BUSINESS SEGMENTS (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016 USD ($)	Sep. 30, 2015 USD ($)	Sep. 30, 2016 USD ($) segments	Sep. 30, 2015 USD ($)	Dec. 31, 2015 USD ($)
Number of Operating Segments | segments			2
Net interest income	$ 24,269	$ 21,706	$ 71,855	$ 61,633
Noninterest income	7,535	5,610	21,246	17,991
Total income	31,804	27,316	93,101	79,624
Provision for loan losses	2,100	1,600	6,000	5,150
Salaries and benefits	11,515	10,322	33,523	29,619
Premises and equipment	2,736	2,785	8,342	8,179
Other noninterest expense	3,101	3,376	10,328	9,806
Total noninterest expense	20,266	18,499	62,147	54,083
INCOME BEFORE INCOME TAX EXPENSE	11,538	8,817	30,954	25,541
Income tax expense	4,422	3,434	11,785	9,912
NET INCOME	7,116	5,383	19,169	15,629
Total assets at period end	3,774,383	3,268,963	3,774,383	3,268,963	$ 3,364,659
Banking [Member]
Net interest income	23,194	20,697	67,962	58,618
Noninterest income	2,974	1,399	7,286	5,072
Total income	26,168	22,096	75,248	63,690
Provision for loan losses	2,100	1,600	6,000	5,150
Salaries and benefits	9,351	7,935	27,196	23,305
Premises and equipment	2,506	2,549	7,650	7,483
Other noninterest expense	2,738	2,699	10,184	7,654
Total noninterest expense	16,695	14,783	51,030	43,592
INCOME BEFORE INCOME TAX EXPENSE	9,473	7,313	24,218	20,098
Income tax expense	3,619	2,849	9,165	7,794
NET INCOME	5,854	4,464	15,053	12,304
Total assets at period end	3,729,004	3,233,455	3,729,004	3,233,455
Wealth Management Division [Member]
Net interest income	1,075	1,009	3,893	3,015
Noninterest income	4,561	4,211	13,960	12,919
Total income	5,636	5,220	17,853	15,934
Provision for loan losses
Salaries and benefits	2,164	2,387	6,327	6,314
Premises and equipment	230	236	692	696
Other noninterest expense	1,177	1,093	4,098	3,481
Total noninterest expense	3,571	3,716	11,117	10,491
INCOME BEFORE INCOME TAX EXPENSE	2,065	1,504	6,736	5,443
Income tax expense	803	585	2,620	2,118
NET INCOME	1,262	919	4,116	3,325
Total assets at period end	$ 45,379	$ 35,508	$ 45,379	$ 35,508