Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
INTEREST INCOME:
Interest and fees on loans and leases	$ 69,809	$ 55,824	$ 138,234	$ 108,873
Interest on securities:
Taxable	7,952	6,739	16,687	13,871
Nontaxable	3,566	2,874	7,076	5,790
Interest on federal funds sold	1	1	11	2
Interest on interest bearing deposits in other financial institutions	3	3	7	7
TOTAL INTEREST INCOME	81,331	65,441	162,015	128,543
INTEREST EXPENSE:
Interest on deposits	4,021	3,819	8,194	7,991
Interest on short-term borrowings	519	212	848	410
Interest on other borrowings (includes $465 and $559 of interest expense related to derivatives reclassified from accumulated other comprehensive income for the three months ended June 30, 2016 and 2015, respectively, and $971 and $1,123 of interest expense related to derivatives reclassified from accumulated other comprehensive income for the six months ended June 30, 2016 and 2015, respectively)	3,673	3,766	7,148	8,568
TOTAL INTEREST EXPENSE	8,213	7,797	16,190	16,969
NET INTEREST INCOME	73,118	57,644	145,825	111,574
Provision for loan and lease losses	2,118	5,674	4,185	7,345
NET INTEREST INCOME AFTER PROVISION FOR LOAN AND LEASE LOSSES	71,000	51,970	141,640	104,229
NONINTEREST INCOME:
Service charges and fees	8,022	5,900	15,184	11,304
Loan servicing income	1,292	1,163	2,560	2,204
Trust fees	3,625	3,913	7,438	7,544
Brokerage and insurance commissions	886	916	1,908	2,003
Securities gains, net (includes $4,622 and $3,110 of net security gains reclassified from accumulated other comprehensive income for the three months ended June 30, 2016 and 2015, respectively, and $8,378 and $7,463 of net security gains reclassified from accumulated other comprehensive income for six months ended June 30, 2016 and 2015, respectively)	4,622	3,110	8,148	7,463
Net gains on sale of loans held for sale	11,270	14,599	22,335	28,341
Valuation allowance on commercial servicing rights	(46)	0	(46)	0
Income on bank owned life insurance	591	459	1,113	983
Other noninterest income	764	601	1,964	1,482
TOTAL NONINTEREST INCOME	31,026	30,661	60,604	61,324
NONINTEREST EXPENSES:
Salaries and employee benefits	41,985	36,851	83,699	73,489
Occupancy	5,220	4,028	10,223	8,287
Furniture and equipment	2,442	2,176	4,555	4,282
Professional fees	7,486	5,249	14,496	11,293
FDIC insurance assessments	1,120	899	2,288	1,855
Advertising	1,551	1,333	2,835	2,514
Intangible assets amortization	1,297	715	3,192	1,346
Other real estate and loan collection expenses	659	753	1,231	1,218
(Gain)/loss on sales/valuations of assets, net	(43)	1,509	270	1,862
Other noninterest expenses	9,303	9,969	18,540	16,950
TOTAL NONINTEREST EXPENSES	71,020	63,482	141,329	123,096
Income (loss) before taxes	31,006	19,149	60,915	42,457
Income taxes (includes $1,551 and $952 of income tax expense reclassified from accumulated other comprehensive income for the three months ended June 30, 2016 and 2015, respectively, and $2,763 and $2,365 of income tax expense reclassified from accumulated other comprehensive income for the six months ended June 30, 2016 and 2015, respectively)	10,036	3,989	19,936	11,588
NET INCOME	20,970	15,160	40,979	30,869
Preferred dividends	(52)	(204)	(220)	(408)
Interest expense on convertible preferred debt	31	0	31	0
NET INCOME AVAILABLE TO COMMON STOCKHOLDERS	$ 20,949	$ 14,956	$ 40,790	$ 30,461
EARNINGS PER COMMON SHARE - BASIC (in dollars per share)	$ 0.85	$ 0.73	$ 1.69	$ 1.49
EARNINGS PER COMMON SHARE - DILUTED (in dollars per share)	0.84	0.72	1.66	1.47
CASH DIVIDENDS DECLARED PER COMMON SHARE (in dollars per share)	$ 0.10	$ 0.10	$ 0.20	$ 0.20