CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Interest income:
Interest and fees on loans	$ 125,493	$ 77,669	$ 40,132
Interest and dividends on investment securities:
Taxable	10,665	12,024	12,189
Nontaxable	3,550	3,740	4,422
Dividends	1,081	636	523
Interest on federal funds sold and other short-term investment	178	138	2
Total interest income	140,967	94,207	57,268
Interest expense:
Deposits	13,756	8,260	5,219
Borrowings	10,058	6,548	5,863
Total interest expense	23,814	14,808	11,082
Net interest income	117,153	79,399	46,186
Provision for loan and lease losses	12,605	4,683	350
Net interest income after provision for loan and lease losses	104,548	74,716	45,836
Noninterest income:
Annuity and insurance	242	382	489
Bank-owned life insurance commissions	1,782	1,303	1,364
Net gains on sale of loans held for sale	327	182	294
Deposit, loan and other income	2,667	$ 2,813	$ 2,993
Insurance recovery	$ 2,224
Total other-than-temporary impairment losses			$ (652)
Net gains on sale of investment securities	$ 3,931	$ 2,818	2,363
Net investment securities gains	3,931	2,818	1,711
Total noninterest income	11,173	7,498	6,851
Noninterest expense:
Salaries and employee benefits	27,685	18,829	13,465
Occupancy and equipment	7,587	5,312	3,518
FDIC insurance	2,110	1,618	1,098
Professional and consulting	2,951	1,661	1,111
Marketing and advertising	847	498	304
Data processing	$ 3,703	2,575	$ 1,422
Merger-related expenses		12,388
Loss on extinguishment of debt	$ 2,397	4,550
Amortization of core deposit intangible	$ 917	506	$ 30
Charge due to wire fraud		2,374
Other expenses	$ 6,287	4,493	$ 4,330
Total noninterest expenses	54,484	54,804	25,278
Income before income tax expense	61,237	27,410	27,409
Income tax expense	19,926	8,845	7,484
Net income	41,311	18,565	19,925
Less: Preferred stock dividends	112	112	141
Net income available to common stockholders	$ 41,199	$ 18,453	$ 19,784
Earnings per common share:
Basic (in Dollars per share)	$ 1.38	$ 0.80	$ 1.21
Diluted (in Dollars per share)	$ 1.36	$ 0.79	$ 1.21
Weighted average common shares outstanding:
Basic (in Shares)	29,938,458	23,029,813	16,349,204
Diluted (in Shares)	30,283,966	23,479,074	16,385,692
Dividend per common share (in Dollars per share)	$ 0.3	$ 0.3	$ 0.28