Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Interest Income
Interest and Fees on Loans and Leases	$ 94,621	$ 83,489	$ 273,467	$ 246,707
Income on Investment Securities
Available-for-Sale	11,987	10,313	34,906	31,648
Held-to-Maturity	20,334	19,315	59,958	59,874
Deposits	5	1	12	7
Funds Sold	1,579	695	3,165	2,066
Other	235	166	673	531
Total Interest Income	128,761	113,979	372,181	340,833
Interest Expense
Deposits	6,663	3,232	15,352	9,199
Securities Sold Under Agreements to Repurchase	4,664	5,713	14,928	18,000
Funds Purchased	0	3	42	9
Short-term Borrowings	0	0	64	0
Other Debt	1,117	1,119	3,327	3,139
Total Interest Expense	12,444	10,067	33,713	30,347
Net Interest Income	116,317	103,912	338,468	310,486
Provision for Credit Losses	4,000	2,500	12,650	1,500
Net Interest Income After Provision for Credit Losses	112,317	101,412	325,818	308,986
Noninterest Income
Trust and Asset Management	11,050	11,008	34,325	34,971
Mortgage Banking	3,237	6,362	10,356	13,639
Service Charges on Deposit Accounts	8,188	8,524	24,522	25,117
Fees, Exchange, and Other Service Charges	13,764	14,023	41,061	41,445
Investment Securities Gains (Losses), Net	(566)	(328)	11,047	10,540
Annuity and Insurance	1,429	1,653	5,585	5,560
Bank-Owned Life Insurance	1,861	1,911	4,908	5,010
Other	3,447	4,961	11,758	14,558
Total Noninterest Income	42,410	48,114	143,562	150,840
Noninterest Expense
Salaries and Benefits	51,626	49,725	153,341	150,528
Net Occupancy	7,727	8,510	24,026	22,671
Net Equipment	5,417	4,913	16,624	15,387
Data Processing	3,882	3,620	11,173	11,543
Professional Fees	3,044	2,396	8,415	7,082
FDIC Insurance	2,107	2,104	6,413	6,600
Other	14,795	16,264	45,363	47,178
Total Noninterest Expense	88,598	87,532	265,355	260,989
Income Before Provision for Income Taxes	66,129	61,994	204,025	198,837
Provision for Income Taxes	20,248	18,501	62,306	60,889
Net Income	$ 45,881	$ 43,493	$ 141,719	$ 137,948
Basic Earnings Per Share (in dollars per share)	$ 1.09	$ 1.02	$ 3.35	$ 3.23
Diluted Earnings Per Share (in dollars per share)	1.08	1.02	3.32	3.21
Dividends Declared Per Share (in dollars per share)	$ 0.52	$ 0.48	$ 1.52	$ 1.41
Basic Weighted Average Shares (in shares)	42,251,541	42,543,122	42,336,441	42,730,571
Diluted Weighted Average Shares (in shares)	42,565,364	42,778,346	42,662,163	42,947,059