LOANS, Troubled Debt Restructuring (TDR) (Details) $ in Thousands	3 Months Ended
Mar. 31, 2017 USD ($) Loan	Mar. 31, 2016 USD ($) Loan	Dec. 31, 2016 USD ($) Loan
Financing Receivable, Modifications [Line Items]
TDRs, number \| Loan	210		214
TDRs, amount	$ 5,625		$ 5,530
Loans modified in TDR during the year, number \| Loan	21	17
Loans modified in TDR during the year, amount	$ 721	$ 504
Maximum [Member]
Financing Receivable, Modifications [Line Items]
Threshold balance of TDR loans collectively included in general loan loss allocation and qualitative review	$ 500
Nonaccrual [Member]
Financing Receivable, Modifications [Line Items]
TDRs, number \| Loan	64		56
TDRs, amount	$ 2,425		$ 1,832
Accruing [Member]
Financing Receivable, Modifications [Line Items]
TDRs, number \| Loan	146		158
TDRs, amount	$ 3,200		$ 3,698
Residential Portfolio Segment [Member] \| Consumer Mortgage [Member]
Financing Receivable, Modifications [Line Items]
TDRs, number \| Loan	87		81
TDRs, amount	$ 3,894		$ 3,476
Loans modified in TDR during the year, number \| Loan	7	4
Loans modified in TDR during the year, amount	$ 502	$ 266
Residential Portfolio Segment [Member] \| Consumer Mortgage [Member] \| Nonaccrual [Member]
Financing Receivable, Modifications [Line Items]
TDRs, number \| Loan	44		36
TDRs, amount	$ 2,082		$ 1,520
Residential Portfolio Segment [Member] \| Consumer Mortgage [Member] \| Accruing [Member]
Financing Receivable, Modifications [Line Items]
TDRs, number \| Loan	43		45
TDRs, amount	$ 1,812		$ 1,956
Commercial Portfolio Segment [Member] \| Minimum [Member]
Financing Receivable, Modifications [Line Items]
Threshold balance of loans individually evaluated for impairment	$ 500
Commercial Portfolio Segment [Member] \| Business Lending [Member]
Financing Receivable, Modifications [Line Items]
TDRs, number \| Loan	10		11
TDRs, amount	$ 399		$ 781
Loans modified in TDR during the year, number \| Loan	0	0
Loans modified in TDR during the year, amount	$ 0	$ 0
Commercial Portfolio Segment [Member] \| Business Lending [Member] \| Nonaccrual [Member]
Financing Receivable, Modifications [Line Items]
TDRs, number \| Loan	6		6
TDRs, amount	$ 76		$ 91
Commercial Portfolio Segment [Member] \| Business Lending [Member] \| Accruing [Member]
Financing Receivable, Modifications [Line Items]
TDRs, number \| Loan	4		5
TDRs, amount	$ 323		$ 690
Consumer Portfolio Segment [Member] \| Consumer Indirect [Member]
Financing Receivable, Modifications [Line Items]
TDRs, number \| Loan	79		78
TDRs, amount	$ 776		$ 771
Loans modified in TDR during the year, number \| Loan	8	12
Loans modified in TDR during the year, amount	$ 106	$ 238
Consumer Portfolio Segment [Member] \| Consumer Indirect [Member] \| Nonaccrual [Member]
Financing Receivable, Modifications [Line Items]
TDRs, number \| Loan	0		0
TDRs, amount	$ 0		$ 0
Consumer Portfolio Segment [Member] \| Consumer Indirect [Member] \| Accruing [Member]
Financing Receivable, Modifications [Line Items]
TDRs, number \| Loan	79		78
TDRs, amount	$ 776		$ 771
Consumer Portfolio Segment [Member] \| Consumer Direct [Member]
Financing Receivable, Modifications [Line Items]
TDRs, number \| Loan	13		23
TDRs, amount	$ 76		$ 65
Loans modified in TDR during the year, number \| Loan	4	0
Loans modified in TDR during the year, amount	$ 15	$ 0
Consumer Portfolio Segment [Member] \| Consumer Direct [Member] \| Nonaccrual [Member]
Financing Receivable, Modifications [Line Items]
TDRs, number \| Loan	0		0
TDRs, amount	$ 0		$ 0
Consumer Portfolio Segment [Member] \| Consumer Direct [Member] \| Accruing [Member]
Financing Receivable, Modifications [Line Items]
TDRs, number \| Loan	13		23
TDRs, amount	$ 76		$ 65
Consumer Portfolio Segment [Member] \| Home Equity [Member]
Financing Receivable, Modifications [Line Items]
TDRs, number \| Loan	21		21
TDRs, amount	$ 480		$ 437
Loans modified in TDR during the year, number \| Loan	2	1
Loans modified in TDR during the year, amount	$ 98	$ 0
Consumer Portfolio Segment [Member] \| Home Equity [Member] \| Nonaccrual [Member]
Financing Receivable, Modifications [Line Items]
TDRs, number \| Loan	14		14
TDRs, amount	$ 267		$ 221
Consumer Portfolio Segment [Member] \| Home Equity [Member] \| Accruing [Member]
Financing Receivable, Modifications [Line Items]
TDRs, number \| Loan	7		7
TDRs, amount	$ 213		$ 216

The threshold balance of financing receivable that is individually evaluated for impairment.

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- Definition

Threshold balance of financing receivables classified as a troubled debt restructuring that are collectively evaluated for impairment.

+ References

No definition available.

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- Definition

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

+ 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=66008989&loc=SL6953676-111524

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

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- Definition

The amount of the outstanding recorded investment related to 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 40
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=25495931&loc=d3e18845-111554

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Recorded Investment
-URI http://asc.fasb.org/extlink&oid=65880944

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