LOANS AND THE ALLOWANCE FOR CREDIT LOSSES - Summary of Loans by Credit Quality Indicator (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment
Loans	$ 1,542,718	$ 1,514,209
First mortgage
Financing Receivable, Recorded Investment
Loans		409,936
Second mortgage
Financing Receivable, Recorded Investment
Loans		37,591
Owner occupied
Financing Receivable, Recorded Investment
Loans		226,573
Non-owner occupied
Financing Receivable, Recorded Investment
Loans		410,182
Residential
Financing Receivable, Recorded Investment
Loans		2,530
Commercial
Financing Receivable, Recorded Investment
Loans		50,003
Installment
Financing Receivable, Recorded Investment
Loans	4,813	5,790
All other loans
Financing Receivable, Recorded Investment
Loans	15	17
Unrated
Financing Receivable, Recorded Investment
Loans	434,905	444,789
Unrated | Installment
Financing Receivable, Recorded Investment
Loans	4,813	5,778
Unrated | All other loans
Financing Receivable, Recorded Investment
Loans	15	17
Pass
Financing Receivable, Recorded Investment
Loans	975,063	933,698
Pass-Watch
Financing Receivable, Recorded Investment
Loans	98,338	99,418
Special Mention
Financing Receivable, Recorded Investment
Loans	317	1,143
Sub-standard
Financing Receivable, Recorded Investment
Loans	34,095	35,161
Sub-standard | Installment
Financing Receivable, Recorded Investment
Loans		12
Commercial, financial and agricultural
Financing Receivable, Recorded Investment
Loans	276,915	257,078
Commercial, financial and agricultural | Unrated
Financing Receivable, Recorded Investment
Loans	99	102
Commercial, financial and agricultural | Pass
Financing Receivable, Recorded Investment
Loans	233,838	215,891
Commercial, financial and agricultural | Pass-Watch
Financing Receivable, Recorded Investment
Loans	25,422	24,215
Commercial, financial and agricultural | Special Mention
Financing Receivable, Recorded Investment
Loans	317	322
Commercial, financial and agricultural | Sub-standard
Financing Receivable, Recorded Investment
Loans	17,239	16,548
Municipal
Financing Receivable, Recorded Investment
Loans	113,875	114,509
Municipal | Pass
Financing Receivable, Recorded Investment
Loans	110,222	110,864
Municipal | Pass-Watch
Financing Receivable, Recorded Investment
Loans	3,653	2,824
Municipal | Special Mention
Financing Receivable, Recorded Investment
Loans		821
Real estate loans - residential
Financing Receivable, Recorded Investment
Loans	438,424	447,527
Real estate loans - residential | First mortgage
Financing Receivable, Recorded Investment
Loans	402,153	409,936
Real estate loans - residential | Second mortgage
Financing Receivable, Recorded Investment
Loans	36,271	37,591
Real estate loans - residential | Unrated | First mortgage
Financing Receivable, Recorded Investment
Loans	393,208	400,961
Real estate loans - residential | Unrated | Second mortgage
Financing Receivable, Recorded Investment
Loans	36,049	37,367
Real estate loans - residential | Pass | First mortgage
Financing Receivable, Recorded Investment
Loans	7,060	7,392
Real estate loans - residential | Pass-Watch | First mortgage
Financing Receivable, Recorded Investment
Loans	542	481
Real estate loans - residential | Pass-Watch | Second mortgage
Financing Receivable, Recorded Investment
Loans	222	224
Real estate loans - residential | Sub-standard | First mortgage
Financing Receivable, Recorded Investment
Loans	1,343	1,102
Real estate loans - commercial
Financing Receivable, Recorded Investment
Loans	672,712	636,755
Real estate loans - commercial | Owner occupied
Financing Receivable, Recorded Investment
Loans	245,110	226,573
Real estate loans - commercial | Non-owner occupied
Financing Receivable, Recorded Investment
Loans	427,602	410,182
Real estate loans - commercial | Pass | Owner occupied
Financing Receivable, Recorded Investment
Loans	205,107	186,494
Real estate loans - commercial | Pass | Non-owner occupied
Financing Receivable, Recorded Investment
Loans	385,105	369,566
Real estate loans - commercial | Pass-Watch | Owner occupied
Financing Receivable, Recorded Investment
Loans	25,561	25,492
Real estate loans - commercial | Pass-Watch | Non-owner occupied
Financing Receivable, Recorded Investment
Loans	41,426	38,706
Real estate loans - commercial | Sub-standard | Owner occupied
Financing Receivable, Recorded Investment
Loans	14,442	14,587
Real estate loans - commercial | Sub-standard | Non-owner occupied
Financing Receivable, Recorded Investment
Loans	1,071	1,910
Real estate loans - construction
Financing Receivable, Recorded Investment
Loans	35,964	52,533
Real estate loans - construction | Residential
Financing Receivable, Recorded Investment
Loans	2,388	2,530
Real estate loans - construction | Commercial
Financing Receivable, Recorded Investment
Loans	33,576	50,003
Real estate loans - construction | Installment
Financing Receivable, Recorded Investment
Loans	4,813
Real estate loans - construction | All other loans
Financing Receivable, Recorded Investment
Loans	15
Real estate loans - construction | Unrated | Residential
Financing Receivable, Recorded Investment
Loans	605	412
Real estate loans - construction | Unrated | Commercial
Financing Receivable, Recorded Investment
Loans	116	152
Real estate loans - construction | Pass | Residential
Financing Receivable, Recorded Investment
Loans	1,783	2,118
Real estate loans - construction | Pass | Commercial
Financing Receivable, Recorded Investment
Loans	31,948	41,373
Real estate loans - construction | Pass-Watch | Commercial
Financing Receivable, Recorded Investment
Loans	$ 1,512	7,476
Real estate loans - construction | Sub-standard | Commercial
Financing Receivable, Recorded Investment
Loans		$ 1,002