LOANS, Troubled Debt Restructuring (TDR) (Details) $ in Thousands	12 Months Ended
Dec. 31, 2016 USD ($) Loan	Dec. 31, 2015 USD ($) Loan
Financing Receivable, Modifications [Line Items]
TDRs, number \| Loan	214	238
TDRs, amount	$ 5,530	$ 6,144
Loans modified in TDR during the year, number \| Loan	48	71
Loans modified in TDR during the year, amount	$ 1,157	$ 1,864
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	56	55
TDRs, amount	$ 1,832	$ 1,892
Accruing [Member]
Financing Receivable, Modifications [Line Items]
TDRs, number \| Loan	158	183
TDRs, amount	$ 3,698	$ 4,252
Residential Portfolio Segment [Member] \| Consumer Mortgage [Member]
Financing Receivable, Modifications [Line Items]
TDRs, number \| Loan	81	91
TDRs, amount	$ 3,476	$ 3,958
Loans modified in TDR during the year, number \| Loan	9	21
Loans modified in TDR during the year, amount	$ 597	$ 1,374
Residential Portfolio Segment [Member] \| Consumer Mortgage [Member] \| Nonaccrual [Member]
Financing Receivable, Modifications [Line Items]
TDRs, number \| Loan	36	37
TDRs, amount	$ 1,520	$ 1,472
Residential Portfolio Segment [Member] \| Consumer Mortgage [Member] \| Accruing [Member]
Financing Receivable, Modifications [Line Items]
TDRs, number \| Loan	45	54
TDRs, amount	$ 1,956	$ 2,486
Commercial Portfolio Segment [Member] \| Minimum [Member]
Financing Receivable, Modifications [Line Items]
Threshold balance of loan individually evaluated for impairment	$ 500
Commercial Portfolio Segment [Member] \| Business Lending [Member]
Financing Receivable, Modifications [Line Items]
TDRs, number \| Loan	11	14
TDRs, amount	$ 781	$ 954
Loans modified in TDR during the year, number \| Loan	0	3
Loans modified in TDR during the year, amount	$ 0	$ 67
Commercial Portfolio Segment [Member] \| Business Lending [Member] \| Nonaccrual [Member]
Financing Receivable, Modifications [Line Items]
TDRs, number \| Loan	6	8
TDRs, amount	$ 91	$ 217
Commercial Portfolio Segment [Member] \| Business Lending [Member] \| Accruing [Member]
Financing Receivable, Modifications [Line Items]
TDRs, number \| Loan	5	6
TDRs, amount	$ 690	$ 737
Consumer Portfolio Segment [Member] \| Consumer Indirect [Member]
Financing Receivable, Modifications [Line Items]
TDRs, number \| Loan	78	77
TDRs, amount	$ 771	$ 691
Loans modified in TDR during the year, number \| Loan	33	35
Loans modified in TDR during the year, amount	$ 459	$ 349
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	78	77
TDRs, amount	$ 771	$ 691
Consumer Portfolio Segment [Member] \| Consumer Direct [Member]
Financing Receivable, Modifications [Line Items]
TDRs, number \| Loan	23	32
TDRs, amount	$ 65	$ 37
Loans modified in TDR during the year, number \| Loan	3	6
Loans modified in TDR during the year, amount	$ 51	$ 11
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	23	32
TDRs, amount	$ 65	$ 37
Consumer Portfolio Segment [Member] \| Home Equity [Member]
Financing Receivable, Modifications [Line Items]
TDRs, number \| Loan	21	24
TDRs, amount	$ 437	$ 504
Loans modified in TDR during the year, number \| Loan	3	6
Loans modified in TDR during the year, amount	$ 50	$ 63
Consumer Portfolio Segment [Member] \| Home Equity [Member] \| Nonaccrual [Member]
Financing Receivable, Modifications [Line Items]
TDRs, number \| Loan	14	10
TDRs, amount	$ 221	$ 203
Consumer Portfolio Segment [Member] \| Home Equity [Member] \| Accruing [Member]
Financing Receivable, Modifications [Line Items]
TDRs, number \| Loan	7	14
TDRs, amount	$ 216	$ 301

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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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

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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.

+ References

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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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