LOANS AND ALLOWANCE FOR LOAN LOSSES - Troubled Debt Restructuring (Details) $ in Thousands	6 Months Ended	12 Months Ended
Jun. 30, 2019 USD ($) contract	Jun. 30, 2018 USD ($) contract	Dec. 31, 2018 USD ($) contract
Financing Receivable, Modifications [Line Items]
Total	$ 2,397		$ 1,196
Specific reserves on TDRs	$ 0		$ 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		1	3
Pre-Modification Outstanding Recorded Investment		$ 15	$ 504
Post-Modification Outstanding Recorded Investment		$ 15	$ 504
1-4 family residential
Troubled Debt Restructurings:
Number of Contracts \| contract		1	1
Pre-Modification Outstanding Recorded Investment		$ 78	$ 78
Post-Modification Outstanding Recorded Investment		$ 78	78
Nonaccrual TDRs
Financing Receivable, Modifications [Line Items]
Total	119		335
Performing TDRs
Financing Receivable, Modifications [Line Items]
Total	$ 2,278		$ 861

Troubled Debt Restructuring [Abstract]

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Amount of allowance for credit losses related to receivables which had been measured under a general allowance for credit losses methodology that are now identified as troubled debt restructurings.

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Number of financing receivables that have been modified by troubled debt restructurings.

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Post-modification amount of investment in financing receivables modified by troubled debt restructurings.

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The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings.

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