NONINTEREST INCOME AND EXPENSES - Summary of Noninterest Income and Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Noninterest income
Service charges on deposits	$ 2,626	$ 2,698	$ 7,483	$ 7,057
Trust income	967	820	2,764	2,464
Mortgage banking fees	2,138	1,885	4,962	4,248
Brokerage commissions and fees	351	463	1,079	1,564
Marine finance fees	137	138	597	558
Interchange income	2,582	2,306	7,747	6,893
Other deposit-based EFT fees	100	109	354	352
BOLI income	836	382	2,326	1,602
Other income	1,744	963	4,541	2,767
Noninterest Income	11,481	9,764	31,853	27,505
Securities gains (losses), net	(47)	225	(26)	361
TOTAL	11,434	9,989	31,827	27,866
Noninterest expense
Salaries and wages	15,627	14,337	49,371	41,620
Employee benefits	2,917	2,425	8,920	7,428
Outsourced data processing costs	3,231	3,198	9,956	10,440
Telephone/data lines	573	539	1,753	1,606
Occupancy	2,447	3,675	10,025	10,292
Furniture and equipment	1,191	1,228	4,261	3,509
Marketing	1,298	780	3,294	2,786
Legal and professional fees	2,560	2,213	7,968	7,226
FDIC assessments	548	517	1,768	1,704
Amortization of intangibles	839	728	2,397	1,767
Asset dispositions expense	117	219	306	469
Net loss (gain) on other real estate owned and repossessed assets	(414)	(96)	(599)	(348)
Early redemption cost for Federal Home Loan Bank borrowings	0	0	0	1,777
Other	3,427	3,672	11,312	10,308
TOTAL	$ 34,361	$ 33,435	$ 110,732	$ 100,584