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GOODWILL AND IDENTIFIABLE INTANGIBLE ASSETS (Tables) | 12 Months Ended
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Dec. 31, 2014
GOODWILL AND IDENTIFIABLE INTANGIBLE ASSETS [Abstract] |
Gross Carrying Amount and Accumulated Amortization for Each Type of Identifiable Intangible Asset | The gross carrying amount and accumulated amortization for each type of identifiable intangible asset are as follows:
|  | December 31, 2014 |  |  | December 31, 2013 |
|  | Gross |  |  |  |  |  | Net |  |  | Gross |  |  |  |  |  | Net |
|  | Carrying |  |  | Accumulated |  |  | Carrying |  |  | Carrying |  |  | Accumulated |  |  | Carrying |
(000's omitted) |  | Amount |  |  | Amortization |  |  | Amount |  |  | Amount |  |  | Amortization |  |  | Amount |
Amortizing intangible assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Core deposit intangibles |  | $ | 40,326 |  |  | $ | (30,303 | ) |  | $ | 10,023 |  |  | $ | 40,326 |  |  | $ | (26,866 | ) |  | $ | 13,460 |
Other intangibles |  |  | 10,019 |  |  |  | (8,243 | ) |  |  | 1,776 |  |  |  | 9,441 |  |  |  | (7,393 | ) |  |  | 2,048 |
Total amortizing intangibles |  | $ | 50,345 |  |  | $ | (38,546 | ) |  | $ | 11,799 |  |  | $ | 49,767 |  |  | $ | (34,259 | ) |  | $ | 15,508 |
Estimated Aggregate Amortization Expense for Each of Five Succeeding Fiscal Years | The estimated aggregate amortization expense for each of the five succeeding fiscal years ended December 31 is as follows:
2015 |  | $ | 3,408 |
2016 |  |  | 2,612 |
2017 |  |  | 1,908 |
2018 |  |  | 1,424 |
2019 |  |  | 1,002 |
Thereafter |  |  | 1,445 |
Total |  | $ | 11,799 |
Components of Goodwill | Shown below are the components of the Company’s goodwill at December 31, 2014 and 2013:
|  | Year Ended |  |  |  |  |  | Year Ended |  |  |  |  |  | Year Ended |
(000’s omitted) |  | December 31, 2012 |  |  | Activity |  |  | December 31, 2013 |  |  | Activity |  |  | December 31, 2014 |
Goodwill |  | $ | 374,527 |  |  | $ | 5,288 |  |  | $ | 379,815 |  |  | $ | 183 |  |  | $ | 379,998 |
Accumulated impairment |  |  | (4,824 | ) |  |  | 0 |  |  |  | (4,824 | ) |  |  | 0 |  |  |  | (4,824 | )
Goodwill, net |  | $ | 369,703 |  |  | $ | 5,288 |  |  | $ | 374,991 |  |  | $ | 183 |  |  | $ | 375,174 |
Changes in Carrying Value of MSRs and Associated Valuation Allowance | The following table summarizes the changes in carrying value of MSRs and the associated valuation allowance:
(000’s omitted) |  | 2014 |  |  | 2013 |
Carrying value before valuation allowance at beginning of period |  | $ | 1,218 |  |  | $ | 1,458 |
Additions |  |  | 315 |  |  |  | 289 |
Amortization |  |  | (444 | ) |  |  | (529 | )
Carrying value before valuation allowance at end of period |  |  | 1,089 |  |  |  | 1,218 |
Valuation allowance balance at beginning of period |  |  | 0 |  |  |  | (430 | )
Impairment charges |  |  | 0 |  |  |  | (111 | )
Impairment recoveries |  |  | 0 |  |  |  | 541 |
Valuation allowance balance at end of period |  |  | 0 |  |  |  | 0 |
Net carrying value at end of period |  | $ | 1,089 |  |  | $ | 1,218 |
Fair value of MSRs at end of period |  | $ | 1,616 |  |  | $ | 1,495 |
Principal balance of loans sold during the year |  | $ | 25,728 |  |  | $ | 25,179 |
Principal balance of loans serviced for others |  | $ | 302,895 |  |  | $ | 322,030 |
Custodial escrow balances maintained in connection with loans serviced for others |  | $ | 4,320 |  |  | $ | 4,519 |
Summary of Key Economic Assumptions Used to Estimate Value of MSRs | The following table summarizes the key economic assumptions used to estimate the value of the MSRs at December 31:
|  | 2014 |  |  | 2013 |
Weighted-average contractual life (in years) |  |  | 19.6 |  |  |  | 19.2 |
Weighted-average constant prepayment rate (CPR) |  |  | 12.8 | % |  |  | 18.0 | %
Weighted-average discount rate |  |  | 3.2 | % |  |  | 4.5 | %

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- Definition Tabular disclosure of all information related to the key inputs and assumptions used in measuring the fair value of assets obtained or liabilities incurred, as the result of a sale of financial assets, relating to the transferor's continuing involvement, if any, at the time of securitization, asset-backed financing arrangement, or similar transfer (including at a minimum, but not limited to, and if applicable, quantitative information about discount rates, expected prepayments including the expected weighted-average life of prepayable financial assets, and anticipated credit losses, including expected static pool losses). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=13989330&loc=d3e107207-111719 + Details
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- Definition Tabular disclosure of the amount of amortization expense expected to be recorded in succeeding fiscal years for finite-lived intangible assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13854-109267 + Details
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- Definition Tabular disclosure of activity in the balance of servicing assets subsequently measured at amortized cost. Includes, but is not limited to, beginning and ending balances, additions, disposals, and amortization. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=7882072&loc=d3e122739-111746 + Details
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