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
Loans	$ 74,736	$ 57,807	$ 49,659
Other interest-earning assets	5,588	5,711	3,288
Total interest income	80,324	63,518	52,947
INTEREST EXPENSE
Deposits	5,037	4,065	5,853
FHLB advances and other borrowings	1,124	984	970
Subordinated debentures	1,543	307	326
Total interest expense	7,704	5,356	7,149
NET INTEREST INCOME BEFORE PROVISION FOR LOAN LOSSES	72,620	58,162	45,798
PROVISION FOR LOAN LOSSES	4,684	1,860	751
NET INTEREST INCOME AFTER PROVISION FOR LOAN LOSSES	67,936	56,302	45,047
NONINTEREST INCOME
Loan servicing fee income	2,490	1,192	941
Bank and other fee income	1,809	1,873	1,940
Net gain from loan sales	6,300	3,228	628
Net gain from investment securities	1,547	1,544	1,953
Other-than-temporary-impairment recovery (loss) on investment securities	29	(4)	(159)
Gain on FDIC transactions			5,340
Other income	2,217	1,260	1,929
Total noninterest income	14,392	9,093	12,572
NONINTEREST EXPENSE
Compensation and benefits	28,705	23,018	16,281
Premises and occupancy	6,608	5,797	4,070
Data processing	2,570	3,080	2,366
OREO operations, net	75	618	1,653
FDIC insurance premiums	1,021	749	638
Legal and audit	2,240	1,863	2,134
Marketing expense	1,208	1,088	858
Office and postage expense	1,576	1,313	830
Loan related expense	848	1,009	912
Deposit related expense	2,964	1,818	188
Merger related expense	1,490	6,926
Other expense	5,688	3,536	1,924
Total noninterest expense	54,993	50,815	31,854
NET INCOME BEFORE INCOME TAX	27,335	14,580	25,765
INCOME TAX	10,719	5,587	9,989
NET INCOME	$ 16,616	$ 8,993	$ 15,776
EARNINGS PER SHARE
Basic (in dollars per share)	$ 0.97	$ 0.57	$ 1.49
Diluted (in dollars per share)	$ 0.96	$ 0.54	$ 1.44
WEIGHTED AVERAGE SHARES OUTSTANDING
Basic (in shares)	17,046,660	15,798,885	10,571,073
Diluted (in shares)	17,343,977	16,609,954	10,984,034