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LOANS AND ALLOWANCE FOR LOAN LOSSES - Summary of Credit Exposure (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017	Jun. 30, 2017
Financing Receivable, Recorded Investment [Line Items]
Total loans	$ 1,593,474	$ 1,359,544	$ 1,296,843
Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,573,038	1,329,802
Special mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	11,217	23,213
Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	9,219	6,529
Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Total loans	234,396	197,508	217,497
Commercial and industrial | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	231,884	196,890
Commercial and industrial | Special mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,585	348
Commercial and industrial | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	927	270
Construction and development
Financing Receivable, Recorded Investment [Line Items]
Total loans	211,745	196,774	177,600
Construction and development | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	210,839	196,515
Construction and development | Special mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	906	259
Construction and development | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Total loans	570,448	418,137	378,722
Commercial real estate | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	557,319	412,488
Commercial real estate | Special mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	6,572	1,135
Commercial real estate | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	6,557	4,514
Farmland
Financing Receivable, Recorded Investment [Line Items]
Total loans	68,272	59,023	63,839
Farmland | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	67,901	58,623
Farmland | Special mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	52	226
Farmland | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	319	174
1-4 family residential
Financing Receivable, Recorded Investment [Line Items]
Total loans	392,940	374,371	356,457
1-4 family residential | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	391,447	373,154
1-4 family residential | Special mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	648	442
1-4 family residential | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	845	775
Multi-family residential
Financing Receivable, Recorded Investment [Line Items]
Total loans	39,023	36,574	28,833
Multi-family residential | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	37,768	16,073
Multi-family residential | Special mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,255	20,284
Multi-family residential | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	217
Consumer and Overdrafts
Financing Receivable, Recorded Investment [Line Items]
Total loans	53,288	51,561
Consumer and Overdrafts | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	53,219	51,409
Consumer and Overdrafts | Special mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	49	65
Consumer and Overdrafts | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	20	87
Agricultural
Financing Receivable, Recorded Investment [Line Items]
Total loans	23,362	25,596	$ 21,854
Agricultural | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	22,661	24,650
Agricultural | Special mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	150	454
Agricultural | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	$ 551	$ 492

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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://www.xbrl.org/2003/role/presentationRef
-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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