Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Interest Income
Interest and Fees on Loans and Leases	$ 90,909	$ 82,323	$ 178,846	$ 163,218
Income on Investment Securities
Available-for-Sale	11,835	10,521	22,919	21,335
Held-to-Maturity	19,918	20,168	39,624	40,559
Deposits	2	2	7	6
Funds Sold	696	618	1,586	1,371
Other	208	153	438	365
Total Interest Income	123,568	113,785	243,420	226,854
Interest Expense
Deposits	4,998	3,081	8,689	5,967
Securities Sold Under Agreements to Repurchase	5,079	6,134	10,264	12,287
Funds Purchased	39	3	42	6
Short-term Borrowings	64	0	64	0
Other Debt	1,109	1,017	2,210	2,020
Total Interest Expense	11,289	10,235	21,269	20,280
Net Interest Income	112,279	103,550	222,151	206,574
Provision for Credit Losses	4,250	1,000	8,650	(1,000)
Net Interest Income After Provision for Credit Losses	108,029	102,550	213,501	207,574
Noninterest Income
Trust and Asset Management	11,796	12,707	23,275	23,963
Mortgage Banking	3,819	4,088	7,119	7,277
Service Charges on Deposit Accounts	8,009	8,150	16,334	16,593
Fees, Exchange, and Other Service Charges	13,965	13,978	27,297	27,422
Investment Securities Gains (Losses), Net	(520)	(312)	11,613	10,868
Annuity and Insurance	2,161	2,006	4,156	3,907
Bank-Owned Life Insurance	1,550	1,551	3,047	3,099
Other	4,456	4,351	8,311	9,597
Total Noninterest Income	45,236	46,519	101,152	102,726
Noninterest Expense
Salaries and Benefits	50,113	50,289	101,715	100,803
Net Occupancy	8,131	7,158	16,299	14,161
Net Equipment	5,706	5,065	11,207	10,474
Data Processing	3,881	3,972	7,291	7,923
Professional Fees	2,592	2,047	5,371	4,686
FDIC Insurance	2,097	2,144	4,306	4,496
Other	15,669	15,396	30,568	30,914
Total Noninterest Expense	88,189	86,071	176,757	173,457
Income Before Provision for Income Taxes	65,076	62,998	137,896	136,843
Provision for Income Taxes	20,414	18,753	42,058	42,388
Net Income	$ 44,662	$ 44,245	$ 95,838	$ 94,455
Basic Earnings Per Share (in dollars per share)	$ 1.05	$ 1.04	$ 2.26	$ 2.21
Diluted Earnings Per Share (in dollars per share)	1.05	1.03	2.24	2.19
Dividends Declared Per Share (in dollars per share)	$ 0.50	$ 0.48	$ 1.00	$ 0.93
Basic Weighted Average Shares (in shares)	42,353,976	42,729,731	42,379,730	42,825,369
Diluted Weighted Average Shares (in shares)	42,658,885	42,942,960	42,704,010	43,033,199