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LOANS AND LEASES AND ALLOWANCE FOR LOAN AND LEASE LOSSES - Summary of TDR Modification Type (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2018 USD ($) Loan	Mar. 31, 2017 USD ($) Loan
Commercial
Financing Receivable, Modifications [Line Items]
Number of Loans | Loan	2
Post-Modification Outstanding Recorded Investment | $	$ 163
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
Commercial | Change in Interest Rates
Financing Receivable, Modifications [Line Items]
Number of Loans | Loan	0
Post-Modification Outstanding Recorded Investment | $	$ 0
Commercial | Bankruptcy Discharges
Financing Receivable, Modifications [Line Items]
Number of Loans | Loan	0
Post-Modification Outstanding Recorded Investment | $	$ 0
Commercial | Commercial and industrial
Financing Receivable, Modifications [Line Items]
Number of Loans | Loan	2	0
Post-Modification Outstanding Recorded Investment | $	$ 163	$ 0
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
Commercial | Commercial and industrial | Change in Interest Rates
Financing Receivable, Modifications [Line Items]
Number of Loans | Loan	0
Post-Modification Outstanding Recorded Investment | $	$ 0
Commercial | Commercial and industrial | Bankruptcy Discharges
Financing Receivable, Modifications [Line Items]
Number of Loans | Loan	0
Post-Modification Outstanding Recorded Investment | $	$ 0
Consumer
Financing Receivable, Modifications [Line Items]
Number of Loans | Loan	2	2
Post-Modification Outstanding Recorded Investment | $	$ 163	$ 1,273
Consumer | Change in Principal Payments and Interest Rates
Financing Receivable, Modifications [Line Items]
Number of Loans | Loan		1
Post-Modification Outstanding Recorded Investment | $		$ 130
Consumer | Change in Principal Payments
Financing Receivable, Modifications [Line Items]
Number of Loans | Loan		1
Post-Modification Outstanding Recorded Investment | $		$ 1,143
Consumer | Change in Interest Rates
Financing Receivable, Modifications [Line Items]
Number of Loans | Loan		0
Post-Modification Outstanding Recorded Investment | $		$ 0
Consumer | Bankruptcy Discharges
Financing Receivable, Modifications [Line Items]
Number of Loans | Loan		0
Post-Modification Outstanding Recorded Investment | $		$ 0
Consumer | Single family residential mortgage
Financing Receivable, Modifications [Line Items]
Number of Loans | Loan	0	2
Post-Modification Outstanding Recorded Investment | $	$ 0	$ 1,273
Consumer | Single family residential mortgage | Change in Principal Payments and Interest Rates
Financing Receivable, Modifications [Line Items]
Number of Loans | Loan		1
Post-Modification Outstanding Recorded Investment | $		$ 130
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
Consumer | Single family residential mortgage | Change in Interest Rates
Financing Receivable, Modifications [Line Items]
Number of Loans | Loan		0
Post-Modification Outstanding Recorded Investment | $		$ 0
Consumer | Single family residential mortgage | Bankruptcy Discharges
Financing Receivable, Modifications [Line Items]
Number of Loans | Loan		0
Post-Modification Outstanding Recorded Investment | $		$ 0

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+ References

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-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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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-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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