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LOANS AND ALLOWANCE FOR LOAN LOSSES - Summary of Payment Status of Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	$ 8,868	$ 11,700
Current Loans	1,244,275	1,233,435
Ending balance	1,253,143	1,245,135	$ 1,142,064
Recorded Investment 90 Days and Accruing	0	0
30 to 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	6,573	7,346
60 to 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	852	1,220
90 Days and Greater Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	1,443	3,134
Commercial and industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	671	1,071
Current Loans	205,232	222,926
Ending balance	205,903	223,997	216,929
Recorded Investment 90 Days and Accruing	0	0
Commercial and industrial | 30 to 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	460	941
Commercial and industrial | 60 to 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	181	105
Commercial and industrial | 90 Days and Greater Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	30	25
Construction and development
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	60	1,898
Current Loans	152,700	127,468
Ending balance	152,760	129,366	92,831
Recorded Investment 90 Days and Accruing	0	0
Construction and development | 30 to 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	60	73
Construction and development | 60 to 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	0	0
Construction and development | 90 Days and Greater Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	0	1,825
Commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	1,402	1,795
Current Loans	371,453	365,861
Ending balance	372,855	367,656	336,999
Recorded Investment 90 Days and Accruing	0	0
Commercial real estate | 30 to 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	1,225	1,629
Commercial real estate | 60 to 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	41	32
Commercial real estate | 90 Days and Greater Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	136	134
Farmland
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	114	133
Current Loans	62,016	62,229
Ending balance	62,130	62,362	54,321
Recorded Investment 90 Days and Accruing	0	0
Farmland | 30 to 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	114	100
Farmland | 60 to 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	0	26
Farmland | 90 Days and Greater Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	0	7
1-4 family residential
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	5,373	5,568
Current Loans	355,500	357,384
Ending balance	360,873	362,952	334,423
Recorded Investment 90 Days and Accruing	0	0
1-4 family residential | 30 to 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	3,867	3,724
1-4 family residential | 60 to 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	323	803
1-4 family residential | 90 Days and Greater Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	1,183	1,041
Multi-family residential
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	247	256
Current Loans	23,696	25,823
Ending balance	23,943	26,079	34,655
Recorded Investment 90 Days and Accruing	0	0
Multi-family residential | 30 to 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	49	207
Multi-family residential | 60 to 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	198	49
Multi-family residential | 90 Days and Greater Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	0	0
Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	785	905
Current Loans	52,031	52,600
Ending balance	52,816	53,505	51,552
Recorded Investment 90 Days and Accruing	0	0
Consumer | 30 to 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	610	613
Consumer | 60 to 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	95	205
Consumer | 90 Days and Greater Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	80	87
Agricultural
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	216	74
Current Loans	21,257	18,827
Ending balance	21,473	18,901	19,808
Recorded Investment 90 Days and Accruing	0	0
Agricultural | 30 to 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	188	59
Agricultural | 60 to 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	14	0
Agricultural | 90 Days and Greater Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	14	15
Overdrafts
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	0	0
Current Loans	390	317
Ending balance	390	317	$ 546
Recorded Investment 90 Days and Accruing	0	0
Overdrafts | 30 to 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	0	0
Overdrafts | 60 to 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	0	0
Overdrafts | 90 Days and Greater Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	$ 0	$ 0

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- Definition

Recorded investment in financing receivables that are 90 days or more past due and still accruing.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 7
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+ References

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-Publisher FASB
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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-SubTopic 10
-Section 45
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-URI http://asc.fasb.org/extlink&oid=82891408&loc=d3e4428-111522

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