Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
INTEREST INCOME:
Interest and fees on loans and leases	$ 58,328	$ 49,311	$ 167,201	$ 143,796
Interest on securities:
Taxable	5,858	7,547	19,729	22,755
Nontaxable	3,077	3,249	8,867	10,079
Interest on federal funds sold	1	1	3	1
Interest on interest bearing deposits in other financial institutions	4	6	11	20
TOTAL INTEREST INCOME	67,268	60,114	195,811	176,651
INTEREST EXPENSE:
Interest on deposits	3,767	4,655	11,758	14,010
Interest on short-term borrowings	228	227	638	655
Interest on other borrowings (includes $557 and $577 of interest expense related to derivatives reclassified from accumulated other comprehensive income for the three months ended September 30, 2015 and 2014, respectively, and $1,680 and $1,671 of interest expense related to derivatives reclassified from accumulated other comprehensive income for the nine months ended September 30, 2015 and 2014, respectively)	3,549	3,741	12,117	11,084
TOTAL INTEREST EXPENSE	7,544	8,623	24,513	25,749
NET INTEREST INCOME	59,724	51,491	171,298	150,902
Provision for loan and lease losses	3,181	2,553	10,526	11,635
NET INTEREST INCOME AFTER PROVISION FOR LOAN AND LEASE LOSSES	56,543	48,938	160,772	139,267
NONINTEREST INCOME:
Service charges and fees	6,350	4,857	17,654	15,007
Loan servicing income	1,368	1,319	3,572	4,223
Trust fees	3,507	3,194	11,051	9,747
Brokerage and insurance commissions	869	1,044	2,872	3,325
Securities gains, net (includes $1,807 and $825 of net security gains reclassified from accumulated other comprehensive income for the three months ended September 30, 2015 and 2014, respectively, and $9,270 and $2,460 of net security gains reclassified from accumulated other comprehensive income for nine months ended September 30, 2015 and 2014, respectively)	1,767	825	9,230	2,460
Gain (loss) on trading account securities	0	0	0	(38)
Net gains on sale of loans held for sale	9,823	8,384	38,164	23,559
Income on bank owned life insurance	372	371	1,355	1,073
Other noninterest income	924	612	2,406	1,635
TOTAL NONINTEREST INCOME	24,980	20,606	86,304	60,991
NONINTEREST EXPENSES:
Salaries and employee benefits	37,033	33,546	110,522	98,428
Occupancy	4,307	3,807	12,594	11,841
Furniture and equipment	2,121	2,033	6,403	6,008
Professional fees	5,251	4,429	16,544	13,169
FDIC insurance assessments	1,018	888	2,873	2,848
Advertising	1,327	1,383	3,841	4,082
Intangible assets amortization	734	521	2,080	1,736
Other real estate and loan collection expenses	496	215	1,714	1,785
Loss on sales/valuations of assets, net	721	447	2,583	1,989
Other noninterest expenses	8,988	7,386	25,938	19,966
TOTAL NONINTEREST EXPENSES	61,996	54,655	185,092	161,852
INCOME BEFORE INCOME TAXES	19,527	14,889	61,984	38,406
Income taxes (includes $451 and $93 of income tax expense reclassified from accumulated other comprehensive income for the three months ended September 30, 2015 and 2014, respectively, and $2,816 and $296 of income tax expense reclassified from accumulated other comprehensive income for the nine months ended September 30, 2015 and 2014, respectively)	4,945	2,916	16,533	8,769
NET INCOME	14,582	11,973	45,451	29,637
Preferred dividends and discount	(205)	(205)	(613)	(613)
NET INCOME AVAILABLE TO COMMON STOCKHOLDERS	$ 14,377	$ 11,768	$ 44,838	$ 29,024
EARNINGS PER COMMON SHARE - BASIC (in dollars per share)	$ 0.70	$ 0.64	$ 2.19	$ 1.57
EARNINGS PER COMMON SHARE - DILUTED (in dollars per share)	0.69	0.63	2.16	1.55
CASH DIVIDENDS DECLARED PER COMMON SHARE (in dollars per share)	$ 0.10	$ 0.10	$ 0.30	$ 0.30