LOANS AND ALLOWANCE FOR LOAN LOSSES - Troubled Debt Restructuring (Details) $ in Thousands	9 Months Ended	12 Months Ended
Sep. 30, 2019 USD ($) contract	Sep. 30, 2018 USD ($) contract	Dec. 31, 2018 USD ($) contract
Financing Receivable, Modifications [Line Items]
Total	$ 7,415		$ 1,196
Specific reserves on TDRs	$ 184		$ 0
Troubled Debt Restructurings:
Number of Contracts \| contract	4	2	4
Pre-Modification Outstanding Recorded Investment	$ 1,680	$ 93	$ 582
Post-Modification Outstanding Recorded Investment	$ 1,515	$ 93	$ 582
Commercial real estate
Troubled Debt Restructurings:
Number of Contracts \| contract	4
Pre-Modification Outstanding Recorded Investment	$ 1,680
Post-Modification Outstanding Recorded Investment	1,515
Commercial and industrial
Troubled Debt Restructurings:
Number of Contracts \| contract			3
Pre-Modification Outstanding Recorded Investment			$ 504
Post-Modification Outstanding Recorded Investment			$ 504
1-4 family residential
Troubled Debt Restructurings:
Number of Contracts \| contract		1	1
Pre-Modification Outstanding Recorded Investment		$ 15	$ 78
Post-Modification Outstanding Recorded Investment		$ 15	78
Farmland
Troubled Debt Restructurings:
Number of Contracts \| contract		1
Pre-Modification Outstanding Recorded Investment		$ 78
Post-Modification Outstanding Recorded Investment		$ 78
Nonaccrual TDRs
Financing Receivable, Modifications [Line Items]
Total	118		335
Performing TDRs
Financing Receivable, Modifications [Line Items]
Total	$ 7,297		$ 861

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Amount, after troubled debt restructuring, of modified financing receivable.

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Amount of financing receivable modified as troubled debt restructuring.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
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