Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Interest Income
Interest and Fees on Loans and Leases	$ 97,634	$ 87,937
Income on Investment Securities
Available-for-Sale	12,141	11,084
Held-to-Maturity	21,296	19,706
Deposits	18	5
Funds Sold	757	890
Other	300	230
Total Interest Income	132,146	119,852
Interest Expense
Deposits	7,581	3,691
Securities Sold Under Agreements to Repurchase	4,564	5,185
Funds Purchased	53	3
Short-term Borrowings	16	0
Other Debt	976	1,101
Total Interest Expense	13,190	9,980
Net Interest Income	118,956	109,872
Provision for Credit Losses	4,125	4,400
Net Interest Income After Provision for Credit Losses	114,831	105,472
Noninterest Income
Trust and Asset Management	11,181	11,479
Mortgage Banking	2,145	3,300
Service Charges on Deposit Accounts	7,129	8,325
Fees, Exchange, and Other Service Charges	14,333	13,332
Investment Securities Gains (Losses), Net	(666)	12,133
Annuity and Insurance	1,206	1,995
Bank-Owned Life Insurance	1,842	1,497
Other	6,865	3,855
Total Noninterest Income	44,035	55,916
Noninterest Expense
Salaries and Benefits	54,422	51,165
Net Occupancy	8,534	8,168
Net Equipment	5,527	5,501
Data Processing	3,891	3,410
Professional Fees	2,773	2,779
FDIC Insurance	2,157	2,209
Other	17,080	15,336
Total Noninterest Expense	94,384	88,568
Income Before Provision for Income Taxes	64,482	72,820
Provision for Income Taxes	10,442	21,644
Net Income	$ 54,040	$ 51,176
Basic Earnings Per Share (in dollars per share)	$ 1.29	$ 1.21
Diluted Earnings Per Share (in dollars per share)	1.28	1.20
Dividends Declared Per Share (in dollars per share)	$ 0.52	$ 0.5
Basic Weighted Average Shares (in shares)	42,038,573	42,406,006
Diluted Weighted Average Shares (in shares)	42,358,425	42,749,866