CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Interest income:
Interest and fees on loans	$ 77,669	$ 40,132	$ 38,921
Interest and dividends on investment securities:
Taxable	12,024	12,189	12,269
Nontaxable	3,740	4,422	3,507
Dividends	636	523	567
Interest on federal funds sold and other short-term investment	138	2	8
Total interest income	94,207	57,268	55,272
Interest expense:
Deposits	8,260	5,219	5,408
Borrowings	6,548	5,863	6,368
Total interest expense	14,808	11,082	11,776
Net interest income	79,399	46,186	43,496
Provision for loan losses	4,683	350	325
Net interest income after provision for loan losses	74,716	45,836	43,171
Noninterest income:
Annuity and insurance	382	489	204
Bank-owned life insurance commissions	1,303	1,364	1,018
Net gains on sale of loans held for sale	182	294	484
Bargain gain on acquisition			899
Deposit, loan and other income	2,813	2,993	2,593
Total other-than-temporary impairment losses		(652)	(870)
Net gains on sale of investment securities	2,818	2,363	2,882
Net investment securities gains	2,818	1,711	2,012
Total noninterest income	7,498	6,851	7,210
Noninterest expense:
Salaries and employee benefits	18,829	13,465	12,571
Occupancy and equipment	5,312	3,518	2,987
FDIC Insurance	1,618	1,098	1,154
Professional and consulting	1,661	1,111	1,077
Marketing and advertising	498	304	186
Data processing	2,575	1,422	1,419
Repurchase agreement prepayment and termination fee			1,012
Merger-related expenses	12,388		482
Loss on extinguishment of debt	4,550
Amortization of core deposit intangible	506	30
Charge due to wire fraud	2,374
Other expenses	4,493	4,330	4,309
Total noninterest expenses	54,804	25,278	25,197
Income before income tax expense	27,410	27,409	25,184
Income tax expense	8,845	7,484	7,677
Net income	18,565	19,925	17,507
Less: Preferred stock dividends and accretion	112	141	281
Net income available to common stockholders	$ 18,453	$ 19,784	$ 17,226
Earnings per common share:
Basic (in Dollars per share)	$ 0.80	$ 1.21	$ 1.05
Diluted (in Dollars per share)	$ 0.79	$ 1.21	$ 1.05
Weighted average common shares outstanding:
Basic (in Shares)	23,029,813	16,349,204	16,340,197
Diluted (in Shares)	23,479,074	16,385,692	16,351,046
Dividends per common share (in Dollars per share)	$ 0.300	$ 0.280	$ 0.195