LOANS AND THE ALLOWANCE FOR LOAN LOSSES - Summary of unpaid principal balance of loans classified as TDRs (Details) $ in Thousands		3 Months Ended	6 Months Ended
Jun. 30, 2017 USD ($) loan	Jun. 30, 2018 USD ($) loan	Jun. 30, 2017 USD ($) loan	Jun. 30, 2018 USD ($) loan	Jun. 30, 2017 USD ($) loan	Dec. 31, 2017 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 5,348	$ 1,835	$ 5,348	$ 1,835	$ 5,348	$ 1,835
Allowance for loan associated with TDR	$ (459)	(1,040)	$ (459)	(1,040)	$ (459)	(722)
Net recorded investment		$ 795		$ 795		1,113
Number of contracts modified \| loan		0	0	0	2
Number of loans settled \| loan			2
Number of loans classified as TDRs \| loan	0
Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 5,348	$ 1,835	$ 5,348	$ 1,835	$ 5,348	1,835
Allowance for loan associated with TDR	$ (459)	$ (1,040)	$ (459)	$ (1,040)	$ (459)	$ (722)

Amount of net recorded investment.

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- Definition

Represents the number of loan classified as troubled debt restructuring.

+ References

No definition available.

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Represents the number of loan in troubled debt restructuring settled.

+ References

No definition available.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

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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- Definition

Amount of allowance for credit losses related to recorded investment.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5212-111524

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- Definition

Amount of unpaid principal balance of impaired financing receivables with related allowance for credit losses and without related allowance for credit losses.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (a)(4)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5212-111524

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