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LOANS AND ALLOWANCE FOR LOAN LOSSES - Credit Quality Indicator (Details) - USD ($) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016 | Dec. 31, 2016
Financing Receivable, Recorded Investment [Line Items] |  |  |  |  |
TDR charge-offs | $ 0 | $ 0 | $ 0 | $ 0 |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 1,255,796,000 |  | 1,255,796,000 |  | $ 1,203,482,000
Deteriorated Loans Transferred in [Abstract] |  |  |  |  |
Contractually required principal and interest, opening balance | 1,877,000 | 2,858,000 | 1,940,000 | 2,912,000 |
Contractually required principal and interest, income accretion | 0 | 0 | 0 | 0 |
Contractually required principal and interest, all other adjustments | (710,000) | (366,000) | (773,000) | (420,000) |
Contractually required principal and interest, closing balance | 1,167,000 | 2,492,000 | 1,167,000 | 2,492,000 |
Contractual cash flows not expected to be collected (nonaccretable discount), opening balance | (352,000) | (505,000) | (352,000) | (506,000) |
Contractual cash flows not expected to be collected (nonaccretable discount), income accretion | 0 | 0 | 0 | 0 |
Contractual cash flows not expected to be collected (nonaccretable discount), all other adjustments | 319,000 | 131,000 | 319,000 | 132,000 |
Contractual cash flows not expected to be collected (nonaccretable discount), closing balance | (33,000) | (374,000) | (33,000) | (374,000) |
Cash flows expected to be collected, opening balance | 1,525,000 | 2,353,000 | 1,588,000 | 2,406,000 |
Cash flows expected to be collected, income accretion | 0 | 0 | 0 | 0 |
Cash flows expected to be collected, all other adjustments | (391,000) | (235,000) | (454,000) | (288,000) |
Cash flows expected to be collected, closing balance | 1,134,000 | 2,118,000 | 1,134,000 | 2,118,000 |
Interest component of expected cash flows (accretable yield), opening balance | (155,000) | (275,000) | (170,000) | (311,000) |
Interest component of expected cash flows (accretable yield), income accretion | 25,000 | 33,000 | 40,000 | 70,000 |
Interest component of expected cash flows (accretable yield), all other adjustments | 2,000 | (1,000) | 2,000 | (2,000) |
Interest component of expected cash flows (accretable yield), closing balance | (128,000) | (243,000) | (128,000) | (243,000) |
Fair value of loans acquired with deteriorating credit quality, opening balance | 1,370,000 | 2,078,000 | 1,418,000 | 2,095,000 |
Fair value of loans acquired with deteriorating credit quality, income accretion | 25,000 | 33,000 | 40,000 | 70,000 |
Fair value of loans acquired with deteriorating credit quality, all other adjustments | (389,000) | (236,000) | (452,000) | (290,000) |
Fair value of loans acquired with deteriorating credit quality, closing balance | 1,006,000 | 1,875,000 | 1,006,000 | 1,875,000 |
Allowance for loan and lease losses, period increase (decrease) | 54,000 | 15,000 | 54,000 | (15,000) |
Allowance for loan and lease loss, recovery of bad debts | 29,000 | $ 0 | 29,000 | $ 0 |
Loans acquired with deteriorated credit quality |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 1,006,000 |  | 1,006,000 |  | 1,418,000
Not Rated |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 454,466,000 |  | 454,466,000 |  | 449,634,000
Pass |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 761,871,000 |  | 761,871,000 |  | 715,012,000
Special Mention |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 13,379,000 |  | 13,379,000 |  | 11,110,000
Substandard |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 23,655,000 |  | 23,655,000 |  | 24,848,000
Doubtful |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 1,419,000 |  | 1,419,000 |  | 1,460,000
Commercial and agricultural: |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 189,939,000 |  | 189,939,000 |  | 177,027,000
Commercial and agricultural: | Loans acquired with deteriorated credit quality |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 0 |  | 0 |  | 0
Commercial Mortgages |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 606,242,000 |  | 606,242,000 |  | 570,156,000
Commercial Mortgages | Loans acquired with deteriorated credit quality |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 1,006,000 |  | 1,006,000 |  | 1,323,000
Commercial Mortgages | Construction |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 57,694,000 |  | 57,694,000 |  | 46,510,000
Commercial Mortgages | Construction | Loans acquired with deteriorated credit quality |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 0 |  | 0 |  | 0
Commercial Mortgages | Construction | Not Rated |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 0 |  | 0 |  | 0
Commercial Mortgages | Construction | Pass |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 56,388,000 |  | 56,388,000 |  | 45,055,000
Commercial Mortgages | Construction | Special Mention |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 0 |  | 0 |  | 259,000
Commercial Mortgages | Construction | Substandard |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 1,306,000 |  | 1,306,000 |  | 1,196,000
Commercial Mortgages | Construction | Doubtful |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 0 |  | 0 |  | 0
Commercial Mortgages | Commercial mortgages |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 548,548,000 |  | 548,548,000 |  | 523,646,000
Commercial Mortgages | Commercial mortgages | Loans acquired with deteriorated credit quality |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 1,006,000 |  | 1,006,000 |  | 1,323,000
Commercial Mortgages | Commercial mortgages | Not Rated |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 0 |  | 0 |  | 0
Commercial Mortgages | Commercial mortgages | Pass |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 522,740,000 |  | 522,740,000 |  | 496,723,000
Commercial Mortgages | Commercial mortgages | Special Mention |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 8,058,000 |  | 8,058,000 |  | 8,574,000
Commercial Mortgages | Commercial mortgages | Substandard |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 15,325,000 |  | 15,325,000 |  | 15,566,000
Commercial Mortgages | Commercial mortgages | Doubtful |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 1,419,000 |  | 1,419,000 |  | 1,460,000
Residential mortgages |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 201,117,000 |  | 201,117,000 |  | 198,965,000
Residential and consumer finance receivable [Abstract] |  |  |  |  |
Residential and consumer loans receivable | 201,117,000 |  | 201,117,000 |  | 198,965,000
Residential mortgages | Loans acquired with deteriorated credit quality |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 0 |  | 0 |  | 95,000
Residential mortgages | Performing |  |  |  |  |
Residential and consumer finance receivable [Abstract] |  |  |  |  |
Residential and consumer loans receivable | 197,839,000 |  | 197,839,000 |  | 194,764,000
Residential mortgages | Non-Performing |  |  |  |  |
Residential and consumer finance receivable [Abstract] |  |  |  |  |
Residential and consumer loans receivable | 3,278,000 |  | 3,278,000 |  | 4,201,000
Residential mortgages | Not Rated |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 197,839,000 |  | 197,839,000 |  | 194,669,000
Residential mortgages | Pass |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 0 |  | 0 |  | 0
Residential mortgages | Special Mention |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 0 |  | 0 |  | 0
Residential mortgages | Substandard |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 3,278,000 |  | 3,278,000 |  | 4,201,000
Residential mortgages | Doubtful |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 0 |  | 0 |  | 0
Consumer loans: |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 258,498,000 |  | 258,498,000 |  | 257,334,000
Consumer loans: | Loans acquired with deteriorated credit quality |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 0 |  | 0 |  | 0
Consumer loans: | Credit cards |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 1,403,000 |  | 1,403,000 |  | 1,476,000
Residential and consumer finance receivable [Abstract] |  |  |  |  |
Residential and consumer loans receivable | 1,403,000 |  | 1,403,000 |  | 1,476,000
Consumer loans: | Credit cards | Loans acquired with deteriorated credit quality |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 0 |  | 0 |  | 0
Consumer loans: | Credit cards | Performing |  |  |  |  |
Residential and consumer finance receivable [Abstract] |  |  |  |  |
Residential and consumer loans receivable | 1,403,000 |  | 1,403,000 |  | 1,476,000
Consumer loans: | Credit cards | Non-Performing |  |  |  |  |
Residential and consumer finance receivable [Abstract] |  |  |  |  |
Residential and consumer loans receivable | 0 |  | 0 |  | 0
Consumer loans: | Credit cards | Not Rated |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 1,403,000 |  | 1,403,000 |  | 1,476,000
Consumer loans: | Credit cards | Pass |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 0 |  | 0 |  | 0
Consumer loans: | Credit cards | Special Mention |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 0 |  | 0 |  | 0
Consumer loans: | Credit cards | Substandard |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 0 |  | 0 |  | 0
Consumer loans: | Credit cards | Doubtful |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 0 |  | 0 |  | 0
Consumer loans: | Home equity lines and loans |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 97,524,000 |  | 97,524,000 |  | 98,853,000
Residential and consumer finance receivable [Abstract] |  |  |  |  |
Residential and consumer loans receivable | 97,524,000 |  | 97,524,000 |  | 98,853,000
Consumer loans: | Home equity lines and loans | Loans acquired with deteriorated credit quality |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 0 |  | 0 |  | 0
Consumer loans: | Home equity lines and loans | Performing |  |  |  |  |
Residential and consumer finance receivable [Abstract] |  |  |  |  |
Residential and consumer loans receivable | 96,343,000 |  | 96,343,000 |  | 97,183,000
Consumer loans: | Home equity lines and loans | Non-Performing |  |  |  |  |
Residential and consumer finance receivable [Abstract] |  |  |  |  |
Residential and consumer loans receivable | 1,181,000 |  | 1,181,000 |  | 1,670,000
Consumer loans: | Home equity lines and loans | Not Rated |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 96,343,000 |  | 96,343,000 |  | 97,183,000
Consumer loans: | Home equity lines and loans | Pass |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 0 |  | 0 |  | 0
Consumer loans: | Home equity lines and loans | Special Mention |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 0 |  | 0 |  | 0
Consumer loans: | Home equity lines and loans | Substandard |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 1,181,000 |  | 1,181,000 |  | 1,670,000
Consumer loans: | Home equity lines and loans | Doubtful |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 0 |  | 0 |  | 0
Consumer loans: | Indirect consumer loans |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 143,132,000 |  | 143,132,000 |  | 139,993,000
Residential and consumer finance receivable [Abstract] |  |  |  |  |
Residential and consumer loans receivable | 143,132,000 |  | 143,132,000 |  | 139,993,000
Consumer loans: | Indirect consumer loans | Loans acquired with deteriorated credit quality |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 0 |  | 0 |  | 0
Consumer loans: | Indirect consumer loans | Performing |  |  |  |  |
Residential and consumer finance receivable [Abstract] |  |  |  |  |
Residential and consumer loans receivable | 142,459,000 |  | 142,459,000 |  | 139,339,000
Consumer loans: | Indirect consumer loans | Non-Performing |  |  |  |  |
Residential and consumer finance receivable [Abstract] |  |  |  |  |
Residential and consumer loans receivable | 673,000 |  | 673,000 |  | 654,000
Consumer loans: | Indirect consumer loans | Not Rated |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 142,459,000 |  | 142,459,000 |  | 139,339,000
Consumer loans: | Indirect consumer loans | Pass |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 0 |  | 0 |  | 0
Consumer loans: | Indirect consumer loans | Special Mention |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 0 |  | 0 |  | 0
Consumer loans: | Indirect consumer loans | Substandard |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 673,000 |  | 673,000 |  | 654,000
Consumer loans: | Indirect consumer loans | Doubtful |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 0 |  | 0 |  | 0
Consumer loans: | Direct consumer loans |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 16,439,000 |  | 16,439,000 |  | 17,012,000
Residential and consumer finance receivable [Abstract] |  |  |  |  |
Residential and consumer loans receivable | 16,439,000 |  | 16,439,000 |  | 17,012,000
Consumer loans: | Direct consumer loans | Loans acquired with deteriorated credit quality |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 0 |  | 0 |  | 0
Consumer loans: | Direct consumer loans | Performing |  |  |  |  |
Residential and consumer finance receivable [Abstract] |  |  |  |  |
Residential and consumer loans receivable | 16,422,000 |  | 16,422,000 |  | 16,967,000
Consumer loans: | Direct consumer loans | Non-Performing |  |  |  |  |
Residential and consumer finance receivable [Abstract] |  |  |  |  |
Residential and consumer loans receivable | 17,000 |  | 17,000 |  | 45,000
Consumer loans: | Direct consumer loans | Not Rated |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 16,422,000 |  | 16,422,000 |  | 16,967,000
Consumer loans: | Direct consumer loans | Pass |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 0 |  | 0 |  | 0
Consumer loans: | Direct consumer loans | Special Mention |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 0 |  | 0 |  | 0
Consumer loans: | Direct consumer loans | Substandard |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 17,000 |  | 17,000 |  | 45,000
Consumer loans: | Direct consumer loans | Doubtful |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 0 |  | 0 |  | 0
Commercial and industrial | Commercial and agricultural: |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 189,407,000 |  | 189,407,000 |  | 176,666,000
Commercial and industrial | Commercial and agricultural: | Loans acquired with deteriorated credit quality |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 0 |  | 0 |  | 0
Commercial and industrial | Commercial and agricultural: | Not Rated |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 0 |  | 0 |  | 0
Commercial and industrial | Commercial and agricultural: | Pass |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 182,211,000 |  | 182,211,000 |  | 172,873,000
Commercial and industrial | Commercial and agricultural: | Special Mention |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 5,321,000 |  | 5,321,000 |  | 2,277,000
Commercial and industrial | Commercial and agricultural: | Substandard |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 1,875,000 |  | 1,875,000 |  | 1,516,000
Commercial and industrial | Commercial and agricultural: | Doubtful |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 0 |  | 0 |  | 0
Agricultural | Commercial and agricultural: |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 532,000 |  | 532,000 |  | 361,000
Agricultural | Commercial and agricultural: | Loans acquired with deteriorated credit quality |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 0 |  | 0 |  | 0
Agricultural | Commercial and agricultural: | Not Rated |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 0 |  | 0 |  | 0
Agricultural | Commercial and agricultural: | Pass |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 532,000 |  | 532,000 |  | 361,000
Agricultural | Commercial and agricultural: | Special Mention |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | 0 |  | 0 |  | 0
Agricultural | Commercial and agricultural: | Substandard |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans |  |  |  |  | 0
Agricultural | Commercial and agricultural: | Doubtful |  |  |  |  |
Finance receivable by credit quality indicator [Abstract] |  |  |  |  |
Loans | $ 0 |  | $ 0 |  | $ 0

X
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- Definition The amount of the loan's contractually required payments receivable in excess of the amount of its cash flows expected to be collected. This relates to loans with deteriorating of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable. + References No definition available. + Details
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- Definition Amount of accretion recognized for the excess of a loan's cash flows expected to be collected over the investor's initial investment in acquired loans not accounted for as debt securities, with evidence of deterioration of credit quality. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 15 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=82894507&loc=d3e13503-111538 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=82894903&loc=d3e15032-111544 + Details
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- Definition Fair value at acquisition of acquired loans not accounted for as debt securities with evidence of deterioration of credit quality. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 15 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=82894507&loc=d3e13503-111538 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=82894903&loc=d3e15032-111544 + Details
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- Definition Amount of contractually required payments receivable at acquisition of acquired loans not accounted for as debt securities with evidence of deterioration of credit quality. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=82894903&loc=d3e15032-111544 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 15 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=82894507&loc=d3e13503-111538 + Details
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