BUSINESS SEGMENTS (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016 USD ($)	Jun. 30, 2015 USD ($)	Jun. 30, 2016 USD ($) segments	Jun. 30, 2015 USD ($)	Dec. 31, 2015 USD ($)
Number of Operating Segments | segments			2
Net interest income	$ 24,176	$ 20,344	$ 47,586	$ 39,927
Noninterest income	7,448	6,499	13,711	12,381
Total income	31,624	26,843	61,297	52,308
Provision for loan losses	2,200	2,200	3,900	3,550
Salaries and benefits	11,100	9,872	22,008	19,297
Premises and equipment	2,742	2,778	5,606	5,394
Other noninterest expense	4,933	3,616	10,367	7,343
Total noninterest expense	20,975	18,466	41,881	35,584
INCOME BEFORE INCOME TAX EXPENSE	10,649	8,377	19,416	16,724
Income tax expense	4,085	3,139	7,363	6,478
NET INCOME	6,564	5,238	12,053	10,246
Total assets at period end	3,604,703	3,118,170	3,604,703	3,118,170	$ 3,364,659
Banking [Member]
Net interest income	22,778	19,351	44,768	37,921
Noninterest income	2,432	1,896	4,312	3,673
Total income	25,210	21,247	49,080	41,594
Provision for loan losses	2,200	2,200	3,900	3,550
Salaries and benefits	9,033	7,830	17,845	15,370
Premises and equipment	2,507	2,549	5,144	4,934
Other noninterest expense	3,529	2,461	7,446	4,956
Total noninterest expense	17,269	15,040	34,335	28,810
INCOME BEFORE INCOME TAX EXPENSE	7,941	6,207	14,745	12,784
Income tax expense	3,032	2,294	5,546	4,945
NET INCOME	4,909	3,913	9,199	7,839
Total assets at period end	3,555,910	3,084,507	3,555,910	3,084,507
Wealth Management Division [Member]
Net interest income	1,398	993	2,818	2,006
Noninterest income	5,016	4,603	9,399	8,708
Total income	6,414	5,596	12,217	10,714
Provision for loan losses
Salaries and benefits	2,067	2,042	4,163	3,927
Premises and equipment	235	229	462	460
Other noninterest expense	1,404	1,155	2,921	2,387
Total noninterest expense	3,706	3,426	7,546	6,774
INCOME BEFORE INCOME TAX EXPENSE	2,708	2,170	4,671	3,940
Income tax expense	1,053	845	1,817	1,533
NET INCOME	1,655	1,325	2,854	2,407
Total assets at period end	$ 48,793	$ 33,663	$ 48,793	$ 33,663