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ACQUISITIONS (Tables) | 12 Months Ended
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Dec. 31, 2015
ACQUISITIONS [Abstract] |
Estimated Fair Value of Assets Acquired and Liabilities Assumed | The following table summarizes the estimated fair value of the assets acquired and liabilities assumed.
(000s omitted) |  | 2015 |  |  | 2014 |  |  | 2013 |
Consideration paid (received): |  |  |  |  |  |  |  |  |
Cash |  | $ | 56,266 |  |  | $ | 924 |  |  | $ | (291,980 | )
Community Bank System, Inc. common stock |  |  | 102,202 |  |  |  | 0 |  |  |  | 0 |
Total net consideration paid (received) |  |  | 158,468 |  |  |  | 924 |  |  |  | (291,980 | )
Recognized amounts of identifiable assets acquired and liabilities assumed: |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents |  |  | 81,772 |  |  |  | 0 |  |  |  | 0 |
Investment securities |  |  | 225,729 |  |  |  | 0 |  |  |  | 0 |
Loans |  |  | 399,422 |  |  |  | 0 |  |  |  | 1,106 |
Premises and equipment |  |  | 22,212 |  |  |  | 0 |  |  |  | 2,549 |
Accrued interest receivable |  |  | 1,133 |  |  |  | 0 |  |  |  | 5 |
Other assets |  |  | 27,452 |  |  |  | 163 |  |  |  | (18 | )
Core deposit intangibles |  |  | 2,570 |  |  |  | 0 |  |  |  | 2,537 |
Other intangibles |  |  | 9,994 |  |  |  | 578 |  |  |  | 9 |
Deposits |  |  | (699,241 | ) |  |  | 0 |  |  |  | (303,456 | )
Other liabilities |  |  | (653 | ) |  |  | 0 |  |  |  | 0 |
Total identifiable assets (liabilities), net |  |  | 70,390 |  |  |  | 741 |  |  |  | (297,268 | )
Goodwill |  | $ | 88,078 |  |  | $ | 183 |  |  | $ | 5,288 |
Summary of Loans Acquired | The following is a summary of the loans acquired from Oneida at the date of acquisition:
(000’s omitted) |  | Acquired Impaired Loans |  |  | Acquired Non-Impaired Loans |  |  | Total Acquired Loans |
Contractually required principal and interest at acquisition |  | $ | 5,138 |  |  | $ | 484,937 |  |  | $ | 490,075 |
Contractual cash flows not expected to be collected |  |  | (1,977 | ) |  |  | (4,833 | ) |  |  | (6,810 | )
Expected cash flows at acquisition |  |  | 3,161 |  |  |  | 480,104 |  |  |  | 483,265 |
Interest component of expected cash flows |  |  | (341 | ) |  |  | (83,502 | ) |  |  | (83,843 | )
Fair value of acquired loans |  | $ | 2,820 |  |  | $ | 396,602 |  |  | $ | 399,422 |
Pro Forma Financial Information | The pro forma information set forth below reflects adjustments related to (a) certain purchase accounting fair value adjustments; and (b) amortization of customer lists and core deposit intangibles. Expenses totaling $14.0 million related to conversion of systems and other costs of integration, as well as certain one-time costs, are excluded from the pro forma year ended December 31, 2015 and were included in the pro forma year ended December 31, 2014.
|  | Actual since Acquisition Through |  |  | Pro Forma (Unaudited) Year Ended December 31, |
(000’s omitted) |  | December 31, 2015 |  |  | 2015 |  |  | 2014 |
Total revenue, net of interest expense |  | $ | 3,667 |  |  | $ | 426,541 |  |  | $ | 416,713 |
Net income (loss) |  |  | (3,905 | ) |  |  | 96,894 |  |  |  | 85,665 |

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- Definition Tabular disclosure of pro forma results of operations for a material business acquisition or series of individually immaterial business acquisitions that are material in the aggregate. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(2)-(3) -URI http://asc.fasb.org/extlink&oid=56956515&loc=d3e1392-128463 + Details
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- Definition Tabular disclosure of the amounts recognized as of the acquisition date for each major class of assets acquired and liabilities assumed. May include but not limited to the following: (a) acquired receivables; (b) contingencies recognized at the acquisition date; and (c) the fair value of noncontrolling interests in the acquiree. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=56956791&loc=d3e4845-128472 + Details
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