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LOANS, Credit Quality By Past Due Status (Details) (USD $) In Thousands, unless otherwise specified | Sep. 30, 2014 | Dec. 31, 2013
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Aged analysis of the company's loans [Abstract] |  |  |  |
Total Loans | $ 4,217,244 |  | $ 4,109,083 |
Legacy Loan [Member] |  |  |  |
Aged analysis of the company's loans [Abstract] |  |  |  |
Past Due 30 - 89 Days | 28,644 |  | 35,689 |
90 + Days Past Due and Still Accruing | 2,544 |  | 2,418 |
Nonaccrual | 17,313 |  | 16,065 |
Total Past Due | 48,501 |  | 54,172 |
Current | 3,882,810 |  | 3,717,703 |
Total Loans | 3,931,311 |  | 3,771,875 |
Acquired Loans [Member] |  |  |  |
Aged analysis of the company's loans [Abstract] |  |  |  |
Past Due 30 - 89 Days | 3,132 |  | 3,522 |
90 + Days Past Due and Still Accruing | 146 |  | 137 |
Nonaccrual | 4,010 |  | 3,408 |
Total Past Due | 7,288 |  | 7,067 |
Acquired Impaired | 5,487 | [1] | 7,090 | [1]
Current | 273,158 |  | 323,051 |
Total Loans | 285,933 |  | 337,208 |
Consumer Mortgage [Member] |  |  |  |
Aged analysis of the company's loans [Abstract] |  |  |  |
Total Loans | 1,598,298 |  | 1,582,058 |
Consumer Mortgage [Member] | Legacy Loan [Member] |  |  |  |
Aged analysis of the company's loans [Abstract] |  |  |  |
Past Due 30 - 89 Days | 12,044 |  | 16,589 |
90 + Days Past Due and Still Accruing | 2,074 |  | 1,253 |
Nonaccrual | 12,228 |  | 11,097 |
Total Past Due | 26,346 |  | 28,939 |
Current | 1,499,800 |  | 1,473,320 |
Total Loans | 1,526,146 |  | 1,502,259 |
Consumer Mortgage [Member] | Acquired Loans [Member] |  |  |  |
Aged analysis of the company's loans [Abstract] |  |  |  |
Past Due 30 - 89 Days | 2,303 |  | 1,857 |
90 + Days Past Due and Still Accruing | 53 |  | 85 |
Nonaccrual | 2,033 |  | 1,463 |
Total Past Due | 4,389 |  | 3,405 |
Acquired Impaired | 0 | [1] | 0 | [1]
Current | 67,763 |  | 76,394 |
Total Loans | 72,152 |  | 79,799 |
Business Lending [Member] |  |  |  |
Aged analysis of the company's loans [Abstract] |  |  |  |
Total Loans | 1,251,178 |  | 1,260,364 |
Business Lending [Member] | Legacy Loan [Member] |  |  |  |
Aged analysis of the company's loans [Abstract] |  |  |  |
Past Due 30 - 89 Days | 3,567 |  | 2,960 |
90 + Days Past Due and Still Accruing | 66 |  | 164 |
Nonaccrual | 3,005 |  | 3,083 |
Total Past Due | 6,638 |  | 6,207 |
Current | 1,101,014 |  | 1,079,818 |
Total Loans | 1,107,652 |  | 1,086,025 |
Business Lending [Member] | Acquired Loans [Member] |  |  |  |
Aged analysis of the company's loans [Abstract] |  |  |  |
Past Due 30 - 89 Days | 134 |  | 531 |
90 + Days Past Due and Still Accruing | 0 |  | 0 |
Nonaccrual | 1,421 |  | 1,472 |
Total Past Due | 1,555 |  | 2,003 |
Acquired Impaired | 5,487 | [1] | 7,090 | [1]
Current | 136,484 |  | 165,246 |
Total Loans | 143,526 |  | 174,339 |
Consumer Indirect [Member] |  |  |  |
Aged analysis of the company's loans [Abstract] |  |  |  |
Total Loans | 841,975 |  | 740,002 |
Consumer Indirect [Member] | Legacy Loan [Member] |  |  |  |
Aged analysis of the company's loans [Abstract] |  |  |  |
Past Due 30 - 89 Days | 9,483 |  | 11,647 |
90 + Days Past Due and Still Accruing | 115 |  | 738 |
Nonaccrual | 11 |  | 14 |
Total Past Due | 9,609 |  | 12,399 |
Current | 830,786 |  | 723,878 |
Total Loans | 840,395 |  | 736,277 |
Consumer Indirect [Member] | Acquired Loans [Member] |  |  |  |
Aged analysis of the company's loans [Abstract] |  |  |  |
Past Due 30 - 89 Days | 64 |  | 157 |
90 + Days Past Due and Still Accruing | 0 |  | 17 |
Nonaccrual | 0 |  | 0 |
Total Past Due | 64 |  | 174 |
Acquired Impaired | 0 | [1] | 0 | [1]
Current | 1,516 |  | 3,551 |
Total Loans | 1,580 |  | 3,725 |
Consumer Direct [Member] |  |  |  |
Aged analysis of the company's loans [Abstract] |  |  |  |
Total Loans | 186,672 |  | 180,139 |
Consumer Direct [Member] | Legacy Loan [Member] |  |  |  |
Aged analysis of the company's loans [Abstract] |  |  |  |
Past Due 30 - 89 Days | 1,201 |  | 1,858 |
90 + Days Past Due and Still Accruing | 20 |  | 90 |
Nonaccrual | 2 |  | 4 |
Total Past Due | 1,223 |  | 1,952 |
Current | 179,165 |  | 169,452 |
Total Loans | 180,388 |  | 171,404 |
Consumer Direct [Member] | Acquired Loans [Member] |  |  |  |
Aged analysis of the company's loans [Abstract] |  |  |  |
Past Due 30 - 89 Days | 148 |  | 385 |
90 + Days Past Due and Still Accruing | 18 |  | 27 |
Nonaccrual | 0 |  | 0 |
Total Past Due | 166 |  | 412 |
Acquired Impaired | 0 | [1] | 0 | [1]
Current | 6,118 |  | 8,323 |
Total Loans | 6,284 |  | 8,735 |
Home Equity [Member] |  |  |  |
Aged analysis of the company's loans [Abstract] |  |  |  |
Total Loans | 339,121 |  | 346,520 |
Home Equity [Member] | Legacy Loan [Member] |  |  |  |
Aged analysis of the company's loans [Abstract] |  |  |  |
Past Due 30 - 89 Days | 2,349 |  | 2,635 |
90 + Days Past Due and Still Accruing | 269 |  | 173 |
Nonaccrual | 2,067 |  | 1,867 |
Total Past Due | 4,685 |  | 4,675 |
Current | 272,045 |  | 271,235 |
Total Loans | 276,730 |  | 275,910 |
Home Equity [Member] | Acquired Loans [Member] |  |  |  |
Aged analysis of the company's loans [Abstract] |  |  |  |
Past Due 30 - 89 Days | 483 |  | 592 |
90 + Days Past Due and Still Accruing | 75 |  | 8 |
Nonaccrual | 556 |  | 473 |
Total Past Due | 1,114 |  | 1,073 |
Acquired Impaired | 0 | [1] | 0 | [1]
Current | 61,277 |  | 69,537 |
Total Loans | $ 62,391 |  | $ 70,610 |
[1] | Acquired impaired loans were not classified as nonperforming assets as the loans are considered to be performing under ASC 310-30. As a result interest income, through the accretion of the difference between the carrying amount of the loans and the expected cash flows, is being recognized on all acquired impaired loans.

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- Definition Financing receivables that are less than 90 days past due but more than 29 days past due. + References No definition available. + Details
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- Definition Loans acquired after January 1, 2009 that have evidence of deterioration in credit quality since origination and for which it is probable, at acquisition, that the company will be unable to collect all contractually required payments. + References No definition available. + Details
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- Definition Recorded investment in financing receivables that are 90 days or more past due and still accruing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5111-111524 + Details
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- Definition Financing receivables that are current. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7A -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953401-111524 + Details
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- Definition Recorded investment in financing receivables that are on nonaccrual status as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5111-111524 + Details
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- Definition Recorded Investment in financing receivables that are past due at the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7A -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953401-111524 + Details
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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=28367877&loc=d3e4428-111522 + Details
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