LOANS AND ALLOWANCE FOR CREDIT LOSSES - Troubled Debt Restructuring (Details) $ in Thousands	6 Months Ended	12 Months Ended
Jun. 30, 2020 USD ($) contract	Jun. 30, 2019 USD ($) contract	Dec. 31, 2019 USD ($) contract
Financing Receivable, Modifications [Line Items]
Total	$ 7,311		$ 7,341
Specific reserves on TDRs	$ 0		$ 164
Troubled Debt Restructurings:
Number of Contracts \| contract	0	4	4
Pre-Modification Outstanding Recorded Investment		$ 1,680	$ 1,680
Post-Modification Outstanding Recorded Investment		$ 1,515	$ 1,515
Commercial real estate
Troubled Debt Restructurings:
Number of Contracts \| contract		4	4
Pre-Modification Outstanding Recorded Investment		$ 1,680	$ 1,680
Post-Modification Outstanding Recorded Investment		$ 1,515	1,515
Nonaccrual TDRs
Financing Receivable, Modifications [Line Items]
Total	$ 95		101
Performing TDRs
Financing Receivable, Modifications [Line Items]
Total	$ 7,216		$ 7,240

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Troubled Debt Restructuring [Abstract]

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

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Amount, before troubled debt restructuring, of financing receivable to be modified.

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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
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
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-Paragraph 33
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