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LOANS, Allowance for Loan Losses (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Allowance for loan losses [Roll Forward] |  |  |
Balance, beginning of period | $ 47,233 | $ 45,401 | $ 45,341
Charge-offs | (16,757) | (12,183) | (12,071)
Recoveries | 6,123 | 5,939 | 5,684
Provision | 10,984 | 8,076 | 6,447
Balance, end of period | 47,583 | 47,233 | 45,401
Acquired Impaired [Member] |  |  |
Allowance for loan losses [Roll Forward] |  |  |
Balance, beginning of period | 108 | 168 | 173
Charge-offs | (270) | (97) | (103)
Recoveries | 0 | 0 | 0
Provision | 309 | 37 | 98
Balance, end of period | 147 | 108 | 168
Residential Portfolio Segment [Member] | Consumer Mortgage [Member] |  |  |
Allowance for loan losses [Roll Forward] |  |  |
Balance, beginning of period | 10,094 | 10,198 | 10,286
Charge-offs | (707) | (647) | (1,374)
Recoveries | 50 | 115 | 80
Provision | 1,028 | 428 | 1,206
Balance, end of period | 10,465 | 10,094 | 10,198
Commercial Portfolio Segment [Member] | Business Lending [Member] |  |  |
Allowance for loan losses [Roll Forward] |  |  |
Balance, beginning of period | 17,220 | 15,749 | 15,787
Charge-offs | (4,959) | (1,872) | (2,146)
Recoveries | 656 | 616 | 877
Provision | 4,340 | 2,727 | 1,231
Balance, end of period | 17,257 | 17,220 | 15,749
Consumer Portfolio Segment [Member] | Consumer Indirect [Member] |  |  |
Allowance for loan losses [Roll Forward] |  |  |
Balance, beginning of period | 13,782 | 12,422 | 11,544
Charge-offs | (8,456) | (7,643) | (6,714)
Recoveries | 4,516 | 4,168 | 3,943
Provision | 3,626 | 4,835 | 3,649
Balance, end of period | 13,468 | 13,782 | 12,422
Consumer Portfolio Segment [Member] | Consumer Direct [Member] |  |  |
Allowance for loan losses [Roll Forward] |  |  |
Balance, beginning of period | 2,979 | 2,997 | 3,083
Charge-offs | (2,081) | (1,706) | (1,490)
Recoveries | 849 | 901 | 722
Provision | 1,292 | 787 | 682
Balance, end of period | 3,039 | 2,979 | 2,997
Consumer Portfolio Segment [Member] | Home Equity [Member] |  |  |
Allowance for loan losses [Roll Forward] |  |  |
Balance, beginning of period | 2,399 | 2,666 | 2,701
Charge-offs | (284) | (218) | (244)
Recoveries | 52 | 139 | 62
Provision | (60) | (188) | 147
Balance, end of period | 2,107 | 2,399 | 2,666
Unallocated Financing Receivables [Member] |  |  |
Allowance for loan losses [Roll Forward] |  |  |
Balance, beginning of period | 651 | 1,201 | 1,767
Charge-offs | 0 | 0 | 0
Recoveries | 0 | 0 | 0
Provision | 449 | (550) | (566)
Balance, end of period | $ 1,100 | $ 651 | $ 1,201

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- Definition Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(4) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- Definition Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7(d)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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- Definition Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7(d)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SAB Topic 6.L.1) -URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74567-122707 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (b)(1)(ii) -URI http://asc.fasb.org/extlink&oid=82894903&loc=d3e15032-111544 + Details
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