CONDENSED CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
INTEREST AND DIVIDEND INCOME
Loans receivable, including fees	$ 259,105	$ 232,195	$ 710,554	$ 691,270
Investment securities	11,039	10,380	30,843	48,525
Securities purchased under resale agreements	5,168	5,530	16,132	14,602
Investment in Federal Home Loan Bank stock	1,395	127	2,945	514
Investment in Federal Reserve Bank stock	723	719	2,164	2,146
Due from banks and short-term investments	4,276	5,211	12,844	17,517
Total interest and dividend income	281,706	254,162	775,482	774,574
INTEREST EXPENSE
Customer deposit accounts	15,099	18,202	47,691	57,543
Federal funds purchased				2
Federal Home Loan Bank advances	1,049	1,468	3,135	4,963
Securities sold under repurchase agreements	10,323	11,664	31,069	34,977
Long-term debt	985	920	2,402	3,106
Total interest expense	27,456	32,254	84,297	100,591
Net interest income before provision for loan losses	254,250	221,908	691,185	673,983
Provision for loan losses, excluding covered loans	4,535	13,321	12,050	46,395
(Reversal of) provision for loan losses on covered loans	(964)	5,179	4,848	5,705
Net interest income after provision for loan losses	250,679	203,408	674,287	621,883
NONINTEREST (LOSS) INCOME
Impairment loss on investment securities				(5,165)
Less: Noncredit-related impairment loss recorded in other comprehensive income				5,066
Net impairment loss on investment securities recognized in earnings				(99)
Decrease in FDIC indemnification asset and receivable	(74,456)	(26,757)	(154,260)	(72,520)
Branch fees	8,123	7,720	23,896	23,204
Net gain on sales of investment securities	1,084	93	12,006	647
Net gain on sale of fixed assets	993	40	1,345	113
Letters of credit fees and commissions	5,615	5,001	16,103	13,814
Foreign exchange income	2,940	2,165	8,925	4,524
Ancillary loan fees	2,125	1,817	6,811	6,013
Income from life insurance policies	952	982	2,820	2,931
Net gain on sales of loans	3,945	5,346	3,685	16,900
Other operating income	7,258	6,344	22,795	17,309
Total noninterest (loss) income	(41,421)	2,751	(55,874)	12,836
NONINTEREST EXPENSE
Compensation and employee benefits	41,482	40,509	129,239	129,781
Occupancy and equipment expense	14,697	14,162	42,211	40,737
Amortization of investments in affordable housing partnerships and other investments	4,693	3,378	14,040	12,269
Amortization of premiums on deposits acquired	2,347	2,734	7,131	8,445
Deposit insurance premiums and regulatory assessments	4,191	3,461	11,848	10,776
Loan related expenses	2,752	4,011	9,909	12,667
Other real estate owned expense (gain on sale)	157	2,683	(2,015)	18,034
Legal expense	9,001	8,213	18,912	19,536
Prepayment penalty for FHLB advances and other borrowings		42		3,699
Data processing	2,159	2,313	6,796	6,974
Deposit related expenses	1,635	1,388	4,725	4,472
Consulting expense	1,264	2,692	2,721	5,727
Other operating expenses	15,974	15,370	45,610	44,210
Total noninterest expense	100,352	100,956	291,127	317,327
INCOME BEFORE PROVISION FOR INCOME TAXES	108,906	105,203	327,286	317,392
PROVISION FOR INCOME TAXES	35,749	34,093	108,023	107,642
NET INCOME	73,157	71,110	219,263	209,750
PREFERRED STOCK DIVIDENDS		1,714	3,428	5,142
NET INCOME AVAILABLE TO COMMON STOCKHOLDERS	$ 73,157	$ 69,396	$ 215,835	$ 204,608
EARNINGS PER SHARE AVAILABLE TO COMMON STOCKHOLDERS
BASIC (in dollars per share)	$ 0.53	$ 0.49	$ 1.56	$ 1.42
DILUTED (in dollars per share)	$ 0.53	$ 0.48	$ 1.56	$ 1.40
WEIGHTED AVERAGE NUMBER OF SHARES OUTSTANDING
BASIC (in shares)	137,036	139,621	137,404	142,348
DILUTED (in shares)	137,467	145,358	140,199	148,051
DIVIDENDS DECLARED PER COMMON SHARE (in dollars per share)	$ 0.15	$ 0.10	$ 0.45	$ 0.30