Consolidated Statements of Income (unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Loans including fees:
Taxable	$ 71,572	$ 74,959
Nontaxable	3,004	2,943
Investment securities:
Taxable	13,722	14,726
Nontaxable	6,982	5,960
Money market and other interest-earning investments	49	6
Total interest income	95,329	98,594
Interest Expense
Deposits	3,493	3,563
Short-term borrowings	182	96
Other borrowings	6,011	3,942
Total interest expense	9,686	7,601
Net interest income	85,643	90,993
Provision for loan losses	91	1
Net interest income after provision for loan losses	85,552	90,992
Noninterest Income
Wealth management fees	8,121	8,520
Service charges on deposit accounts	9,639	11,045
Debit card and ATM fees	3,785	6,732
Mortgage banking revenue	2,920	2,963
Insurance premiums and commissions	13,121	12,113
Investment product fees	3,905	4,403
Company-owned life insurance	2,038	2,152
Net securities gains	1,106	2,683
Recognition of deferred gain on sale leaseback transactions	1,052	1,524
Change in FDIC indemnification asset	(655)	(968)
Other income	4,419	4,128
Total noninterest income	49,451	55,295
Noninterest Expense
Salaries and employee benefits	56,972	69,694
Occupancy	12,844	14,293
Equipment	2,893	3,904
Marketing	2,486	2,236
Data processing	7,123	6,590
Communication	1,864	2,744
Professional fees	3,368	3,132
Loan expense	1,333	1,326
Supplies	583	684
FDIC assessment	1,919	1,885
Other real estate owned expense	424	1,161
Amortization of intangibles	2,647	3,081
Other expense	3,899	5,426
Total noninterest expense	98,355	116,156
Income before income taxes	36,648	30,131
Income tax expense	9,671	9,225
Net income	$ 26,977	$ 20,906
Net income per common share - basic	$ 0.24	$ 0.18
Net income per common share - diluted	$ 0.24	$ 0.18
Weighted average number of common shares outstanding - basic	113,998	118,540
Weighted average number of common shares outstanding - diluted	114,563	119,076
Dividends per common share	$ 0.13	$ 0.12