LOANS AND ALLOWANCE FOR LOAN LOSSES - Summary of Credit Exposure (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2016
Financing Receivable, Recorded Investment [Line Items]
Total loans	$ 1,307,375	$ 1,245,135	$ 1,229,341
Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,265,604	1,218,456
Special mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	30,252	11,791
Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	11,519	14,752
Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans		136
Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Total loans	192,663	223,997	224,617
Commercial and industrial | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	188,440	218,975
Commercial and industrial | Special mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	3,705	4,299
Commercial and industrial | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	518	706
Commercial and industrial | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans		17
Construction and development
Financing Receivable, Recorded Investment [Line Items]
Total loans	201,067	129,366	125,045
Construction and development | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	181,879	127,537
Construction and development | Special mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	19,188	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
Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Total loans	393,314	367,656	360,676
Commercial real estate | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	388,007	360,264
Commercial real estate | Special mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,030	1,927
Commercial real estate | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	4,277	5,465
Commercial real estate | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans		0
Farmland
Financing Receivable, Recorded Investment [Line Items]
Total loans	54,349	62,362	61,902
Farmland | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	53,649	61,713
Farmland | Special mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	413	248
Farmland | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	287	401
Farmland | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans		0
1-4 family residential
Financing Receivable, Recorded Investment [Line Items]
Total loans	365,889	362,952	348,401
1-4 family residential | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	357,814	353,483
1-4 family residential | Special mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	3,059	4,311
1-4 family residential | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	5,016	5,121
1-4 family residential | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans		37
Multi-family residential
Financing Receivable, Recorded Investment [Line Items]
Total loans	23,235	26,079	34,538
Multi-family residential | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	21,659	25,871
Multi-family residential | Special mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,348	0
Multi-family residential | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	228	208
Multi-family residential | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans		0
Consumer and Overdrafts
Financing Receivable, Recorded Investment [Line Items]
Total loans	52,409	53,822
Consumer and Overdrafts | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	51,631	52,648
Consumer and Overdrafts | Special mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	362	524
Consumer and Overdrafts | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	416	568
Consumer and Overdrafts | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans		82
Agricultural
Financing Receivable, Recorded Investment [Line Items]
Total loans	24,449	18,901	$ 19,223
Agricultural | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	22,525	17,965
Agricultural | Special mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,147	478
Agricultural | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	$ 777	458
Agricultural | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans		$ 0