Consolidated Statements of Income (Unaudited) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Interest Income
Interest and Fees on Loans and Leases	$ 63,526	$ 62,820
Income on Investment Securities
Available-for-Sale	10,760	15,851
Held-to-Maturity	27,889	19,854
Deposits	3	3
Funds Sold	137	59
Other	302	284
Total Interest Income	102,617	98,871
Interest Expense
Deposits	2,358	2,646
Securities Sold Under Agreements to Repurchase	6,397	7,005
Funds Purchased	3	22
Long-Term Debt	626	638
Total Interest Expense	9,384	10,311
Net Interest Income	93,233	88,560
Provision for Credit Losses	0	0
Net Interest Income After Provision for Credit Losses	93,233	88,560
Noninterest Income
Trust and Asset Management	11,852	11,886
Mortgage Banking	2,005	6,411
Service Charges on Deposit Accounts	8,878	9,301
Fees, Exchange, and Other Service Charges	12,939	11,934
Investment Securities Gains, Net	2,160	0
Insurance	2,123	2,325
Bank-Owned Life Insurance	1,602	1,297
Other	3,209	4,624
Total Noninterest Income	44,768	47,778
Noninterest Expense
Salaries and Benefits	46,897	48,675
Net Occupancy	9,417	9,635
Net Equipment	4,603	4,577
Data Processing	3,649	3,266
Professional Fees	2,260	2,226
FDIC Insurance	2,076	1,949
Other	14,645	14,059
Total Noninterest Expense	83,547	84,387
Income Before Provision for Income Taxes	54,454	51,951
Provision for Income Taxes	15,862	15,971
Net Income	$ 38,592	$ 35,980
Basic Earnings Per Share (in dollars per share)	$ 0.87	$ 0.81
Diluted Earnings Per Share (in dollars per share)	$ 0.87	$ 0.81
Dividends Declared Per Share (in dollars per share)	$ 0.45	$ 0.45
Basic Weighted Average Shares (in shares)	44,193,267	44,545,092
Diluted Weighted Average Shares (in shares)	44,420,349	44,686,632