Consolidated Statements of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Interest Income
Loans, including fees	$ 390,983	$ 377,802	$ 341,268
Securities:
Taxable	43,504	46,839	41,956
Nontaxable	5,667	6,680	7,469
Dividends	103	375	157
Other	129	210	275
Total Interest Income	440,386	431,906	391,125
Interest Expense
Deposits	29,441	42,513	53,535
Short-term borrowings	4,423	5,162	6,711
Long-term debt	3,115	3,492	6,403
Junior subordinated debt	7,365	7,888	7,968
Total Interest Expense	44,344	59,055	74,617
Net Interest Income	396,042	372,851	316,508
Provision for loan losses	31,090	31,302	33,641
Net Interest Income After Provision for Loan Losses	364,952	341,549	282,867
Non-Interest Income
Impairment losses on securities	(27)	(626)	(895)
Non-credit related losses on securities not expected to be sold (recognized in other comprehensive income)		414	829
Net impairment losses on securities	(27)	(212)	(66)
Service charges	68,221	69,546	61,358
Trust	16,751	15,239	14,782
Insurance commissions and fees	16,598	16,426	15,185
Securities commissions and fees	11,286	8,395	7,562
Bank owned life insurance	6,874	6,485	5,191
Mortgage banking	3,452	4,153	3,101
Gain on sale of securities	808	305	3,652
Other	11,815	10,915	8,965
Total Non-Interest Income	135,778	131,252	119,730
Non-Interest Expense
Salaries and employee benefits	179,971	168,219	149,817
Net occupancy	26,474	24,578	21,805
Equipment	25,214	22,320	19,033
Amortization of intangibles	8,407	8,924	7,040
Outside services	30,257	28,038	21,840
FDIC insurance	10,192	8,077	8,025
Supplies	6,887	6,441	4,938
State taxes	4,256	6,162	6,975
Telephone	5,063	5,697	4,957
Advertising and promotional	6,349	4,991	6,375
Loan related	3,945	3,363	5,353
Other real estate owned	3,215	3,268	5,218
Merger related	8,210	7,394	4,982
Other	19,730	21,146	17,188
Total Non-Interest Expense	338,170	318,618	283,546
Income Before Income Taxes	162,560	154,183	119,051
Income taxes	44,756	43,773	32,004
Net Income	117,804	110,410	87,047
Preferred stock dividends
Net Income Available to Common Stockholders	$ 117,804	$ 110,410	$ 87,047
Net Income per Common Share
Basic	$ 0.81	$ 0.79	$ 0.70
Diluted	$ 0.80	$ 0.79	$ 0.70
Cash Dividends Paid per Common Share	$ 0.48	$ 0.48	$ 0.48