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LOANS AND ALLOWANCE FOR LOAN LOSSES - Summary of TDR Modification Type (Details) - Commercial $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019 USD ($) loan	Jun. 30, 2018 USD ($) loan	Jun. 30, 2019 USD ($) loan	Jun. 30, 2018 USD ($) loan
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	12	0	12	2
Post-Modification Outstanding Recorded Investment | $	$ 17,889	$ 0	$ 17,889	$ 163
Change in Principal Payments and Interest Rates
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	12	0	12	0
Post-Modification Outstanding Recorded Investment | $	$ 17,889	$ 0	$ 17,889	$ 0
Change in Principal Payments
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	0	0	0	2
Post-Modification Outstanding Recorded Investment | $	$ 0	$ 0	$ 0	$ 163
Commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	10	0	10	2
Post-Modification Outstanding Recorded Investment | $	$ 17,020	$ 0	$ 17,020	$ 163
Commercial and industrial | Change in Principal Payments and Interest Rates
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	10		10	0
Post-Modification Outstanding Recorded Investment | $	$ 17,020		$ 17,020	$ 0
Commercial and industrial | Change in Principal Payments
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	0		0	2
Post-Modification Outstanding Recorded Investment | $	$ 0		$ 0	$ 163
SBA
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	2		2
Post-Modification Outstanding Recorded Investment | $	$ 869		$ 869
SBA | Change in Principal Payments and Interest Rates
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	2		2
Post-Modification Outstanding Recorded Investment | $	$ 869		$ 869
SBA | Change in Principal Payments
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	0		0
Post-Modification Outstanding Recorded Investment | $	$ 0		$ 0

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

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953676-111524

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

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953676-111524

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