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LOANS AND LEASES AND ALLOWANCE FOR LOAN AND LEASE LOSSES - Summary of TDR Modification Type (Details)	3 Months Ended	9 Months Ended
	Sep. 30, 2018 USD ($)	Sep. 30, 2018 USD ($) Loan	Sep. 30, 2017 USD ($) Loan
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	$ 0
Commercial
Financing Receivable, Modifications [Line Items]
Number of Loans | Loan		2
Post-Modification Outstanding Recorded Investment		$ 163,000
Commercial | Change in Principal Payments and Interest Rates
Financing Receivable, Modifications [Line Items]
Number of Loans | Loan		0
Post-Modification Outstanding Recorded Investment		$ 0
Commercial | Change in Principal Payments
Financing Receivable, Modifications [Line Items]
Number of Loans | Loan		2
Post-Modification Outstanding Recorded Investment		$ 163,000
Commercial | Commercial and industrial
Financing Receivable, Modifications [Line Items]
Number of Loans | Loan		2
Post-Modification Outstanding Recorded Investment		$ 163,000
Commercial | Commercial and industrial | Change in Principal Payments and Interest Rates
Financing Receivable, Modifications [Line Items]
Number of Loans | Loan		0
Post-Modification Outstanding Recorded Investment		$ 0
Commercial | Commercial and industrial | Change in Principal Payments
Financing Receivable, Modifications [Line Items]
Number of Loans | Loan		2
Post-Modification Outstanding Recorded Investment		$ 163,000
Consumer
Financing Receivable, Modifications [Line Items]
Number of Loans | Loan			3
Post-Modification Outstanding Recorded Investment			$ 2,433,000
Consumer | Change in Principal Payments and Interest Rates
Financing Receivable, Modifications [Line Items]
Number of Loans | Loan			2
Post-Modification Outstanding Recorded Investment			$ 1,290,000
Consumer | Change in Principal Payments
Financing Receivable, Modifications [Line Items]
Number of Loans | Loan			1
Post-Modification Outstanding Recorded Investment			$ 1,143,000
Consumer | Single family residential mortgage
Financing Receivable, Modifications [Line Items]
Number of Loans | Loan			3
Post-Modification Outstanding Recorded Investment			$ 2,433,000
Consumer | Single family residential mortgage | Change in Principal Payments and Interest Rates
Financing Receivable, Modifications [Line Items]
Number of Loans | Loan			2
Post-Modification Outstanding Recorded Investment			$ 1,290,000
Consumer | Single family residential mortgage | Change in Principal Payments
Financing Receivable, Modifications [Line Items]
Number of Loans | Loan			1
Post-Modification Outstanding Recorded Investment			$ 1,143,000

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953676-111524

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-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
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