Consolidated Statements Of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Interest Income
Loans, including fees	$ 377,802	$ 341,268	$ 322,773
Securities:
Taxable	46,839	41,956	43,150
Nontaxable	6,680	7,469	7,299
Dividends	375	157	71
Other	210	275	428
Total Interest Income	431,906	391,125	373,721
Interest Expense
Deposits	42,513	53,535	64,524
Short-term borrowings	5,162	6,711	8,143
Long-term debt	3,492	6,403	8,080
Junior subordinated debt	7,888	7,968	7,984
Total Interest Expense	59,055	74,617	88,731
Net Interest Income	372,851	316,508	284,990
Provision for loan losses	31,302	33,641	47,323
Net Interest Income After Provision for Loan Losses	341,549	282,867	237,667
Non-Interest Income
Impairment losses on securities	(626)	(895)	(9,590)
Non-credit related losses on securities not expected to be sold (recognized in other comprehensive income)	414	829	7,251
Net impairment losses on securities	(212)	(66)	(2,339)
Service charges	70,055	61,891	56,780
Insurance commissions and fees	16,426	15,185	15,772
Securities commissions and fees	8,395	7,562	6,839
Trust	15,239	14,782	12,719
Bank owned life insurance	6,485	5,191	4,941
Gain on sale of mortgage loans	3,887	2,768	3,762
Gain on sale of securities	305	3,652	2,960
Other	10,883	8,953	14,538
Total Non-Interest Income	131,463	119,918	115,972
Non-Interest Expense
Salaries and employee benefits	168,219	149,817	126,259
Net occupancy	24,578	21,805	20,049
Equipment	22,320	19,033	18,212
Amortization of intangibles	9,135	7,228	6,714
Outside services	28,038	21,840	22,628
FDIC insurance	8,077	8,025	10,526
Supplies	6,441	4,938	4,307
State taxes	6,162	6,975	7,278
Telephone	5,697	4,957	4,538
Advertising and promotional	4,991	6,375	5,161
Loan related	3,363	5,353	4,664
Other real estate owned	3,268	5,218	4,886
Merger related	7,394	4,982	620
Other	21,146	17,188	15,261
Total Non-Interest Expense	318,829	283,734	251,103
Income Before Income Taxes	154,183	119,051	102,536
Income taxes	43,773	32,004	27,884
Net Income	$ 110,410	$ 87,047	$ 74,652
Net Income per Common Share
Basic	$ 0.79	$ 0.70	$ 0.66
Diluted	$ 0.79	$ 0.70	$ 0.65
Cash Dividends Paid per Common Share	$ 0.48	$ 0.48	$ 0.48