit losses	[1]	30,734		33,475
Net interest income after provision for credit losses		279,259		247,946
Noninterest income:
Gains (losses) on investment securities, net		15,970		(4,684)
Gains and losses on equity warrant assets	[2]	6,690		6,606
Foreign exchange fees		26,247		26,966
Credit card fees		17,730		15,507
Deposit service charges		13,975		12,672
Client investment fees		9,026		7,995
Lending related fees		8,961		7,813
Letters of credit and standby letters of credit fees		6,639		5,589
Other (2)	[2]	12,421		7,670
Total noninterest income		117,659		86,134
Noninterest expense:
Compensation and benefits		147,176		122,262
Professional services		25,419		19,000
Premises and equipment		15,858		14,984
Business development and travel		9,195		12,246
Net occupancy		11,651		10,035
FDIC and state assessments		8,682		6,927
Correspondent bank fees		3,445		3,652
Other		16,207		14,793
Total noninterest expense (1)	[1]	237,633		203,899
Income before income tax expense		159,285		130,181
Income tax expense (3)		51,405	[3]	53,584
Net income before noncontrolling interests		107,880		76,597
Net (income) loss attributable to noncontrolling interests		(6,397)		2,577
Net income available to common stockholders (3)		$ 101,483	[3]	$ 79,174
Earnings per common share—basic (dollars per share)		$ 1.94	[3]	$ 1.53
Earnings per common share—diluted (dollars per share)		$ 1.91	[3]	$ 1.52

[1] Our consolidated statements of income 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 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 months ended March 31, 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.