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LOANS AND ALLOWANCE FOR LOAN LOSSES - Number of Loans Modified and Their Pre-Modification and Post-Modification Investment Balances (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017 USD ($) contract	Sep. 30, 2016 USD ($) contract	Sep. 30, 2017 USD ($) contract	Sep. 30, 2016 USD ($) contract
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract			2	2
Pre- Modification Recorded Investment			$ 119	$ 6,352
Post Modification Recorded Investment			$ 119	$ 6,352
Commercial real estate | Owner-occupied
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract			2	0
Pre- Modification Recorded Investment			$ 119	$ 0
Post Modification Recorded Investment			$ 119	$ 0
Commercial real estate | Non-owner occupied
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	0	1	0	1
Pre- Modification Recorded Investment	$ 0	$ 6,095	$ 0	$ 6,095
Post Modification Recorded Investment	$ 0	$ 6,095	$ 0	$ 6,095
Residential mortgage | First lien
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract			0	1
Pre- Modification Recorded Investment			$ 0	$ 257
Post Modification Recorded Investment			$ 0	$ 257

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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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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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Pre-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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