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LOANS, Amount of Business Lending Loans by Credit Quality Category (Details) - USD ($) $ in Thousands | Mar. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Financing Receivable, Recorded Investment [Line Items] |  |
Loans | $ 6,227,030 | $ 6,256,757
Legacy Loans [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans | 4,691,880 | 4,619,663
Acquired Loans [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans | 1,535,150 | 1,637,094
Business Lending [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans | 2,426,086 | 2,424,223
Business Lending [Member] | Legacy Loans [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans | 1,450,006 | 1,376,599
Business Lending [Member] | Acquired Loans [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans | 976,080 | 1,047,624
Business Lending [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans | 2,145,327 | 2,134,137
Business Lending [Member] | Pass [Member] | Legacy Loans [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans | 1,253,688 | 1,170,156
Business Lending [Member] | Pass [Member] | Acquired Loans [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans | 891,639 | 963,981
Business Lending [Member] | Special Mention [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans | 163,915 | 166,397
Business Lending [Member] | Special Mention [Member] | Legacy Loans [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans | 120,881 | 129,076
Business Lending [Member] | Special Mention [Member] | Acquired Loans [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans | 43,034 | 37,321
Business Lending [Member] | Classified [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans | 106,596 | 111,995
Business Lending [Member] | Classified [Member] | Legacy Loans [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans | 75,283 | 77,367
Business Lending [Member] | Classified [Member] | Acquired Loans [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans | 31,313 | 34,628
Business Lending [Member] | Doubtful [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans | 1,752 | 1,579
Business Lending [Member] | Doubtful [Member] | Legacy Loans [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans | 154 | 0
Business Lending [Member] | Doubtful [Member] | Acquired Loans [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans | 1,598 | 1,579
Business Lending [Member] | Acquired Impaired [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans | 8,496 | 10,115
Business Lending [Member] | Acquired Impaired [Member] | Legacy Loans [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans | 0 | 0
Business Lending [Member] | Acquired Impaired [Member] | Acquired Loans [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans | 8,496 | 10,115
All Other Loans [Member] | Legacy Loans [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans | 3,241,874 | 3,243,064
All Other Loans [Member] | Acquired Loans [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans | 559,070 | 589,470
All Other Loans [Member] | Performing [Member] | Legacy Loans [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans | 3,228,719 | 3,229,051
All Other Loans [Member] | Performing [Member] | Acquired Loans [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans | 554,428 | 584,874
All Other Loans [Member] | Nonperforming [Member] | Legacy Loans [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans | 13,155 | 14,013
All Other Loans [Member] | Nonperforming [Member] | Acquired Loans [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans | 4,642 | 4,596
Consumer Mortgage [Member] | Legacy Loans [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans | 1,765,864 | 1,754,609
Consumer Mortgage [Member] | Acquired Loans [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans | 446,018 | 465,689
Consumer Mortgage [Member] | Performing [Member] | Legacy Loans [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans | 1,754,341 | 1,742,387
Consumer Mortgage [Member] | Performing [Member] | Acquired Loans [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans | 442,881 | 462,597
Consumer Mortgage [Member] | Nonperforming [Member] | Legacy Loans [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans | 11,523 | 12,222
Consumer Mortgage [Member] | Nonperforming [Member] | Acquired Loans [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans | 3,137 | 3,092
Consumer Indirect [Member] | Legacy Loans [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans | 990,766 | 991,836
Consumer Indirect [Member] | Acquired Loans [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans | 17,432 | 20,142
Consumer Indirect [Member] | Performing [Member] | Legacy Loans [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans | 990,579 | 991,541
Consumer Indirect [Member] | Performing [Member] | Acquired Loans [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans | 17,397 | 20,134
Consumer Indirect [Member] | Nonperforming [Member] | Legacy Loans [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans | 187 | 295
Consumer Indirect [Member] | Nonperforming [Member] | Acquired Loans [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans | 35 | 8
Consumer Direct [Member] | Legacy Loans [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans | 168,517 | 174,479
Consumer Direct [Member] | Acquired Loans [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans | 4,515 | 5,450
Consumer Direct [Member] | Performing [Member] | Legacy Loans [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans | 168,487 | 174,431
Consumer Direct [Member] | Performing [Member] | Acquired Loans [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans | 4,515 | 5,450
Consumer Direct [Member] | Nonperforming [Member] | Legacy Loans [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans | 30 | 48
Consumer Direct [Member] | Nonperforming [Member] | Acquired Loans [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans | 0 | 0
Home Equity [Member] | Legacy Loans [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans | 316,727 | 322,140
Home Equity [Member] | Acquired Loans [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans | 91,105 | 98,189
Home Equity [Member] | Performing [Member] | Legacy Loans [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans | 315,312 | 320,692
Home Equity [Member] | Performing [Member] | Acquired Loans [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans | 89,635 | 96,693
Home Equity [Member] | Nonperforming [Member] | Legacy Loans [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans | 1,415 | 1,448
Home Equity [Member] | Nonperforming [Member] | Acquired Loans [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans | $ 1,470 | $ 1,496

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- Definition Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes 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 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=82891408&loc=d3e4428-111522 + Details
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