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LOANS AND ALLOWANCE FOR LOAN LOSSES - Summary of Credit Exposure (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment [Line Items]
Total loans	$ 1,659,535	$ 1,359,544	$ 1,243,925
Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,642,415	1,329,802
Special mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	6,641	23,213
Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	10,479	6,529
Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Total loans	261,779	197,508	223,712
Commercial and industrial | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	260,863	196,890
Commercial and industrial | Special mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	224	348
Commercial and industrial | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	692	270
Commercial and industrial | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Construction and development
Financing Receivable, Recorded Investment [Line Items]
Total loans	237,503	196,774	129,631
Construction and development | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	236,253	196,515
Construction and development | Special mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	259
Construction and development | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,250	0
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	582,519	418,137	368,077
Commercial real estate | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	569,648	412,488
Commercial real estate | Special mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	5,691	1,135
Commercial real estate | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	7,180	4,514
Commercial real estate | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Farmland
Financing Receivable, Recorded Investment [Line Items]
Total loans	67,845	59,023	62,366
Farmland | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	67,541	58,623
Farmland | Special mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	49	226
Farmland | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	255	174
Farmland | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
1-4 family residential
Financing Receivable, Recorded Investment [Line Items]
Total loans	393,067	374,371	361,665
1-4 family residential | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	391,956	373,154
1-4 family residential | Special mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	514	442
1-4 family residential | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	597	775
1-4 family residential | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Multi-family residential
Financing Receivable, Recorded Investment [Line Items]
Total loans	38,386	36,574	26,079
Multi-family residential | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	38,386	16,073
Multi-family residential | Special mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	20,284
Multi-family residential | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	217
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	55,159	51,561
Consumer and Overdrafts | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	55,055	51,409
Consumer and Overdrafts | Special mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	48	65
Consumer and Overdrafts | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	56	87
Consumer and Overdrafts | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Agricultural
Financing Receivable, Recorded Investment [Line Items]
Total loans	23,277	25,596	$ 18,901
Agricultural | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	22,713	24,650
Agricultural | Special mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	115	454
Agricultural | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	449	492
Agricultural | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans	$ 0	$ 0

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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=82891408&loc=d3e4428-111522

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