Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Interest Income
Interest and Fees on Loans and Leases	$ 103,189	$ 110,877	$ 319,027	$ 329,789
Income on Investment Securities
Available-for-Sale	14,558	17,512	45,845	46,016
Held-to-Maturity	15,967	18,796	51,942	62,866
Deposits	3	9	13	33
Funds Sold	149	656	787	2,830
Other	151	233	494	762
Total Interest Income	134,017	148,083	418,108	442,296
Interest Expense
Deposits	5,891	18,055	28,105	51,967
Securities Sold Under Agreements to Repurchase	3,622	4,257	11,667	13,451
Funds Purchased		146	90	815
Short-Term Borrowings	1	1	62	38
Other Debt	337	728	1,361	2,195
Total Interest Expense	9,851	23,187	41,285	68,466
Net Interest Income	124,166	124,896	376,823	373,830
Provision for Credit Losses	28,600	4,250	102,600	11,250
Net Interest Income After Provision for Credit Losses	95,566	120,646	274,223	362,580
Noninterest Income
Trust and Asset Management	10,752	10,930	32,217	33,076
Mortgage Banking	4,047	4,864	11,020	10,487
Service Charges on Deposit Accounts	6,027	7,592	18,575	22,239
Fees, Exchange, and Other Service Charges	12,296	14,900	34,913	43,360
Investment Securities Gains (Losses), Net	(1,121)	(1,469)	11,125	(3,080)
Annuity and Insurance	881	1,278	2,692	5,662
Bank-Owned Life Insurance	1,806	1,647	5,035	5,136
Other	7,046	6,765	23,574	18,756
Total Noninterest Income	41,734	46,507	139,151	135,636
Noninterest Expense
Salaries and Benefits	51,951	54,345	157,129	164,442
Net Occupancy	7,281	8,803	24,997	24,976
Net Equipment	9,223	7,637	25,874	21,365
Data Processing	4,691	4,676	13,895	13,929
Professional Fees	2,743	2,184	9,012	6,814
FDIC Insurance	1,282	1,257	4,296	3,816
Other	12,778	21,447	39,950	50,789
Total Noninterest Expense	89,949	100,349	275,153	286,131
Income Before Provision for Income Taxes	47,351	66,804	138,221	212,085
Provision for Income Taxes	9,511	14,752	26,731	44,315
Net Income	$ 37,840	$ 52,052	$ 111,490	$ 167,770
Basic Earnings Per Share (in dollars per share)	$ 0.95	$ 1.30	$ 2.81	$ 4.14
Diluted Earnings Per Share (in dollars per share)	0.95	1.29	2.80	4.11
Dividends Declared Per Share (in dollars per share)	$ 0.67	$ 0.65	$ 2.01	$ 1.92
Basic Weighted Average Shares (in shares)	39,745,120	40,190,508	39,710,252	40,554,036
Diluted Weighted Average Shares (in shares)	39,869,135	40,450,742	39,872,406	40,806,295