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LOANS AND ALLOWANCE FOR LOAN LOSSES - Summary of TDR Modification Type (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($) loan	Dec. 31, 2018 USD ($) loan	Dec. 31, 2017 USD ($) loan
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	14	3	4
Pre- Modification Outstanding Recorded Investment	$ 21,726	$ 358	$ 5,122
Post-Modification Outstanding Recorded Investment	$ 16,734	$ 350	$ 5,139
Change in Principal Payments and Interest Rates
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	14	0	2
Post-Modification Outstanding Recorded Investment	$ 16,734	$ 0	$ 1,290
Change in Principal Payments
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	0	2	2
Post-Modification Outstanding Recorded Investment	$ 0	$ 163	$ 3,849
Change in Interest Rates
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	0	0	0
Post-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 0
Chapter 7 Bankruptcy
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	0	0	0
Post-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 0
Other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	0	1	0
Post-Modification Outstanding Recorded Investment	$ 0	$ 187	$ 0
Commercial | Commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	12	2	1
Pre- Modification Outstanding Recorded Investment	$ 18,512	$ 171	$ 2,706
Post-Modification Outstanding Recorded Investment	$ 15,865	$ 163	$ 2,706
Commercial | Commercial and industrial | Change in Principal Payments and Interest Rates
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	12	0	0
Post-Modification Outstanding Recorded Investment	$ 15,865	$ 0	$ 0
Commercial | Commercial and industrial | Change in Principal Payments
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	0	2	1
Post-Modification Outstanding Recorded Investment	$ 0	$ 163	$ 2,706
Commercial | Commercial and industrial | Change in Interest Rates
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	0	0	0
Post-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 0
Commercial | Commercial and industrial | Chapter 7 Bankruptcy
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	0	0	0
Post-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 0
Commercial | Commercial and industrial | Other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	0	0	0
Post-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 0
Commercial | SBA
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	2	1	0
Pre- Modification Outstanding Recorded Investment	$ 3,214	$ 187	$ 0
Post-Modification Outstanding Recorded Investment	$ 869	$ 187	$ 0
Commercial | SBA | Change in Principal Payments and Interest Rates
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	2
Post-Modification Outstanding Recorded Investment	$ 869
Commercial | SBA | Change in Principal Payments
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	0
Post-Modification Outstanding Recorded Investment	$ 0
Commercial | SBA | Change in Interest Rates
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	0
Post-Modification Outstanding Recorded Investment	$ 0
Commercial | SBA | Chapter 7 Bankruptcy
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	0
Post-Modification Outstanding Recorded Investment	$ 0
Commercial | SBA | Other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	0
Post-Modification Outstanding Recorded Investment	$ 0
Commercial | Single family residential mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan		1
Post-Modification Outstanding Recorded Investment		$ 187
Commercial | Single family residential mortgage | Change in Principal Payments and Interest Rates
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan		0
Post-Modification Outstanding Recorded Investment		$ 0
Commercial | Single family residential mortgage | Change in Principal Payments
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan		0
Post-Modification Outstanding Recorded Investment		$ 0
Commercial | Single family residential mortgage | Change in Interest Rates
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan		0
Post-Modification Outstanding Recorded Investment		$ 0
Commercial | Single family residential mortgage | Chapter 7 Bankruptcy
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan		0
Post-Modification Outstanding Recorded Investment		$ 0
Commercial | Single family residential mortgage | Other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan		1
Post-Modification Outstanding Recorded Investment		$ 187
Consumer | Single family residential mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	0	0	3
Pre- Modification Outstanding Recorded Investment	$ 0	$ 0	$ 2,416
Post-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 2,433
Consumer | Single family residential mortgage | Change in Principal Payments and Interest Rates
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	0		2
Post-Modification Outstanding Recorded Investment	$ 0		$ 1,290
Consumer | Single family residential mortgage | Change in Principal Payments
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	0		1
Post-Modification Outstanding Recorded Investment	$ 0		$ 1,143
Consumer | Single family residential mortgage | Change in Interest Rates
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	0		0
Post-Modification Outstanding Recorded Investment	$ 0		$ 0
Consumer | Single family residential mortgage | Chapter 7 Bankruptcy
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	0		0
Post-Modification Outstanding Recorded Investment	$ 0		$ 0
Consumer | Single family residential mortgage | Other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	0		0
Post-Modification Outstanding Recorded Investment	$ 0		$ 0

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
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