Consolidated Statements of Income and Comprehensive Income (Unaudited) (USD $) In Thousands, except Per Share data	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Interest income:
Interest and fees on loans, including held for sale	$ 107,904	$ 109,924	$ 222,460	$ 193,569
Investment securities
Taxable	22,176	25,602	43,661	50,472
Tax-exempt	3,137	3,288	6,332	6,627
Total investment securities interest	25,313	28,890	49,993	57,099
Total interest income	133,217	138,814	272,453	250,668
Interest on deposits:
Demand-interest bearing	177	149	361	301
Savings and money market accounts	7,398	7,873	15,243	15,474
Certificates and other time deposits	5,606	9,510	12,433	15,916
Interest on securities sold under agreements to repurchase	940	1,404	1,855	2,531
Interest on wholesale borrowings	1,653	3,111	3,292	9,285
Total interest expense	15,774	22,047	33,184	43,507
Net interest income	117,443	116,767	239,269	207,161
Provision for loan losses noncovered	10,138	20,366	27,156	45,859
Provision for loan losses covered	7,481	267	12,812	267
Net interest income after provision for loan losses	99,824	96,134	199,301	161,035
Other income:
Trust department income	5,863	5,574	11,377	10,855
Service charges on deposits	15,712	17,737	30,622	33,103
Credit card fees	13,510	12,242	25,717	23,800
ATM and other service fees	3,063	2,844	5,980	5,353
Bank owned life insurance income	3,015	2,886	8,256	8,538
Investment services and insurance	1,972	2,535	4,419	4,463
Investment securities gains, net	889	651	889	651
Loan sales and servicing income	2,609	2,975	7,621	6,212
Gain on George Washington acquisition			0	1,041
Other operating income	4,858	5,765	9,366	9,093
Total other income	51,491	53,209	104,247	103,109
Other expenses:
Salaries, wages, pension and employee benefits	56,713	51,899	116,583	100,055
Net occupancy expense	8,086	7,680	16,680	14,820
Equipment expense	6,816	6,735	13,652	12,785
Stationery, supplies and postage	2,750	2,696	5,455	5,389
Bankcard, loan processing and other costs	8,266	7,663	15,829	15,481
Professional services	5,940	7,845	11,734	13,082
Amortization of intangibles	543	669	1,086	903
FDIC expense	4,581	4,416	8,947	8,181
Other operating expense	16,373	16,120	34,548	29,040
Total other expenses	110,068	105,723	224,514	199,736
Income before income tax expense	41,247	43,620	79,034	64,408
Income tax expense	11,484	12,127	21,710	17,525
Net income	29,763	31,493	57,324	46,883
Other comprehensive income, net of taxes
Unrealized securities' gains (losses), net of taxes	17,198	16,889	17,536	21,365
Less: reclassification adjustment for securities' gains (losses) realized in income, net of taxes	578	423	578	423
Total other comprehensive gain (loss), net of taxes	16,620	16,466	16,958	20,942
Comprehensive income	46,383	47,959	74,282	67,825
Net income applicable to common shares	29,763	31,493	57,324	46,883
Net income used in diluted EPS calculation	$ 29,763	$ 31,493	$ 57,324	$ 46,883
Weighted average number of common shares outstanding - basic	109,138	98,968	108,954	93,400
Weighted average number of common shares outstanding - diluted	109,139	98,969	108,955	93,403
Basic earnings per share	$ 0.27	$ 0.32	$ 0.53	$ 0.50
Diluted earnings per share	$ 0.27	$ 0.32	$ 0.53	$ 0.50
Dividend per share	$ 0.16	$ 0.16	$ 0.32	$ 0.32