Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
INTEREST INCOME:
Interest and fees on loans and leases	$ 68,425	$ 53,049
Interest on securities:
Taxable	8,735	7,132
Nontaxable	3,510	2,916
Interest on federal funds sold	10	1
Interest on interest bearing deposits in other financial institutions	4	4
TOTAL INTEREST INCOME	80,684	63,102
INTEREST EXPENSE:
Interest on deposits	4,173	4,172
Interest on short-term borrowings	329	198
Interest on other borrowings (includes $506 and $564 of interest expense related to derivatives reclassified from accumulated other comprehensive income (loss) for the three months ended March 31, 2016 and 2015, respectively.	3,475	4,802
TOTAL INTEREST EXPENSE	7,977	9,172
NET INTEREST INCOME	72,707	53,930
Provision for loan and lease losses	2,067	1,671
NET INTEREST INCOME AFTER PROVISION FOR LOAN AND LEASE LOSSES	70,640	52,259
NONINTEREST INCOME:
Service charges and fees	7,162	5,404
Loan servicing income	1,268	1,041
Trust fees	3,813	3,631
Brokerage and insurance commissions	1,022	1,087
Securities gains, net (includes $3,756 and $4,353 of net security gains reclassified from accumulated other comprehensive income for the three months ended March 31, 2016 and 2015, respectively.	3,526	4,353
Net gains on sale of loans held for sale	11,065	13,742
Income on bank owned life insurance	522	524
Other noninterest income	1,200	881
TOTAL NONINTEREST INCOME	29,578	30,663
NONINTEREST EXPENSES:
Salaries and employee benefits	41,714	36,638
Occupancy	5,003	4,259
Furniture and equipment	2,113	2,106
Professional fees	7,010	6,044
FDIC insurance assessments	1,168	956
Advertising	1,284	1,181
Intangible assets amortization	1,895	631
Other real estate and loan collection expenses	572	465
Loss on sales/valuations of assets, net	313	353
Other noninterest expenses	9,237	6,981
TOTAL NONINTEREST EXPENSES	70,309	59,614
INCOME BEFORE INCOME TAXES	29,909	23,308
Income taxes (includes $1,212 and $1,413 of income tax expense reclassified from accumulated other comprehensive income for the three months ended March 31, 2016 and 2015, respectively.	9,900	7,599
NET INCOME	20,009	15,709
Preferred dividends	(168)	(204)
NET INCOME AVAILABLE TO COMMON STOCKHOLDERS	$ 19,841	$ 15,505
EARNINGS PER COMMON SHARE - BASIC (in dollars per share)	$ 0.84	$ 0.77
EARNINGS PER COMMON SHARE - DILUTED (in dollars per share)	0.82	0.76
CASH DIVIDENDS DECLARED PER COMMON SHARE (in dollars per share)	$ 0.10	$ 0.10