LOANS AND ALLOWANCE FOR LOAN LOSSES - Summary of Credit Exposure (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016	Jun. 30, 2016
Financing Receivable, Recorded Investment [Line Items]
Total loans	$ 1,296,843	$ 1,245,135	$ 1,185,161
Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,274,508	1,218,456
Special mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	10,316	11,791
Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	12,019	14,752
Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	136
Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Total loans	217,497	223,997	218,397
Commercial and industrial | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	212,162	218,975
Commercial and industrial | Special mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	3,977	4,299
Commercial and industrial | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,358	706
Commercial and industrial | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	17
Construction and development
Financing Receivable, Recorded Investment [Line Items]
Total loans	177,600	129,366	108,698
Construction and development | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	177,333	127,537
Construction and development | Special mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	267	4
Construction and development | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	1,825
Construction and development | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Total loans	378,722	367,656	347,432
Commercial real estate | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	373,861	360,264
Commercial real estate | Special mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,063	1,927
Commercial real estate | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	3,798	5,465
Commercial real estate | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Farmland
Financing Receivable, Recorded Investment [Line Items]
Total loans	63,839	62,362	66,174
Farmland | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	63,035	61,713
Farmland | Special mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	543	248
Farmland | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	261	401
Farmland | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
1-4 family residential
Financing Receivable, Recorded Investment [Line Items]
Total loans	356,457	362,952	334,569
1-4 family residential | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	348,212	353,483
1-4 family residential | Special mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	3,376	4,311
1-4 family residential | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	4,869	5,121
1-4 family residential | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	37
Multi-family residential
Financing Receivable, Recorded Investment [Line Items]
Total loans	28,833	26,079	36,860
Multi-family residential | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	28,592	25,871
Multi-family residential | Special mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Multi-family residential | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	241	208
Multi-family residential | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Consumer and Overdrafts
Financing Receivable, Recorded Investment [Line Items]
Total loans	52,041	53,822
Consumer and Overdrafts | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	50,917	52,648
Consumer and Overdrafts | Special mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	434	524
Consumer and Overdrafts | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	690	568
Consumer and Overdrafts | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	82
Agricultural
Financing Receivable, Recorded Investment [Line Items]
Total loans	21,854	18,901	$ 19,444
Agricultural | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	20,396	17,965
Agricultural | Special mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	656	478
Agricultural | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	802	458
Agricultural | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans	$ 0	$ 0