CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014		Jun. 30, 2015	Jun. 30, 2014
INTEREST AND DIVIDEND INCOME
Loans receivable, including fees	$ 234,049	$ 269,484		$ 475,615	$ 531,055
Available-for-sale investment securities	9,484	12,490		19,668	24,766
Resale agreements	4,680	4,559		9,529	9,412
Investment in Federal Home Loan Bank and Federal Reserve Bank stock	2,306	1,555		3,542	3,426
Due from banks and short-term investments	4,926	6,354		10,352	11,956
Total interest and dividend income	255,445	294,442		518,706	580,615
INTEREST EXPENSE
Customer deposits	18,195	15,569		35,158	31,451
Short-term borrowings	18			18
Federal Home Loan Bank advances	1,049	1,015		2,082	2,060
Repurchase agreements	7,533	10,189		15,939	20,267
Long-term debt	1,158	1,219		2,300	2,421
Total interest expense	27,953	27,992		55,497	56,199
Net interest income before provision for loan losses	227,492	266,450		463,209	524,416
Provision for loan losses	3,494	8,000		8,481	14,933
Net interest income after provision for loan losses	223,998	258,450		454,728	509,483
NONINTEREST INCOME (LOSS)
Branch fees	9,791	9,519		19,175	18,965
Letters of credit fees and foreign exchange income	8,825	8,940		17,531	15,796
Ancillary loan fees	2,812	2,521		5,468	4,993
Wealth management fees	4,757	5,232		9,936	8,260
Derivative commission income	2,733	2,634		7,763	5,223
Changes in FDIC indemnification asset and receivable/payable	(6,668)	(57,558)		(15,090)	(111,192)
Net gains on sales of loans	5,280	6,793		14,831	12,989
Net gains on sales of available-for-sale investment securities	5,554	671		9,958	4,089
Other fees and other operating income	7,509	6,303		15,147	11,016
Total noninterest income (loss)	40,593	(14,945)		84,719	(29,861)
NONINTEREST EXPENSE
Compensation and employee benefits	62,860	55,081		127,113	114,358
Occupancy and equipment expense	15,185	16,534		30,628	32,385
Amortization of tax credit and other investments	2,997	5,490	[1]	9,296	6,982	[1]
Amortization of premiums on deposits acquired	2,337	2,624		4,728	5,124
Deposit insurance premiums and regulatory assessments	3,341	5,812		8,997	11,514
Loan related expense (income)	1,750	(1,098)		4,090	1,477
Other real estate owned (income) expense	(5,081)	783		(6,107)	2,117
Legal expense	4,134	9,104		11,004	12,903
Data processing	2,377	2,940		4,994	11,140
Consulting expense	2,182	2,328		4,613	3,377
Repurchase agreements extinguishment costs	6,625			6,625
Other operating expense	21,463	20,941		42,219	39,116
Total noninterest expense	120,170	120,539	[1]	248,200	240,493	[1]
INCOME BEFORE INCOME TAXES	144,421	122,966	[1]	291,247	239,129	[1]
INCOME TAX EXPENSE	45,673	38,661	[1]	92,472	80,653	[1]
NET INCOME	$ 98,748	$ 84,305	[1]	$ 198,775	$ 158,476	[1]
EARNINGS PER SHARE
BASIC (in dollars per share)	$ 0.69	$ 0.59	[1]	$ 1.38	$ 1.11	[1]
DILUTED (in dollars per share)	$ 0.68	$ 0.59	[1]	$ 1.38	$ 1.11	[1]
WEIGHTED AVERAGE NUMBER OF SHARES OUTSTANDING
BASIC (in shares)	143,846	143,187		143,751	142,578
DILUTED (in shares)	144,480	143,689		144,408	143,158
DIVIDENDS DECLARED PER COMMON SHARE (in dollars per share)	$ 0.20	$ 0.18		$ 0.40	$ 0.36

[1] Prior periods were restated to reflect the retrospective application of adopting the new accounting guidance related to the Company's investments in qualified affordable housing projects Accounting Standards Update ("ASU") 2014-01. See Note 10 of the Notes to Consolidated Financial Statements for additional information.