Community Bank System (CBU) 10-Q 6 Nov 15 2015 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2015	Oct. 31, 2015
Document and Entity Information [Abstract]
Entity Registrant Name	COMMUNITY BANK SYSTEM, INC.
Entity Central Index Key	723,188
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		41,099,876
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	Q3
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2015

CONSOLIDATED STATEMENTS OF COND

CONSOLIDATED STATEMENTS OF CONDITION (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Assets:
Cash and cash equivalents	$ 156,836	$ 138,396
Available-for-sale investment securities (cost of $2,766,581 and $2,397,886, respectively)	2,867,439	2,472,925
Other securities, at cost	49,824	40,049
Loans held for sale, at fair value	1,014	1,042
Loans	4,313,547	4,236,206
Allowance for loan losses	(45,588)	(45,341)
Net loans	4,267,959	4,190,865
Goodwill, net	375,174	375,174
Core deposit intangibles, net	7,894	10,023
Other intangibles, net	1,457	1,776
Intangible assets, net	384,525	386,973
Premises and equipment, net	92,491	93,633
Accrued interest and fees receivable	28,873	24,645
Other assets	148,205	140,912
Total assets	7,997,166	7,489,440
Liabilities:
Noninterest-bearing deposits	1,357,554	1,324,661
Interest-bearing deposits	4,790,556	4,610,603
Total deposits	6,148,110	5,935,264
Borrowings	558,100	338,000
Subordinated debt held by unconsolidated subsidiary trusts	102,140	102,122
Accrued interest and other liabilities	143,790	126,150
Total liabilities	$ 6,952,140	$ 6,501,536
Commitments and contingencies (See Note J)
Shareholders' equity:
Preferred stock, $1.00 par value, 500,000 shares authorized, 0 shares issued	$ 0	$ 0
Common stock, $1.00 par value, 75,000,000 shares authorized; 41,929,301 and 41,606,422 shares issued, respectively	41,929	41,606
Additional paid-in capital	421,213	409,984
Retained earnings	560,021	525,985
Accumulated other comprehensive income	45,907	30,720
Treasury stock, at cost (910,278 and 858,701 shares, respectively)	(24,044)	(20,391)
Total shareholders' equity	1,045,026	987,904
Total liabilities and shareholders' equity	$ 7,997,166	$ 7,489,440

CONSOLIDATED STATEMENTS OF CON3

CONSOLIDATED STATEMENTS OF CONDITION (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Assets:
Available-for-sale investment securities, cost	$ 2,766,581	$ 2,397,886
Shareholders' equity:
Preferred stock, par value (in dollars per share)	$ 1	$ 1
Preferred stock, authorized (in shares)	500,000	500,000
Preferred stock, issued (in shares)	0	0
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, authorized (in shares)	75,000,000	75,000,000
Common stock, issued (in shares)	41,929,301	41,606,422
Treasury stock, shares at cost (in shares)	910,278	858,701

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Interest income:
Interest and fees on loans	$ 47,040	$ 46,883	$ 138,422	$ 138,649
Interest and dividends on taxable investments	13,454	12,239	38,802	37,481
Interest and dividends on nontaxable investments	4,790	5,165	14,394	15,505
Total interest income	65,284	64,287	191,618	191,635
Interest expense:
Interest on deposits	1,694	1,962	5,225	6,265
Interest on borrowings	587	308	1,081	846
Interest on subordinated debt held by unconsolidated subsidiary trusts	640	623	1,881	1,852
Total interest expense	2,921	2,893	8,187	8,963
Net interest income	62,363	61,394	183,431	182,672
Provision for loan losses	1,906	1,747	3,120	4,647
Net interest income after provision for loan losses	60,457	59,647	180,311	178,025
Noninterest revenues:
Deposit service fees	13,459	13,833	39,142	39,260
Other banking services	2,045	1,867	3,899	4,665
Employee benefit services	11,330	10,755	33,727	31,638
Wealth management services	4,552	4,617	13,383	13,529
Total noninterest revenues	31,386	31,072	90,151	89,092
Noninterest expenses:
Salaries and employee benefits	31,179	30,941	93,218	92,090
Occupancy and equipment	6,652	6,617	20,891	21,224
Data processing and communications	7,643	7,475	22,106	21,529
Amortization of intangible assets	843	1,051	2,642	3,293
Legal and professional fees	1,564	1,973	4,952	5,427
Office supplies and postage	1,636	1,466	4,733	4,664
Business development and marketing	1,889	1,764	5,711	5,424
FDIC insurance premiums	968	952	2,920	2,918
Acquisition expenses and litigation settlement	562	2,800	1,318	2,923
Other	3,143	3,772	9,584	10,404
Total noninterest expenses	56,079	58,811	168,075	169,896
Income before income taxes	35,764	31,908	102,387	97,221
Income taxes	10,742	9,537	31,228	29,001
Net income	$ 25,022	$ 22,371	$ 71,159	$ 68,220
Basic earnings per share (in dollars per share)	$ 0.61	$ 0.55	$ 1.74	$ 1.67
Diluted earnings per share (in dollars per share)	0.60	0.54	1.72	1.65
Cash dividends declared per share (in dollars per share)	$ 0.31	$ 0.30	$ 0.91	$ 0.86

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME/(LOSS) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Pension and other post retirement obligations:
Amortization of actuarial (gains)/losses included in net periodic pension cost, gross	$ 363	$ (79)	$ 1,090	$ (235)
Tax effect	(140)	31	(421)	92
Amortization of actuarial (gains)/losses included in net periodic pension cost, net	223	(48)	669	(143)
Amortization of prior service cost included in net periodic pension cost, gross	(43)	(43)	(127)	(130)
Tax effect	16	17	49	51
Amortization of prior service cost included in net periodic pension cost, net	(27)	(26)	(78)	(79)
Other comprehensive income/(loss) related to pension and other post retirement obligations, net of taxes	196	(74)	591	(222)
Unrealized gains/(losses) on available-for-sale securities:
Net unrealized holding gains/(losses) arising during period, gross	44,019	(1,808)	25,819	75,214
Tax effect	(16,979)	710	(11,223)	(27,776)
Net unrealized holding gains/(losses) arising during period, net	27,040	(1,098)	14,596	47,438
Other comprehensive income/(loss) related to unrealized gains/(losses) on available-for-sale securities, net of taxes	27,040	(1,098)	14,596	47,438
Other comprehensive income/(loss), net of tax	27,236	(1,172)	15,187	47,216
Net income	25,022	22,371	71,159	68,220
Comprehensive income	52,258	$ 21,199	86,346	$ 115,436
Accumulated Other Comprehensive Income By Component:
Unrealized loss for pension and other postretirement obligations	(25,979)		(25,979)		$ (26,941)
Tax effect	9,854		9,854		10,225
Net unrealized loss for pension and other postretirement obligations	(16,125)		(16,125)		(16,716)
Unrealized gain on available-for-sale securities	100,858		100,858		75,039
Tax effect	(38,826)		(38,826)		(27,603)
Net unrealized gain on available-for-sale securities	62,032		62,032		47,436
Accumulated other comprehensive income	$ 45,907		$ 45,907		$ 30,720

CONSOLIDATED STATEMENT OF CHANG

CONSOLIDATED STATEMENT OF CHANGES IN SHAREHOLDERS' EQUITY (Unaudited) - 9 months ended Sep. 30, 2015 - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income [Member]	Treasury Stock [Member]	Total
Balance at Dec. 31, 2014	$ 41,606	$ 409,984	$ 525,985	$ 30,720	$ (20,391)	$ 987,904
Balance (in shares) at Dec. 31, 2014	40,747,721
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income			71,159			71,159
Other comprehensive income, net of tax				15,187		15,187
Cash dividends declared:
Common, $0.91 per share			(37,123)			(37,123)
Common stock issued under employee stock plan, including tax benefits of $1,541	$ 323	8,065				8,388
Common stock issued under employee stock plan, including tax benefits of $1,541 (in shares)	322,879
Stock-based compensation		3,164				3,164
Treasury stock purchased					(9,125)	$ (9,125)
Treasury stock purchased (in shares)	(265,230)					(265,230)
Treasury stock issued to benefit plan					5,472	$ 5,472
Treasury stock issued to benefit plan (in shares)	213,653
Balance at Sep. 30, 2015	$ 41,929	$ 421,213	$ 560,021	$ 45,907	$ (24,044)	$ 1,045,026
Balance (in shares) at Sep. 30, 2015	41,019,023

CONSOLIDATED STATEMENT OF CHAN7

CONSOLIDATED STATEMENT OF CHANGES IN SHAREHOLDERS' EQUITY (Unaudited) (Parenthetical) $ in Thousands	9 Months Ended
	Sep. 30, 2015USD ($)$ / shares
Cash dividends declared:
Dividends declared per common share (in dollars per share)	$ 0.91
Common stock issued under employee stock plan, tax benefits | $	$ 1,541

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Operating activities:
Net income	$ 71,159	$ 68,220
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	9,820	9,801
Amortization of intangible assets	2,642	3,293
Net accretion of premiums and discounts on securities, loans, and borrowings	(2,100)	(2,894)
Stock-based compensation	3,164	3,073
Provision for loan losses	3,120	4,647
Amortization of mortgage servicing rights	307	337
Income from bank-owned life insurance policies	(775)	(760)
Net gain from sale of loans and other assets	(48)	(344)
Net change in loans originated for sale	582	258
Change in other assets and liabilities	(6,219)	5,448
Net cash provided by operating activities	81,652	91,079
Investing activities:
Proceeds from maturities of available-for-sale investment securities	131,709	101,228
Proceeds from maturities of other investment securities	172	12
Purchases of available-for-sale investment securities	(494,436)	(300,120)
Purchases of other securities	(9,947)	(7,761)
Net increase in loans	(84,064)	(114,603)
Cash paid for acquisition, net of cash acquired of $0	0	(924)
Expenditure for intangible asset	(100)	0
Purchases of premises and equipment, net	(9,184)	(7,839)
Net cash used in investing activities	(465,850)	(330,007)
Financing activities:
Net increase in deposits	212,846	71,287
Net change in borrowings, net of payments of $0 and $8	220,100	201,892
Issuance of common stock	8,388	6,115
Purchases of treasury stock	(9,125)	0
Issuances of treasury stock	5,472	0
Cash dividends paid	(36,584)	(33,989)
Tax benefits from share-based payment arrangements	1,541	1,476
Net cash provided by financing activities	402,638	246,781
Change in cash and cash equivalents	18,440	7,853
Cash and cash equivalents at beginning of period	138,396	149,647
Cash and cash equivalents at end of period	156,836	157,500
Supplemental disclosures of cash flow information:
Cash paid for interest	8,249	9,079
Cash paid for income taxes	21,334	19,527
Supplemental disclosures of noncash financing and investing activities:
Dividends declared and unpaid	12,793	12,255
Transfers from loans to other real estate	2,934	2,111
Purchase of intangible asset	$ 93	$ 0

CONSOLIDATED STATEMENTS OF CAS9

CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (Parenthetical) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Investing activities:
Cash acquired from acquisition	$ 0	$ 0
Financing activities:
Payment made on borrowings	$ 0	$ 8

BASIS OF PRESENTATION

BASIS OF PRESENTATION	9 Months Ended
	Sep. 30, 2015
BASIS OF PRESENTATION [Abstract]
BASIS OF PRESENTATION	NOTE A: BASIS OF PRESENTATION The interim financial data as of and for the three and nine months ended September 30, 2015 is unaudited; however, in the opinion of Community Bank System, Inc. (the “Company”), the interim data includes all adjustments, consisting only of normal recurring adjustments, necessary for a fair statement of the results for the interim periods in conformity with generally accepted accounting principles (“GAAP”). The results of operations for the interim periods are not necessarily indicative of the results that may be expected for the full year or any other interim period.

ACQUISITIONS

ACQUISITIONS	9 Months Ended
	Sep. 30, 2015
ACQUISITIONS [Abstract]
ACQUISITIONS	NOTE B: ACQUISITIONS On January 1, 2014, the Company, through its subsidiary, Harbridge Consulting Group, LLC (“Harbridge”), completed its acquisition of a professional services practice from EBS-RMSCO, Inc., a subsidiary of The Lifetime Healthcare Companies (“EBS-RMSCO”). This professional services practice, which provides actuarial valuation and consulting services to clients who sponsor pension and post-retirement medical and welfare plans, enhances the Company’s participation in the Western New York market. The effects of the acquired assets and liabilities have been included in the consolidated financial statements since that date. The assets and liabilities assumed in the acquisitions were recorded at their estimated fair values based on management's best estimates using information available at the dates of the acquisition, and are subject to adjustment based on updated information not available at the time of acquisition. The following table summarizes the estimated fair value of the assets acquired and liabilities assumed during 2014: (000’s omitted) Consideration paid: Cash/Total net consideration paid $ 924 Recognized amounts of identifiable assets acquired and liabilities assumed: Other assets 163 Other intangibles 578 Total identifiable assets 741 Goodwill $ 183 The other intangibles related to the EBS-RMSCO acquisition is being amortized using an accelerated method over their estimated useful life of eight years. The goodwill, which is not amortized for book purposes, was assigned to the Employee Benefit Services segment for the EBS-RMSCO acquisition and is deductible for tax purposes. Supplemental pro forma financial information related to the EBS-RMSCO acquisition has not been provided as it would be impracticable to do so. Historical financial information regarding EBS-RMSCO is not accessible and, thus, the amounts would require estimates so significant as to render the disclosure irrelevant. On February 24, 2015, the Company announced that it had entered into a definitive agreement to acquire Oneida Financial Corp. (“Oneida”), parent company of Oneida Savings Bank, headquartered in Oneida, NY, for approximately $142 million in Company stock and cash. The acquisition will extend the Company’s Central New York banking service area and complement and expand the Company’s existing service capacity in insurance, benefits administration and wealth management. Upon the completion of the merger, Community Bank N.A. (“the Bank”) will add 12 branch locations and approximately $813 million of assets, including approximately $397 million of loans and $708 million of deposits. The Oneida shareholders have approved the acquisition and the various required regulatory approvals for the transaction are expected in the fourth quarter. The Company expects to incur additional one-time, transaction-related costs during the remainder of 2015. Direct costs related to acquisitions were expensed as incurred. Merger and acquisition integration-related expenses amount to $0.6 million and $1.3 million, respectively, in the three and nine months ended September 30, 2015 and $0.1 million in the nine months ended September 30, 2014.

ACCOUNTING POLICIES

ACCOUNTING POLICIES	9 Months Ended
	Sep. 30, 2015
ACCOUNTING POLICIES [Abstract]
ACCOUNTING POLICIES	NOTE C: ACCOUNTING POLICIES The accounting policies of the Company, as applied in the consolidated interim financial statements presented herein, are substantially the same as those followed on an annual basis as presented on pages 55 through 60 of the Annual Report on Form 10-K for the year ended December 31, 2014 filed with the Securities and Exchange Commission (“SEC”) on March 2, 2015. Critical Accounting Policies Acquired Loans Acquired loans are initially recorded at their acquisition date fair values. The carryover of allowance for loan losses is prohibited as any credit losses in the loans are included in the determination of the fair value of the loans at the acquisition date. Fair values for acquired loans are based on a discounted cash flow methodology that involves assumptions and judgments as to credit risk, prepayment risk, liquidity risk, default rates, loss severity, payment speeds, collateral values and discount rate. Acquired Impaired Loans Acquired loans 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 are accounted for as impaired loans under Accounting Standards Codification (“ASC”) 310-30. The excess of undiscounted cash flows expected at acquisition over the estimated fair value is referred to as the accretable discount and is recognized into interest income over the remaining life of the loans using the interest method. The difference between contractually required payments at acquisition and the undiscounted cash flows expected to be collected at acquisition is referred to as the non-accretable discount. The non-accretable discount represents estimated future credit losses and other contractually required payments that the Company does not expect to collect. Subsequent decreases in expected cash flows are recognized as impairments through a charge to the provision for credit losses resulting in an increase in the allowance for loan losses. Subsequent improvements in expected cash flows result in a recovery of previously recorded allowance for loan losses or a reversal of a corresponding amount of the non-accretable discount, which the Company then reclassifies as an accretable discount that is recognized into interest income over the remaining life of the loans using the interest method. Acquired loans that met the criteria for non-accrual of interest prior to acquisition may be considered performing upon acquisition, regardless of whether the customer is contractually delinquent, if the Company can reasonably estimate the timing and amount of the expected cash flows on such loans and if the Company expects to fully collect the new carrying value of the loans. As such, the Company may no longer consider the loan to be non-accrual or non-performing and may accrue interest on these loans, including the impact of any accretable discount. Acquired Non-impaired Loans Acquired loans that do not meet the requirements under ASC 310-30 are considered acquired non-impaired loans. The difference between the acquisition date fair value and the outstanding balance represents the fair value adjustment for a loan and includes both credit and interest rate considerations. Fair value adjustments may be discounts (or premiums) to a loan’s cost basis and are accreted (or amortized) to net interest income (or expense) over the loan’s remaining life in accordance with ASC 310-20. Fair value adjustments for revolving loans are accreted (or amortized) using a straight line method. Term loans are accreted (or amortized) using the constant effective yield method. Subsequent to the purchase date, the methods used to estimate the allowance for loan losses for the acquired non-impaired loans are consistent with the policy described below. However, the Company compares the net realizable value of the loans to the carrying value, for loans collectively evaluated for impairment. The carrying value represents the net of the loan’s unpaid principal balance and the remaining purchase discount (or premium) that has yet to be accreted into interest income. When the carrying value exceeds the net realizable value, an allowance for loan losses is recognized. Allowance for Loan Losses Management continually evaluates the credit quality of the Company’s loan portfolio, and performs a formal review of the adequacy of the allowance for loan losses on a quarterly basis. The allowance reflects management’s best estimate of probable losses inherent in the loan portfolio. Determination of the allowance is subjective in nature and requires significant estimates. The Company’s allowance methodology consists of two broad components - general and specific loan loss allocations. The general loan loss allocation is composed of two calculations that are computed on five main loan segments: business lending; consumer direct; consumer indirect; home equity; and consumer mortgage. The first calculation is quantitative and determines an allowance level based on the latest 36 months of historical net charge-off data for each loan class (commercial loans exclude balances with specific loan loss allocations). The second calculation is qualitative and takes into consideration eight qualitative environmental factors: levels and trends in delinquencies and impaired loans; levels of and trends in charge-offs and recoveries; trends in volume and terms of loans; effects of any changes in risk selection and underwriting standards, and other changes in lending policies, procedures, and practices; experience, ability, and depth of lending management and other relevant staff; national and local economic trends and conditions; industry conditions; and effects of changes in credit concentrations. A component of the qualitative calculation is the unallocated allowance for loan loss. The qualitative and quantitative calculations are added together to determine the general loan loss allocation. The specific loan loss allocation relates to individual commercial loans that are both greater than $0.5 million and in a nonaccruing status with respect to interest. Specific loan losses are based on discounted estimated cash flows, including any cash flows resulting from the conversion of collateral or collateral shortfalls. The allowance levels computed from the specific and general loan loss allocation methods are combined with unallocated allowances and allowances needed for acquired loans to derive the total required allowance for loan losses to be reflected on the Consolidated Statement of Condition. Loan losses are charged off against the allowance, while recoveries of amounts previously charged off are credited to the allowance. A provision for loan losses is charged to operations based on management’s periodic evaluation of factors previously mentioned. Investment Securities The Company has classified its investments in debt and equity securities as either held-to-maturity or available-for-sale. Held-to-maturity securities are those for which the Company has the positive intent and ability to hold until maturity, and are reported at cost, which is adjusted for amortization of premiums and accretion of discounts. Securities classified as available-for-sale are reported at fair value with net unrealized gains and losses reflected as a separate component of shareholders' equity, net of applicable income taxes. None of the Company's investment securities have been classified as trading securities at September 30, 2015. Certain equity securities are stated at cost and include restricted stock of the Federal Reserve Bank of New York (“Federal Reserve”) and Federal Home Loan Bank of New York (“FHLB”). Fair values for investment securities are based upon quoted market prices, where available. If quoted market prices are not available, fair values are based upon quoted market prices of comparable instruments, or a discounted cash flow model using market estimates of interest rates and volatility. The Company conducts an assessment of all securities in an unrealized loss An OTTI loss must be recognized for a debt security in an unrealized loss position if there is intent to sell the security or it is more likely than not the Company will be required to sell the security prior to recovery of its amortized cost basis. In this situation, the amount of loss recognized in income is equal to the difference between the fair value and the amortized cost basis of the security. Even if management does not have the intent, and it is not more likely than not that the Company will be required to sell the securities, an evaluation of the expected cash flows to be received is performed to determine if a credit loss has occurred. For debt securities, a critical component of the evaluation for OTTI is the identification of credit-impaired securities, where the Company does not expect to receive cash flows sufficient to recover the entire amortized cost basis of the security. In the event of a credit loss, only the amount of impairment associated with the credit loss would be recognized in income. The portion of the unrealized loss relating to other factors, such as liquidity conditions in the market or changes in market interest rates, is recorded in accumulated other comprehensive loss. Equity securities are also evaluated to determine whether the unrealized loss is expected to be recoverable based on whether evidence exists to support a realizable value equal to or greater than the amortized cost basis. If it is probable that the amortized cost basis will not be recovered, taking into consideration the estimated recovery period and the ability to hold the equity security until recovery, OTTI is recognized in earnings equal to the difference between the fair value and the amortized cost basis of the security. The specific identification method is used in determining the realized gains and losses on sales of investment securities and OTTI charges. Premiums and discounts on securities are amortized and accreted, respectively, on the interest method basis over the period to maturity or estimated life of the related security. Purchases and sales of securities are recognized on a trade date basis. Intangible Assets Intangible assets include core deposit intangibles, customer relationship intangibles and goodwill arising from acquisitions. Core deposit intangibles and customer relationship intangibles are amortized on either an accelerated or straight-line basis over periods ranging from seven to 20 years. The initial and ongoing carrying value of goodwill and other intangible assets is based upon discounted cash flow modeling techniques that require management to make estimates regarding the amount and timing of expected future cash flows. It also requires use of a discount rate that reflects the current return requirements of the market in relation to present risk-free interest rates, required equity market premiums, peer volatility indicators, and company-specific risk indicators. The Company evaluates goodwill for impairment on an annual basis, or more often if events or circumstances indicate there may be impairment. The implied fair value of a reporting unit’s goodwill is compared to its carrying amount and the impairment loss is measured by the excess of the carrying value over fair value. The fair value of each reporting unit is compared to the carrying amount of that reporting unit in order to determine if impairment is indicated. Retirement Benefits The Company provides defined benefit pension benefits to eligible employees and post-retirement health and life insurance benefits to certain eligible retirees. The Company also provides deferred compensation and supplemental executive retirement plans for selected current and former employees, officers, and directors. Expense under these plans is charged to current operations and consists of several components of net periodic benefit cost based on various actuarial assumptions regarding future experience under the plans, including discount rate, rate of future compensation increases, and expected return on plan assets. New Accounting Pronouncements In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606) In May 2014, the FASB issued ASU No. 2015-16, Business Combinations: Simplifying the Accounting for Measurement-Period Adjustments (Topic 805)

INVESTMENT SECURITIES

INVESTMENT SECURITIES	9 Months Ended
	Sep. 30, 2015
INVESTMENT SECURITIES [Abstract]
INVESTMENT SECURITIES	NOTE D: INVESTMENT SECURITIES The amortized cost and estimated fair value of investment securities as of September 30, 2015 and December 31, 2014 are as follows: September 30, 2015 December 31, 2014 (000's omitted) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Available-for-Sale Portfolio: U.S. Treasury and agency securities $ 1,864,199 $ 69,071 $ 0 $ 1,933,270 $ 1,479,134 $ 39,509 $ 910 $ 1,517,733 Obligations of state and political subdivisions 662,774 24,374 521 686,627 645,398 26,749 244 671,903 Government agency mortgage-backed securities 208,817 8,087 968 215,936 228,971 9,782 1,025 237,728 Corporate debt securities 16,705 115 38 16,782 26,803 363 75 27,091 Government agency collateralized mortgage obligations 13,836 582 0 14,418 17,330 695 0 18,025 Marketable equity securities 250 167 11 406 250 195 0 445 Total available-for-sale portfolio $ 2,766,581 $ 102,396 $ 1,538 $ 2,867,439 $ 2,397,886 $ 77,293 $ 2,254 $ 2,472,925 Other Securities: Federal Home Loan Bank common stock $ 29,500 $ 29,500 $ 19,553 $ 19,553 Federal Reserve Bank common stock 16,050 16,050 16,050 16,050 Other equity securities 4,274 4,274 4,446 4,446 Total other securities $ 49,824 $ 49,824 $ 40,049 $ 40,049 A summary of investment securities that have been in a continuous unrealized loss position is as follows: As of September 30, 2015 Less than 12 Months 12 Months or Longer Total (000's omitted) # Fair Value Gross Unrealized Losses # Fair Value Gross Unrealized Losses # Fair Value Gross Unrealized Losses Available-for-Sale Portfolio: Obligations of state and political subdivisions 70 $ 38,526 $ 473 3 $ 1,198 $ 48 73 $ 39,724 $ 521 Government agency mortgage-backed securities 5 7,342 37 19 31,333 931 24 38,675 968 Corporate debt securities 0 0 0 1 2,745 38 1 2,745 38 Government agency collateralized mortgage obligations 0 0 0 2 4 0 2 4 0 Marketable equity securities 1 90 11 0 0 0 1 90 11 Total available-for-sale/investment portfolio 76 $ 45,958 $ 521 25 $ 35,280 $ 1,017 101 $ 81,238 $ 1,538 As of December 31, 2014 Less than 12 Months 12 Months or Longer Total (000's omitted) # Fair Value Gross Unrealized # Fair Value Gross Unrealized Losses # Fair Value Gross Unrealized Losses Available-for-Sale Portfolio: U.S. Treasury and agency obligations 0 $ 0 $ 0 4 $ 102,363 $ 910 4 $ 102,363 $ 910 Obligations of state and political subdivisions 23 13,413 34 46 26,490 210 69 39,903 244 Government agency mortgage-backed securities 3 5 0 19 34,770 1,025 22 34,775 1,025 Corporate debt securities 1 3,040 1 1 2,755 74 2 5,795 75 Government agency collateralized mortgage obligations 1 0 0 1 5 0 2 5 0 Total available-for-sale/investment portfolio 28 $ 16,458 $ 35 71 $ 166,383 $ 2,219 99 $ 182,841 $ 2,254 The unrealized losses reported pertaining to securities issued by the U.S. government and its sponsored entities, include treasuries, agencies, and mortgage-backed securities issued by the Government National Mortgage Association (“GNMA”), the Federal National Mortgage Association (“FNMA”), and the Federal Home Loan Corporation (“FHLMC”), which are currently rated AAA by Moody’s Investor Services, AA+ by Standard & Poor’s and are guaranteed by the U.S. government. The majority of the obligations of state and political subdivisions and corporations carry a credit rating of A or better. Additionally, a majority of the obligations of state and political subdivisions carry a secondary level of credit enhancement. The Company does not intend to sell these securities, nor is it more likely than not that the Company will be required to sell these securities prior to recovery of the amortized cost. The unrealized losses in the portfolios are primarily attributable to changes in interest rates. As such, management does not believe any individual unrealized loss as of September 30, 2015 represents OTTI. The amortized cost and estimated fair value of debt securities at September 30, 2015, by contractual maturity, are shown below. Expected maturities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. Securities not due at a single maturity date are shown separately. Available-for-Sale (000's omitted) Amortized Cost Fair Value Due in one year or less $ 43,499 $ 43,925 Due after one through five years 157,648 161,758 Due after five years through ten years 2,094,774 2,173,882 Due after ten years 247,757 257,114 Subtotal 2,543,678 2,636,679 Government agency mortgage-backed securities 208,817 215,936 Government agency collateralized mortgage obligations 13,836 14,418 Total $ 2,766,331 $ 2,867,033

LOANS

LOANS	9 Months Ended
	Sep. 30, 2015
LOANS [Abstract]
LOANS	NOTE E: LOANS The segments of the Company’s loan portfolio are disaggregated into the following classes that allow management to monitor risk and performance: · Consumer mortgages consist primarily of fixed rate residential instruments, typically 10 – 30 years in contractual term, secured by first liens on real property. · Business lending is comprised of general purpose commercial and industrial loans including, but not limited to, agricultural-related and dealer floor plans, as well as mortgages on commercial properties. · Consumer indirect consists primarily of installment loans originated through selected dealerships and are secured by automobiles, marine and other recreational vehicles. · Consumer direct consists of all other loans to consumers such as personal installment loans and lines of credit. · Home equity products are consumer purpose installment loans or lines of credit most often secured by a first or second lien position on residential real estate with terms up to 30 years. The balances of these classes are summarized as follows: (000's omitted) September 30, December 31, Consumer mortgage $ 1,621,862 $ 1,613,384 Business lending 1,288,772 1,262,484 Consumer indirect 872,988 833,968 Consumer direct 184,479 184,028 Home equity 345,446 342,342 Gross loans 4,313,547 4,236,206 Allowance for loan losses (45,588 ) (45,341 ) Loans, net of allowance for loan losses $ 4,267,959 $ 4,190,865 The outstanding balance related to credit impaired acquired loans was $5.2 million and $6.1 million at September 30, 2015 and December 31, 2014, respectively. The changes in the accretable discount related to the credit impaired acquired loans are as follows: (000’s omitted) Balance at December 31, 2014 $ 705 Accretion recognized, year-to-date (437 ) Net reclassification to accretable from non-accretable 329 Balance at September 30, 2015 $ 597 Credit Quality Management monitors the credit quality of its loan portfolio on an ongoing basis. Measurement of delinquency and past due status are based on the contractual terms of each loan. Past due loans are reviewed on a monthly basis to identify loans for non-accrual status. The following is an aged analysis of the Company’s past due loans, by class as of September 30, 2015: Legacy Loans (000’s omitted) Past Due 30 – 89 Days 90+ Days Past Due and Still Accruing Nonaccrual Total Past Due Current Total Loans Consumer mortgage $ 10,115 $ 1,351 $ 12,108 $ 23,574 $ 1,538,515 $ 1,562,089 Business lending 2,187 135 6,402 8,724 1,159,228 1,167,952 Consumer indirect 9,785 58 0 9,843 862,571 872,414 Consumer direct 1,148 41 1 1,190 179,428 180,618 Home equity 1,023 291 1,993 3,307 289,015 292,322 Total $ 24,258 $ 1,876 $ 20,504 $ 46,638 $ 4,028,757 $ 4,075,395 Acquired Loans (000’s omitted) Past Due 30 – 89 Days 90+ Days Past Due and Nonaccrual Total Acquired (1) Current Total Loans Consumer mortgage $ 1,271 $ 130 $ 1,473 $ 2,874 $ 0 $ 56,899 $ 59,773 Business lending 192 0 710 902 4,675 115,243 120,820 Consumer indirect 25 0 0 25 0 549 574 Consumer direct 126 0 14 140 0 3,721 3,861 Home equity 446 69 432 947 0 52,177 53,124 Total $ 2,060 $ 199 $ 2,629 $ 4,888 $ 4,675 $ 228,589 $ 238,152 (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 cashflows, is being recognized on all acquired impaired loans. The following is an aged analysis of the Company’s past due loans by class as of December 31, 2014: Legacy Loans (000’s omitted) Past Due 90+ Days Past Nonaccrual Total Current Total Loans Consumer mortgage $ 13,978 $ 2,165 $ 13,201 $ 29,344 $ 1,515,057 $ 1,544,401 Business lending 6,738 350 2,291 9,379 1,115,215 1,124,594 Consumer indirect 10,529 82 10 10,621 822,124 832,745 Consumer direct 1,389 36 2 1,427 177,158 178,585 Home equity 1,802 195 2,172 4,169 278,904 283,073 Total $ 34,436 $ 2,828 $ 17,676 $ 54,940 $ 3,908,458 $ 3,963,398 Acquired Loans (000’s omitted) Past Due 90+ Days Past Nonaccrual Total Acquired (1) Current Total Loans Consumer mortgage $ 1,892 $ 232 $ 2,122 $ 4,246 $ 0 $ 64,737 $ 68,983 Business lending 608 0 489 1,097 5,312 131,481 137,890 Consumer indirect 40 0 0 40 0 1,183 1,223 Consumer direct 174 0 18 192 0 5,251 5,443 Home equity 674 46 426 1,146 0 58,123 59,269 Total $ 3,388 $ 278 $ 3,055 $ 6,721 $ 5,312 $ 260,775 $ 272,808 (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 cashflows, is being recognized on all acquired impaired loans. The Company uses several credit quality indicators to assess credit risk in an ongoing manner. The Company’s primary credit quality indicator for its business lending portfolio is an internal credit risk rating system that categorizes loans as “pass”, “special mention”, or “classified”. Credit risk ratings are applied individually to those classes of loans that have significant or unique credit characteristics that benefit from a case-by-case evaluation. In general, the following are the definitions of the Company’s credit quality indicators: Pass The condition of the borrower and the performance of the loans are satisfactory or better. Special Mention The condition of the borrower has deteriorated although the loan performs as agreed. Classified The condition of the borrower has significantly deteriorated and the performance of the loan could further deteriorate, if deficiencies are not corrected. Doubtful The condition of the borrower has deteriorated to the point that collection of the balance is improbable based on current facts and conditions. The following table shows the amount of business lending loans by credit quality category: September 30, 2015 December 31, 2014 (000’s omitted) Legacy Acquired Total Legacy Acquired Total Pass $ 990,125 $ 84,944 $ 1,075,069 $ 949,960 $ 93,510 $ 1,043,470 Special mention 111,496 15,343 126,839 103,176 18,038 121,214 Classified 65,831 15,858 81,689 71,458 21,030 92,488 Doubtful 500 0 500 0 0 0 Acquired impaired 0 4,675 4,675 0 5,312 5,312 Total $ 1,167,952 $ 120,820 $ 1,288,772 $ 1,124,594 $ 137,890 $ 1,262,484 All other loans are underwritten and structured using standardized criteria and characteristics, primarily payment performance, and are normally risk rated and monitored collectively on a monthly basis. These are typically loans to individuals in the consumer categories and are delineated as either performing or nonperforming. Performing loans include loans classified as current as well as those classified as 30 - 89 days past due. Nonperforming loans include 90+ days past due and still accruing and nonaccrual loans. The following table details the balances in all other loan categories at September 30, 2015: Legacy Loans (000’s omitted) Consumer Mortgage Consumer Indirect Consumer Direct Home Equity Total Performing $ 1,548,630 $ 872,356 $ 180,576 $ 290,038 $ 2,891,600 Nonperforming 13,459 58 42 2,284 15,843 Total $ 1,562,089 $ 872,414 $ 180,618 $ 292,322 $ 2,907,443 Acquired Loans (000’s omitted) Consumer Mortgage Consumer Indirect Consumer Direct Home Equity Total Performing $ 58,170 $ 574 $ 3,847 $ 52,623 $ 115,214 Nonperforming 1,603 0 14 501 2,118 Total $ 59,773 $ 574 $ 3,861 $ 53,124 $ 117,332 The following table details the balances in all other loan categories at December 31, 2014: Legacy Loans (000’s omitted) Consumer Mortgage Consumer Indirect Consumer Direct Home Equity Total Performing $ 1,529,035 $ 832,653 $ 178,547 $ 280,706 $ 2,820,941 Nonperforming 15,366 92 38 2,367 17,863 Total $ 1,544,401 $ 832,745 $ 178,585 $ 283,073 $ 2,838,804 Acquired Loans (000’s omitted) Consumer Mortgage Consumer Indirect Consumer Direct Home Equity Total Performing $ 66,629 $ 1,223 $ 5,425 $ 58,797 $ 132,074 Nonperforming 2,354 0 18 472 2,844 Total $ 68,983 $ 1,223 $ 5,443 $ 59,269 $ 134,918 All loan classes are collectively evaluated for impairment except business lending, as described in Note C. A summary of individually evaluated impaired loans as of September 30, 2015 and December 31, 2014 follows: (000’s omitted) September 30, 2015 December 31, 2014 Loans with allowance allocation $ 2,800 $ 0 Loans without allowance allocation 1,086 0 Carrying balance 3,886 0 Contractual balance 3,986 0 Specifically allocated allowance 566 0 In the course of working with borrowers, the Company may choose to restructure the contractual terms of certain loans. In this scenario, the Company attempts to work-out an alternative payment schedule with the borrower in order to optimize collectability of the loan. Any loans that are modified are reviewed by the Company to identify if a troubled debt restructuring (“TDR”) has occurred, which is when, for economic or legal reasons related to a borrower’s financial difficulties, the Company grants a concession to the borrower that it would not otherwise consider. Terms may be modified to fit the ability of the borrower to repay in line with its current financial standing and the restructuring of the loan may include the transfer of assets from the borrower to satisfy the debt, a modification of loan terms, or a combination of the two. In accordance with the clarified guidance issued by the Office of the Comptroller of the Currency (“OCC”), loans that have been discharged in Chapter 7 bankruptcy but not reaffirmed by the borrower, are classified as TDRs, irrespective of payment history or delinquency status, even if the repayment terms for the loan have not been otherwise modified. The Company’s lien position against the underlying collateral remains unchanged. Pursuant to that guidance, the Company records a charge-off equal to any portion of the carrying value that exceeds the net realizable value of the collateral. The amount of loss incurred in 2015 and 2014 was immaterial. TDRs that are less than $0.5 million are collectively included in the general loan loss allocation and the qualitative review. TDRs that are commercial loans and greater than $0.5 million are individually evaluated for impairment, and if necessary, a specific allocation of the allowance for loan losses is provided. As a result, the determination of the amount of allowance for loan losses related to TDRs is the same as detailed in the critical accounting policies. Information regarding TDRs as of September 30, 2015 and December 31, 2014 is as follows: September 30, 2015 December 31, 2014 (000’s omitted) Nonaccrual Accruing Total Nonaccrual Accruing Total # Amount # Amount # Amount # Amount # Amount # Amount Consumer mortgage 41 $ 1,500 38 $ 1,595 79 $ 3,095 49 $ 2,092 37 $ 1,770 86 $ 3,862 Business lending 3 117 4 567 7 684 6 442 3 468 9 910 Consumer indirect 0 0 74 700 74 700 0 0 79 615 79 615 Consumer direct 0 0 16 35 16 35 0 0 25 69 25 69 Home equity 7 101 12 258 19 359 13 218 13 278 26 496 Total 51 $ 1,718 144 $ 3,155 195 $ 4,873 68 $ 2,752 157 $ 3,200 225 $ 5,952 The following table presents information related to loans modified in a TDR during the three and nine months ended September 30, 2015 and 2014. Of the loans noted in the table below, all loans for the three and nine months ended September 30, 2015 and 2014 were modified due to a Chapter 7 bankruptcy as described previously. The financial effects of these restructurings were immaterial. Three Months Ended September 30, 2015 Three Months Ended September 30, 2014 (000’s omitted) Number of loans modified Outstanding Balance Number of loans modified Outstanding Balance Consumer mortgage 4 $ 404 6 $ 283 Business lending 0 0 0 0 Consumer indirect 12 112 16 165 Consumer direct 1 0 5 7 Home equity 0 0 0 0 Total 17 $ 516 27 $ 455 Nine Months Ended September 30, 2015 Nine Months Ended September 30, 2014 (000’s omitted) Number of loans modified Outstanding Balance Number of loans modified Outstanding Balance Consumer mortgage 8 $ 585 22 $ 1,016 Business lending 0 0 7 556 Consumer indirect 23 263 29 334 Consumer direct 2 1 7 14 Home equity 1 13 5 173 Total 34 $ 862 70 $ 2,093 Allowance for Loan Losses The allowance for loan losses is general in nature and is available to absorb losses from any loan type despite the analysis below. The following presents by class the activity in the allowance for loan losses: Three Months Ended (000’s omitted) Consumer Mortgage Business Lending Consumer Indirect Consumer Direct Home Equity Unallocated Acquired Impaired Total Beginning balance $ 10,192 $ 15,353 $ 11,602 $ 2,991 $ 2,677 $ 2,374 $ 93 $ 45,282 Charge-offs (276 ) (234 ) (1,597 ) (427 ) (66 ) 0 (59 ) (2,659 ) Recoveries 9 107 740 174 29 0 0 1,059 Provision 421 112 1,367 359 102 (461 ) 6 1,906 Ending balance $ 10,346 $ 15,338 $ 12,112 $ 3,097 $ 2,742 $ 1,913 $ 40 $ 45,588 Three Months Ended (000’s omitted) Consumer Mortgage Business Lending Consumer Consumer Home Unallocated Acquired Total Beginning balance $ 9,375 $ 16,553 $ 11,354 $ 3,298 $ 1,860 $ 2,012 $ 163 $ 44,615 Charge-offs (203 ) (435 ) (1,711 ) (307 ) (74 ) 0 (10 ) (2,740 ) Recoveries 14 335 1,025 239 38 0 0 1,651 Provision 268 138 1,231 100 77 (65 ) (2 ) 1,747 Ending balance $ 9,454 $ 16,591 $ 11,899 $ 3,330 $ 1,901 $ 1,947 $ 151 $ 45,273 Nine Months Ended (000’s omitted) Consumer Business Consumer Consumer Home Unallocated Acquired Total Beginning balance $ 10,286 $ 15,787 $ 11,544 $ 3,083 $ 2,701 $ 1,767 $ 173 $ 45,341 Charge-offs (917 ) (667 ) (4,421 ) (1,066 ) (188 ) 0 (102 ) (7,361 ) Recoveries 75 715 3,077 566 55 0 0 4,488 Provision 902 (497 ) 1,912 514 174 146 (31 ) 3,120 Ending balance $ 10,346 $ 15,338 $ 12,112 $ 3,097 $ 2,742 $ 1,913 $ 40 $ 45,588 Nine Months Ended (000’s omitted) Consumer Business Consumer Consumer Home Unallocated Acquired Total Beginning balance $ 8,994 $ 17,507 $ 10,248 $ 3,181 $ 1,830 $ 2,029 $ 530 $ 44,319 Charge-offs (734 ) (940 ) (4,573 ) (1,219 ) (450 ) 0 (30 ) (7,946 ) Recoveries 67 607 2,826 677 76 0 0 4,253 Provision 1,127 (583 ) 3,398 691 445 (82 ) (349 ) 4,647 Ending balance $ 9,454 $ 16,591 $ 11,899 $ 3,330 $ 1,901 $ 1,947 $ 151 $ 45,273

GOODWILL AND IDENTIFIABLE INTAN

GOODWILL AND IDENTIFIABLE INTANGIBLE ASSETS	9 Months Ended
	Sep. 30, 2015
GOODWILL AND IDENTIFIABLE INTANGIBLE ASSETS [Abstract]
GOODWILL AND IDENTIFIABLE INTANGIBLE ASSETS	NOTE F: GOODWILL AND IDENTIFIABLE INTANGIBLE ASSETS The gross carrying amount and accumulated amortization for each type of identifiable intangible asset are as follows: September 30, 2015 December 31, 2014 (000's omitted) Gross Accumulated Net Gross Accumulated Net Amortizing intangible assets: Core deposit intangibles $ 40,326 $ (32,432 ) $ 7,894 $ 40,326 $ (30,303 ) $ 10,023 Other intangibles 10,213 (8,756 ) 1,457 10,019 (8,243 ) 1,776 Total amortizing intangibles $ 50,539 $ (41,188 ) $ 9,351 $ 50,345 $ (38,546 ) $ 11,799 The estimated aggregate amortization expense for each of the five succeeding fiscal years ended December 31 is as follows: (000's omitted) Oct - Dec 2015 $ 788 2016 2,652 2017 1,943 2018 1,453 2019 1,026 Thereafter 1,489 Total $ 9,351 Shown below are the components of the Company’s goodwill at December 31, 2014 and September 30, 2015: (000’s omitted) December 31, 2014 Activity September 30, 2015 Goodwill $ 379,998 $ 0 $ 379,998 Accumulated impairment (4,824 ) 0 (4,824 ) Goodwill, net $ 375,174 $ 0 $ 375,174

MANDATORILY REDEEMABLE PREFERRE

MANDATORILY REDEEMABLE PREFERRED SECURITIES	9 Months Ended
	Sep. 30, 2015
MANDATORILY REDEEMABLE PREFERRED SECURITIES [Abstract]
MANDATORILY REDEEMABLE PREFERRED SECURITIES	NOTE G: MANDATORILY REDEEMABLE PREFERRED SECURITIES The Company sponsors two business trusts, Community Statutory Trust III and Community Capital Trust IV, of which 100% of the common stock is owned by the Company. The trusts were formed for the purpose of issuing company-obligated mandatorily redeemable preferred securities to third-party investors and investing the proceeds from the sale of such preferred securities solely in junior subordinated debt securities of the Company. The debentures held by each trust are the sole assets of that trust. Distributions on the preferred securities issued by each trust are payable quarterly at a rate per annum equal to the interest rate being earned by the trust on the debentures held by that trust and are recorded as interest expense in the consolidated financial statements. The preferred securities are subject to mandatory redemption, in whole or in part, upon repayment of the debentures. The Company has entered into agreements which, taken collectively, fully and unconditionally guarantee the preferred securities subject to the terms of each of the guarantees. The terms of the preferred securities of each trust are as follows: Trust Issuance Par Interest Rate Date Call Price III 7/31/2001 $24.5 million 3 month LIBOR plus 3.58% (3.88%) 7/31/2031 Par IV 12/8/2006 $75 million 3 month LIBOR plus 1.65% (1.99%) 12/15/2036 Par

BENEFIT PLANS

BENEFIT PLANS	9 Months Ended
	Sep. 30, 2015
BENEFIT PLANS [Abstract]
BENEFIT PLANS	NOTE H: BENEFIT PLANS The Company provides a qualified defined benefit pension to eligible employees and retirees, other post-retirement health and life insurance benefits to certain retirees, an unfunded supplemental pension plan for certain key executives, and an unfunded stock balance plan for certain of its nonemployee directors. The Company accrues for the estimated cost of these benefits through charges to expense during the years that employees earn these benefits. No contributions to the defined benefit pension plan are required or planned for 2015. The net periodic benefit cost for the three and nine months ended September 30, 2015 and 2014 is as follows: Pension Benefits Post-retirement Benefits Three Months Ended Nine Months Ended Three Months Ended Nine Months Ended (000's omitted) 2015 2014 2015 2014 2015 2014 2015 2014 Service cost $ 831 $ 882 $ 2,493 $ 2,647 $ 0 $ 0 $ 0 $ 0 Interest cost 1,375 1,318 4,124 3,953 22 26 65 76 Expected return on plan assets (3,042 ) (2,980 ) (9,127 ) (8,941 ) 0 0 0 0 Amortization of unrecognized net loss 366 (77 ) 1,099 (230 ) (3 ) (2 ) (10 ) (5 ) Amortization of prior service cost 2 1 6 4 (45 ) (45 ) (134 ) (134 ) Net periodic benefit income $ (468 ) $ (856 ) $ (1,405 ) $ (2,567 ) $ (26 ) $ (21 ) $ (79 ) $ (63 )

EARNINGS PER SHARE

EARNINGS PER SHARE	9 Months Ended
	Sep. 30, 2015
EARNINGS PER SHARE [Abstract]
EARNINGS PER SHARE	NOTE I: EARNINGS PER SHARE Basic earnings per share are computed based on the weighted-average of the common shares outstanding for the period. Diluted earnings per share are based on the weighted-average of the shares outstanding adjusted for the dilutive effect of restricted stock and the assumed exercise of stock options during the year. The dilutive effect of options is calculated using the treasury stock method of accounting. The treasury stock method determines the number of common shares that would be outstanding if all the dilutive options (those where the average market price is greater than the exercise price) were exercised and the proceeds were used to repurchase common shares in the open market at the average market price for the applicable time period. There were approximately 0.6 million weighted-average anti-dilutive stock options outstanding for the three months ended September 30, 2015, and approximately 0.5 million weighted-average anti-dilutive stock options outstanding for the nine months ended September 30, 2015, compared to approximately 0.3 million weighted-average anti-dilutive stock options outstanding for the three months ended September 30, 2014, and approximately 0.2 million weighted-average anti-dilutive stock options outstanding for the nine months ended September 30, 2014 that were not included in the computation below. The following is a reconciliation of basic to diluted earnings per share for the three and nine months ended September 30, 2015 Three Months Ended 30, Nine Months Ended 30, (000's omitted, except per share data) 2015 2014 2015 2014 Net income $ 25,022 $ 22,371 $ 71,159 $ 68,220 Income attributable to unvested stock-based compensation awards (129 ) (115 ) (352 ) (337 ) Income available to common shareholders 24,893 22,256 70,807 67,883 Weighted-average common shares outstanding – basic 40,873 40,596 40,741 40,543 Basic earnings per share $ 0.61 $ 0.55 $ 1.74 $ 1.67 Net income $ 25,022 $ 22,371 $ 71,159 $ 68,220 Income attributable to unvested stock-based compensation awards (129 ) (115 ) (352 ) (337 ) Income available to common shareholders 24,893 22,256 70,807 67,883 Weighted-average common shares outstanding – basic 40,873 40,596 40,741 40,543 Assumed exercise of stock options 386 453 400 482 Weighted-average common shares outstanding – diluted 41,259 41,049 41,141 41,025 Diluted earnings per share $ 0.60 $ 0.54 $ 1.72 $ 1.65 Stock Repurchase Program At its December 2014 meeting, the Company’s Board of Directors (the “Board”) approved a new repurchase program authorizing the repurchase of up to 2,000,000 shares of the Company’s common stock, in accordance with securities laws and regulations, through December 31, 2015. Any repurchased shares will be used for general corporate purposes, including those related to stock plan activities. The timing and extent of repurchases will depend on market conditions and other corporate considerations as determined at the Company’s discretion. During the first nine months of 2015, the Company repurchased 265,230 shares of its common stock in open market transactions, compared to 123,000 shares repurchased during 2014.

COMMITMENTS, CONTINGENT LIABILI

COMMITMENTS, CONTINGENT LIABILITIES AND RESTRICTIONS	9 Months Ended
	Sep. 30, 2015
COMMITMENTS, CONTINGENT LIABILITIES AND RESTRICTIONS [Abstract]
COMMITMENTS, CONTINGENT LIABILITIES AND RESTRICTIONS	NOTE J: COMMITMENTS, CONTINGENT LIABILITIES AND RESTRICTIONS The Company is a party to financial instruments with off-balance sheet risk in the normal course of business to meet the financing needs of its customers. These financial instruments consist primarily of commitments to extend credit and standby letters of credit. Commitments to extend credit are agreements to lend to customers, generally having fixed expiration dates or other termination clauses that may require payment of a fee. These commitments consist principally of unused commercial and consumer credit lines. Standby letters of credit generally are contingent upon the failure of the customer to perform according to the terms of an underlying contract with a third party. The credit risks associated with commitments to extend credit and standby letters of credit are essentially the same as that involved with extending loans to customers and are subject to the Company’s normal credit policies. Collateral may be obtained based on management’s assessment of the customer’s creditworthiness. The fair value of the standby letters of credit is immaterial for disclosure. The contract amounts of commitments and contingencies are as follows: (000's omitted) September 30, 2015 December 31, 2014 Commitments to extend credit $ 730,652 $ 733,827 Standby letters of credit 18,280 23,916 Total $ 748,932 $ 757,743 The Company and its subsidiaries are subject in the normal course of business to various pending and threatened legal proceedings in which claims for monetary damages are asserted. As of September 30, 2015, management, after consultation with legal counsel, does not anticipate that the aggregate ultimate liability arising out of litigation pending or threatened against the Company or its subsidiaries will be material to the Company’s consolidated financial position. On at least a quarterly basis, the Company assesses its liabilities and contingencies in connection with such legal proceedings. For those matters where it is probable that the Company will incur losses and the amounts of the losses can be reasonably estimated, the Company records an expense and corresponding liability in its consolidated financial statements. To the extent the pending or threatened litigation could result in exposure in excess of that liability, the amount of such excess is not currently estimable. The range of reasonably possible losses for matters where an exposure is not currently estimable or considered probable, beyond the existing recorded liabilities, is between $0 and $1 million in the aggregate. Although the Company does not believe that the outcome of pending litigation will be material to the Company’s consolidated financial position, it cannot rule out the possibility that such outcomes will be material to the consolidated results of operations for a particular reporting period in the future. On July 14, 2015, the Court issued an order preliminarily approving the settlement reached in the first of two related class actions pending in the United States District Court for the Middle District of Pennsylvania, which cases were commenced on October 30, 2013 and May 23, 2014, respectively. The two related cases allege, on behalf of similarly situated class members, that notices provided by the Bank in connection with the repossession of automobiles failed to comply with certain requirements of the Pennsylvania and New York Uniform Commercial Code and related statutes. In accordance with mediation which occurred in September 2014, the settlement provides for establishment of a settlement fund of $2.8 million in exchange for release of all claims of the class members covered by these actions. A litigation settlement charge of $2.8 million with respect to the settlement of the class actions was previously recorded in the third quarter of 2014. The settlement is subject to the Court’s final approval following notice to the class members, including the ability of class members to oppose or opt-out of the settlement.

FAIR VALUE

FAIR VALUE	9 Months Ended
	Sep. 30, 2015
FAIR VALUE [Abstract]
FAIR VALUE	NOTE K: FAIR VALUE Accounting standards establish a framework for measuring fair value and require certain disclosures about such fair value instruments. It defines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date (i.e. exit price). Inputs used to measure fair value are classified into the following hierarchy: · Level 1 – Quoted prices in active markets for identical assets or liabilities. · Level 2 – Quoted prices in active markets for similar assets or liabilities, or quoted prices for identical or similar assets or liabilities in markets that are not active, or inputs other than quoted prices that are observable for the asset or liability. · Level 3 – Significant valuation assumptions not readily observable in a market. A financial instrument’s categorization within the valuation hierarchy is based upon the lowest level of input that is significant to the fair value measurement. The following tables set forth the Company’s financial assets and liabilities that were accounted for at fair value on a recurring basis. There were no transfers between any of the levels for the periods presented. September 30, 2015 (000's omitted) Level 1 Level 2 Level 3 Total Fair Value Available-for-sale investment securities: U.S. Treasury and agency securities $ 1,933,270 $ 0 $ 0 $ 1,933,270 Obligations of state and political subdivisions 0 686,627 0 686,627 Government agency mortgage-backed securities 0 215,936 0 215,936 Corporate debt securities 0 16,782 0 16,782 Government agency collateralized mortgage obligations 0 14,418 0 14,418 Marketable equity securities 406 0 0 406 Total available-for-sale investment securities 1,933,676 933,763 0 2,867,439 Mortgage loans held for sale 0 1,014 0 1,014 Commitments to originate real estate loans for sale 0 0 276 276 Forward sales commitments 0 (94 ) 0 (94 ) Total $ 1,933,676 $ 934,683 $ 276 $ 2,868,635 December 31, 2014 (000's omitted) Level 1 Level 2 Level 3 Total Fair Value Available-for-sale investment securities: U.S. Treasury and agency securities $ 1,496,667 $ 21,066 $ 0 $ 1,517,733 Obligations of state and political subdivisions 0 671,903 0 671,903 Government agency mortgage-backed securities 0 237,728 0 237,728 Corporate debt securities 0 27,091 0 27,091 Government agency collateralized mortgage obligations 0 18,025 0 18,025 Marketable equity securities 445 0 0 445 Total available-for-sale investment securities 1,497,112 975,813 0 2,472,925 Mortgage loans held for sale 0 1,042 0 1,042 Commitments to originate real estate loans for sale 0 0 185 185 Forward sales commitments 0 (43 ) 0 (43 ) Total $ 1,497,112 $ 976,812 $ 185 $ 2,474,109 The valuation techniques used to measure fair value for the items in the table above are as follows: · Available for sale investment securities – The fair values of available-for-sale investment securities are based upon quoted prices, if available. If quoted prices are not available, fair values are measured using quoted market prices for similar securities or model-based valuation techniques. Level 1 securities include U.S. Treasury obligations and marketable equity securities that are traded by dealers or brokers in active over-the-counter markets. Level 2 securities include U.S. agency securities, mortgage-backed securities issued by government-sponsored entities, municipal securities and corporate debt securities that are valued by reference to prices for similar securities or through model-based techniques in which all significant inputs, such as reported trades, trade execution data, LIBOR swap yield curve, market prepayment speeds, credit information, market spreads, and security’s terms and conditions, are observable. See Note D for further disclosure of the fair value of investment securities. · Mortgage loans held for sale –The Company has elected to value loans held for sale at fair value in order to more closely match the gains and losses associated with loans held for sale with the gains and losses on forward sales contracts. Accordingly, the impact on the valuation will be recognized in the Company’s consolidated statement of income. All mortgage loans held for sale are current and in performing status. The fair value of mortgage loans held for sale is determined using quoted secondary-market prices of loans with similar characteristics and, as such, have been classified as a Level 2 valuation. The unpaid principal value of mortgage loans held for sale at September 30, 2015 is approximately $1.0 million. The unrealized gain on mortgage loans held for sale was recognized in mortgage banking and other income in the consolidated statement and is immaterial. · Forward sales commitments – The Company enters into forward sales commitments to sell certain residential real estate loans. Such commitments are considered to be derivative financial instruments and, therefore, are carried at estimated fair value in the other asset or other liability section of the consolidated balance sheet. The fair value of these forward sales commitments is primarily measured by obtaining pricing from certain government-sponsored entities and reflects the underlying price the entity would pay the Company for an immediate sale on these mortgages. As such, these instruments are classified as Level 2 in the fair value hierarchy. · Commitments to originate real estate loans for sale – The Company enters into various commitments to originate residential real estate loans for sale. Such commitments are considered to be derivative financial instruments and, therefore, are carried at estimated fair value in the other asset or other liability section of the consolidated balance sheet. The estimated fair value of these commitments is determined using quoted secondary market prices obtained from certain government-sponsored entities. Additionally, accounting guidance requires the expected net future cash flows related to the associated servicing of the loan to be included in the fair value measurement of the derivative. The expected net future cash flows are based on a valuation model that calculates the present value of estimated net servicing income. The valuation model incorporates assumptions that market participants would use in estimating future net servicing income. Such assumptions include estimates of the cost of servicing loans, appropriate discount rate and prepayment speeds. The determination of expected net cash flows is considered a significant unobservable input contributing to the Level 3 classification of commitments to originate real estate loans for sale. The changes in Level 3 assets measured at fair value on a recurring basis are summarized in the following tables: Three Months Ended September 30, Nine Months Ended September 30, 2015 2014 2015 2014 (000's omitted) Commitments to Originate Real Estate Loans for Sale Commitments toOriginate Real Estate Loans for Sale Commitments to Originate Real Estate Loans for Sale Commitments to Originate Real Estate Loans for Sale Beginning balance $ 195 $ 142 $ 185 $ 44 Total losses included in earnings (1) (195 ) (142 ) (532 ) (253 ) Commitments to originate real estate loans held for sale, net 276 170 623 379 Ending balance $ 276 $ 170 $ 276 $ 170 (1) Amounts included in earnings associated with the commitments to originate real estate loans for sale are reported as a component of other banking services in the Consolidated Statement of Income. Assets and liabilities measured on a non-recurring basis: September 30, 2015 December 31, 2014 (000's omitted) Level 1 Level 2 Level 3 Total Fair Value Level 1 Level 2 Level 3 Total Fair Value Impaired loans $ 0 $ 0 $ 2,708 $ 2,708 $ 0 $ 0 $ 0 $ 0 Other real estate owned 0 0 2,531 2,531 0 0 1,855 1,855 Mortgage servicing rights 0 0 553 553 0 0 0 0 Total $ 0 $ 0 $ 5,792 $ 5,792 $ 0 $ 0 $ 1,855 $ 1,855 Loans are generally not recorded at fair value on a recurring basis. Periodically, the Company records nonrecurring adjustments to the carrying value of loans based on fair value measurements for partial charge-offs of the uncollectible portions of those loans. Nonrecurring adjustments also include certain impairment amounts for collateral-dependent loans calculated when establishing the allowance for credit losses. Such amounts are generally based on the fair value of the underlying collateral supporting the loan and, as a result, the carrying value of the loan less the calculated valuation amount does not necessarily represent the fair value of the loan. Real estate collateral is typically valued using independent appraisals or other indications of value based on recent comparable sales of similar properties or assumptions generally observable in the marketplace, adjusted for non-observable inputs. Thus, the resulting nonrecurring fair value measurements are generally classified as Level 3. Estimates of fair value used for other collateral supporting commercial loans generally are based on assumptions not observable in the marketplace and, therefore, such valuations classify as Level 3. Other real estate owned (“OREO”) is valued at the time the loan is foreclosed upon and the asset is transferred to OREO. The value is based primarily on third party appraisals, less costs to sell. The appraisals are sometimes further discounted based on management’s historical knowledge, changes in market conditions from the time of valuation, and/or management’s expertise and knowledge of the customer and customer’s business. Such discounts are significant, ranging from 5% to 65% at September 30, 2015 and result in a Level 3 classification of the inputs for determining fair value. OREO is reviewed and evaluated on at least a quarterly basis for additional impairment and adjusted accordingly, based on the same factors identified above. The Company recovers the carrying value of OREO through the sale of the property. The ability to affect future sales prices is subject to market conditions and factors beyond the Company’s control and may impact the estimated fair value of a property. Originated mortgage servicing rights are recorded at their fair value at the time of sale of the underlying loan, and are amortized in proportion to and over the estimated period of net servicing income. The fair value of mortgage servicing rights is based on a valuation model incorporating inputs that market participants would use in estimating future net servicing income. Such inputs include estimates of the cost of servicing loans, appropriate discount rate and prepayment speeds and are considered to be unobservable and contribute to the Level 3 classification of mortgage servicing rights. In accordance with GAAP, the Company must record impairment charges, on a nonrecurring basis, when the carrying value of a stratum exceeds its estimated fair value. Impairment is recognized through a valuation allowance. There is an immaterial valuation allowance at September 30, 2015. The Company determines fair values based on quoted market values, where available, estimates of present values, or other valuation techniques. Those techniques are significantly affected by the assumptions used, including, but not limited to, the discount rate and estimates of future cash flows. In that regard, the derived fair value estimates cannot be substantiated by comparison to independent markets and, in many cases, may not be realized in immediate settlement of the instrument. The significant unobservable inputs used in the determination of fair value of assets classified as Level 3 on a recurring or non-recurring basis are as follows: (000's omitted) Fair Value at September 30, 2015 Valuation Technique Significant Unobservable Inputs Significant Unobservable Input Range (Weighted Average) Impaired loans $ 2,708 Fair Value of Collateral Estimated cost of disposal/market adjustment 10.0% - 65.6% (61.5 %) Other real estate owned 2,531 Fair Value of Collateral Estimated cost of disposal/market adjustment 5.4% - 64.7% (23.9 %) Commitments to originate real estate loans for sale 276 Discounted cash flow Embedded servicing value 1 % Mortgage servicing rights 553 Discounted cash flow Weighted average constant prepayment rate 11.4 % Weighted average discount rate 3.62 % Adequate compensation $7/loan The significant unobservable inputs used in the determination of fair value of assets classified as Level 3 on a recurring or non-recurring basis as of December 31, 2014 are as follows: (000's omitted) Fair Value at December 31, 2014 Valuation Technique Significant Unobservable Inputs Significant Unobservable Input Range (Weighted Average) Other real estate owned $ 1,855 Fair value of collateral Estimated cost of disposal/market adjustment 10.0% - 77.5% (30.6 %) Commitments to originate real estate loans for sale 185 Discounted cash flow Embedded servicing value 1 % Certain financial instruments and all nonfinancial instruments are excluded from fair value disclosure requirements. Accordingly, the aggregate fair value amounts presented do not represent the underlying value of the Company. The carrying amounts and estimated fair values of the Company’s other financial instruments that are not accounted for at fair value at September 30, 2015 and December 31, 2014 are as follows: September 30, 2015 December 31, 2014 (000's omitted) Carrying Fair Carrying Fair Financial assets: Net loans $ 4,267,959 $ 4,317,941 $ 4,190,865 $ 4,251,565 Financial liabilities: Deposits 6,148,110 6,147,341 5,935,264 5,935,690 Borrowings 558,100 558,100 338,000 338,000 Subordinated debt held by unconsolidated subsidiary trusts 102,140 87,170 102,122 85,189 The following is a further description of the principal valuation methods used by the Company to estimate the fair values of its financial instruments. Loans have been classified as a Level 3 valuation. Fair values for variable rate loans that reprice frequently are based on carrying values. Fair values for fixed rate loans are estimated using discounted cash flows and interest rates currently being offered for loans with similar terms to borrowers of similar credit quality. Deposits have been classified as a Level 2 valuation. The fair value of demand deposits, interest-bearing checking deposits, savings accounts, and money market deposits is the amount payable on demand at the reporting date. The fair value of time deposit obligations are based on current market rates for similar products. Borrowings have been classified as a Level 2 valuation. The fair value of FHLB overnight advances is the amount payable on demand at the reporting date. Fair values for long-term borrowings are estimated using discounted cash flows and interest rates currently being offered on similar borrowings, and are immaterial as of the reporting dates. Subordinated debt held by unconsolidated subsidiary trusts have been classified as a Level 2 valuation. The fair value of subordinated debt held by unconsolidated subsidiary trusts are estimated using discounted cash flows and interest rates currently being offered on similar securities. Other financial assets and liabilities – Cash and cash equivalents have been classified as a Level 1 valuation, while accrued interest receivable and accrued interest payable have been classified as a Level 2 valuation. The fair values of each approximate the respective carrying values because the instruments are payable on demand or have short-term maturities and present relatively low credit risk and interest rate risk.

DERIVATIVE INSTRUMENTS

DERIVATIVE INSTRUMENTS	9 Months Ended
	Sep. 30, 2015
DERIVATIVE INSTRUMENTS [Abstract]
DERIVATIVE INSTRUMENTS	NOTE L: DERIVATIVE INSTRUMENTS The Company is party to derivative financial instruments in the normal course of its business to meet the financing needs of its customers and to manage its own exposure to fluctuations in interest rates. These financial instruments have been limited to commitments to originate real estate loans held for sale and forward sales commitments. The Company does not hold or issue derivative financial instruments for trading or other speculative purposes. The Company enters into forward sales commitments for the future delivery of residential mortgage loans, and interest rate lock commitments to fund loans at a specified interest rate. The forward sales commitments are utilized to reduce interest rate risk associated with interest rate lock commitments and loans held for sale. Changes in the estimated fair value of the forward sales commitments and interest rate lock commitments subsequent to inception are based on changes in the fair value of the underlying loan resulting from the fulfillment of the commitment and changes in the probability that the loan will fund within the terms of the commitment, which is affected primarily by changes in interest rates and the passage of time. At inception and during the life of the interest rate lock commitment, the Company includes the expected net future cash flows related to the associated servicing of the loan as part of the fair value measurement of the interest rate lock commitments. These derivatives are recorded at fair value, which were immaterial at September 30, 2015. The effect of the changes to these derivatives for the three and nine months then ended was also immaterial.

SEGMENT INFORMATION

SEGMENT INFORMATION	9 Months Ended
	Sep. 30, 2015
SEGMENT INFORMATION [Abstract]
SEGMENT INFORMATION	NOTE M: SEGMENT INFORMATION Operating segments are components of an enterprise, which are evaluated regularly by the “chief operating decision maker” in deciding how to allocate resources and assess performance. The Company’s chief operating decision maker is the President and Chief Executive Officer of the Company. The Company has identified Banking, Employee Benefit Services and Wealth Management as its reportable operating business segments. The Bank operates the banking segment that provides full-service banking to consumers, businesses and governmental units in northern, central and western New York as well as northern Pennsylvania. The employee benefit services segment, which includes Benefit Plans Administrative Services, Inc. (“BPAS”) and its subsidiaries, with offices throughout the U.S. and Puerto Rico, provides employee benefit trust, collective investment fund, retirement plan administration, actuarial, VEBA/HRA and health and welfare consulting services. The wealth management services segment includes trust services provided by the personal trust unit within the Bank, investment and insurance products and services provided by the Bank’s subsidiaries Community Investment Services, Inc. (“CISI”) and CBNA Insurance Agency, Inc., and asset management services provided by the Bank’s Nottingham Advisors, Inc. subsidiary. The accounting policies used in the disclosure of business segments are the same as those described in the summary of significant accounting policies (See Note A, Summary of Significant Accounting Policies Information about reportable segments and reconciliation of the information to the consolidated financial statements follows: (000's omitted) Banking Employee Benefit Services Wealth Management Eliminations Consolidated Total Three Months Ended September 30, 2015 Net interest income $ 62,295 $ 37 $ 31 $ 0 $ 62,363 Provision for loan losses 1,906 0 0 0 1,906 Noninterest revenues 15,503 11,674 4,735 (526 ) 31,386 Amortization of intangible assets 680 125 38 0 843 Other operating expenses 43,790 8,644 3,328 (526 ) 55,236 Income before income taxes $ 31,422 $ 2,942 $ 1,400 $ 0 $ 35,764 Assets $ 7,970,345 $ 30,958 $ 18,921 $ (23,058 ) $ 7,997,166 Goodwill $ 364,495 $ 8,019 $ 2,660 $ 0 $ 375,174 Three Months Ended September 30, 2014 Net interest income $ 61,350 $ 21 $ 23 $ 0 $ 61,394 Provision for loan losses 1,747 0 0 0 1,747 Noninterest revenues 15,700 11,049 4,809 (486 ) 31,072 Amortization of intangible assets 850 153 48 0 1,051 Other operating expenses 46,837 8,140 3,269 (486 ) 57,760 Income before income taxes $ 27,616 $ 2,777 $ 1,515 $ 0 $ 31,908 Assets $ 7,476,030 $ 29,605 $ 14,965 $ (17,957 ) $ 7,502,643 Goodwill $ 364,495 $ 8,019 $ 2,660 $ 0 $ 375,174 Nine Months Ended September 30, 2015 Net interest income $ 183,243 $ 102 $ 86 $ 0 $ 183,431 Provision for loan losses 3,120 0 0 0 3,120 Noninterest revenues 43,037 34,633 13,943 (1,462 ) 90,151 Amortization of intangible assets 2,129 391 122 0 2,642 Other operating expenses 131,002 26,052 9,841 (1,462 ) 165,433 Income before income taxes $ 90,029 $ 8,292 $ 4,066 $ 0 $ 102,387 Nine Months Ended September 30, 2014 Net interest income $ 182,537 $ 67 $ 68 $ 0 $ 182,672 Provision for loan losses 4,647 0 0 0 4,647 Noninterest revenues 43,922 32,434 14,101 (1,365 ) 89,092 Amortization of intangible assets 2,644 496 153 0 3,293 Other operating expenses 133,680 24,622 9,666 (1,365 ) 166,603 Income before income taxes $ 85,488 $ 7,383 $ 4,350 $ 0 $ 97,221

ACCOUNTING POLICIES (Policies)

ACCOUNTING POLICIES (Policies)	9 Months Ended
	Sep. 30, 2015
ACCOUNTING POLICIES [Abstract]
Acquired Loans	Acquired Loans Acquired loans are initially recorded at their acquisition date fair values. The carryover of allowance for loan losses is prohibited as any credit losses in the loans are included in the determination of the fair value of the loans at the acquisition date. Fair values for acquired loans are based on a discounted cash flow methodology that involves assumptions and judgments as to credit risk, prepayment risk, liquidity risk, default rates, loss severity, payment speeds, collateral values and discount rate. Acquired Impaired Loans Acquired loans 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 are accounted for as impaired loans under Accounting Standards Codification (“ASC”) 310-30. The excess of undiscounted cash flows expected at acquisition over the estimated fair value is referred to as the accretable discount and is recognized into interest income over the remaining life of the loans using the interest method. The difference between contractually required payments at acquisition and the undiscounted cash flows expected to be collected at acquisition is referred to as the non-accretable discount. The non-accretable discount represents estimated future credit losses and other contractually required payments that the Company does not expect to collect. Subsequent decreases in expected cash flows are recognized as impairments through a charge to the provision for credit losses resulting in an increase in the allowance for loan losses. Subsequent improvements in expected cash flows result in a recovery of previously recorded allowance for loan losses or a reversal of a corresponding amount of the non-accretable discount, which the Company then reclassifies as an accretable discount that is recognized into interest income over the remaining life of the loans using the interest method. Acquired loans that met the criteria for non-accrual of interest prior to acquisition may be considered performing upon acquisition, regardless of whether the customer is contractually delinquent, if the Company can reasonably estimate the timing and amount of the expected cash flows on such loans and if the Company expects to fully collect the new carrying value of the loans. As such, the Company may no longer consider the loan to be non-accrual or non-performing and may accrue interest on these loans, including the impact of any accretable discount. Acquired Non-impaired Loans Acquired loans that do not meet the requirements under ASC 310-30 are considered acquired non-impaired loans. The difference between the acquisition date fair value and the outstanding balance represents the fair value adjustment for a loan and includes both credit and interest rate considerations. Fair value adjustments may be discounts (or premiums) to a loan’s cost basis and are accreted (or amortized) to net interest income (or expense) over the loan’s remaining life in accordance with ASC 310-20. Fair value adjustments for revolving loans are accreted (or amortized) using a straight line method. Term loans are accreted (or amortized) using the constant effective yield method. Subsequent to the purchase date, the methods used to estimate the allowance for loan losses for the acquired non-impaired loans are consistent with the policy described below. However, the Company compares the net realizable value of the loans to the carrying value, for loans collectively evaluated for impairment. The carrying value represents the net of the loan’s unpaid principal balance and the remaining purchase discount (or premium) that has yet to be accreted into interest income. When the carrying value exceeds the net realizable value, an allowance for loan losses is recognized.
Allowance for Loan Losses	Allowance for Loan Losses Management continually evaluates the credit quality of the Company’s loan portfolio, and performs a formal review of the adequacy of the allowance for loan losses on a quarterly basis. The allowance reflects management’s best estimate of probable losses inherent in the loan portfolio. Determination of the allowance is subjective in nature and requires significant estimates. The Company’s allowance methodology consists of two broad components - general and specific loan loss allocations. The general loan loss allocation is composed of two calculations that are computed on five main loan segments: business lending; consumer direct; consumer indirect; home equity; and consumer mortgage. The first calculation is quantitative and determines an allowance level based on the latest 36 months of historical net charge-off data for each loan class (commercial loans exclude balances with specific loan loss allocations). The second calculation is qualitative and takes into consideration eight qualitative environmental factors: levels and trends in delinquencies and impaired loans; levels of and trends in charge-offs and recoveries; trends in volume and terms of loans; effects of any changes in risk selection and underwriting standards, and other changes in lending policies, procedures, and practices; experience, ability, and depth of lending management and other relevant staff; national and local economic trends and conditions; industry conditions; and effects of changes in credit concentrations. A component of the qualitative calculation is the unallocated allowance for loan loss. The qualitative and quantitative calculations are added together to determine the general loan loss allocation. The specific loan loss allocation relates to individual commercial loans that are both greater than $0.5 million and in a nonaccruing status with respect to interest. Specific loan losses are based on discounted estimated cash flows, including any cash flows resulting from the conversion of collateral or collateral shortfalls. The allowance levels computed from the specific and general loan loss allocation methods are combined with unallocated allowances and allowances needed for acquired loans to derive the total required allowance for loan losses to be reflected on the Consolidated Statement of Condition. Loan losses are charged off against the allowance, while recoveries of amounts previously charged off are credited to the allowance. A provision for loan losses is charged to operations based on management’s periodic evaluation of factors previously mentioned.
Investment Securities	Investment Securities The Company has classified its investments in debt and equity securities as either held-to-maturity or available-for-sale. Held-to-maturity securities are those for which the Company has the positive intent and ability to hold until maturity, and are reported at cost, which is adjusted for amortization of premiums and accretion of discounts. Securities classified as available-for-sale are reported at fair value with net unrealized gains and losses reflected as a separate component of shareholders' equity, net of applicable income taxes. None of the Company's investment securities have been classified as trading securities at September 30, 2015. Certain equity securities are stated at cost and include restricted stock of the Federal Reserve Bank of New York (“Federal Reserve”) and Federal Home Loan Bank of New York (“FHLB”). Fair values for investment securities are based upon quoted market prices, where available. If quoted market prices are not available, fair values are based upon quoted market prices of comparable instruments, or a discounted cash flow model using market estimates of interest rates and volatility. The Company conducts an assessment of all securities in an unrealized loss An OTTI loss must be recognized for a debt security in an unrealized loss position if there is intent to sell the security or it is more likely than not the Company will be required to sell the security prior to recovery of its amortized cost basis. In this situation, the amount of loss recognized in income is equal to the difference between the fair value and the amortized cost basis of the security. Even if management does not have the intent, and it is not more likely than not that the Company will be required to sell the securities, an evaluation of the expected cash flows to be received is performed to determine if a credit loss has occurred. For debt securities, a critical component of the evaluation for OTTI is the identification of credit-impaired securities, where the Company does not expect to receive cash flows sufficient to recover the entire amortized cost basis of the security. In the event of a credit loss, only the amount of impairment associated with the credit loss would be recognized in income. The portion of the unrealized loss relating to other factors, such as liquidity conditions in the market or changes in market interest rates, is recorded in accumulated other comprehensive loss. Equity securities are also evaluated to determine whether the unrealized loss is expected to be recoverable based on whether evidence exists to support a realizable value equal to or greater than the amortized cost basis. If it is probable that the amortized cost basis will not be recovered, taking into consideration the estimated recovery period and the ability to hold the equity security until recovery, OTTI is recognized in earnings equal to the difference between the fair value and the amortized cost basis of the security. The specific identification method is used in determining the realized gains and losses on sales of investment securities and OTTI charges. Premiums and discounts on securities are amortized and accreted, respectively, on the interest method basis over the period to maturity or estimated life of the related security. Purchases and sales of securities are recognized on a trade date basis.
Intangible Assets	Intangible Assets Intangible assets include core deposit intangibles, customer relationship intangibles and goodwill arising from acquisitions. Core deposit intangibles and customer relationship intangibles are amortized on either an accelerated or straight-line basis over periods ranging from seven to 20 years. The initial and ongoing carrying value of goodwill and other intangible assets is based upon discounted cash flow modeling techniques that require management to make estimates regarding the amount and timing of expected future cash flows. It also requires use of a discount rate that reflects the current return requirements of the market in relation to present risk-free interest rates, required equity market premiums, peer volatility indicators, and company-specific risk indicators. The Company evaluates goodwill for impairment on an annual basis, or more often if events or circumstances indicate there may be impairment. The implied fair value of a reporting unit’s goodwill is compared to its carrying amount and the impairment loss is measured by the excess of the carrying value over fair value. The fair value of each reporting unit is compared to the carrying amount of that reporting unit in order to determine if impairment is indicated.
Retirement Benefits	Retirement Benefits The Company provides defined benefit pension benefits to eligible employees and post-retirement health and life insurance benefits to certain eligible retirees. The Company also provides deferred compensation and supplemental executive retirement plans for selected current and former employees, officers, and directors. Expense under these plans is charged to current operations and consists of several components of net periodic benefit cost based on various actuarial assumptions regarding future experience under the plans, including discount rate, rate of future compensation increases, and expected return on plan assets.
New Accounting Pronouncements	New Accounting Pronouncements In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606) In May 2014, the FASB issued ASU No. 2015-16, Business Combinations: Simplifying the Accounting for Measurement-Period Adjustments (Topic 805)

ACQUISITIONS (Tables)

ACQUISITIONS (Tables)	9 Months Ended
	Sep. 30, 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 during 2014: (000’s omitted) Consideration paid: Cash/Total net consideration paid $ 924 Recognized amounts of identifiable assets acquired and liabilities assumed: Other assets 163 Other intangibles 578 Total identifiable assets 741 Goodwill $ 183

INVESTMENT SECURITIES (Tables)

INVESTMENT SECURITIES (Tables)	9 Months Ended
	Sep. 30, 2015
INVESTMENT SECURITIES [Abstract]
Amortized Cost and Estimated Fair Value of Investment Securities	The amortized cost and estimated fair value of investment securities as of September 30, 2015 and December 31, 2014 are as follows: September 30, 2015 December 31, 2014 (000's omitted) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Available-for-Sale Portfolio: U.S. Treasury and agency securities $ 1,864,199 $ 69,071 $ 0 $ 1,933,270 $ 1,479,134 $ 39,509 $ 910 $ 1,517,733 Obligations of state and political subdivisions 662,774 24,374 521 686,627 645,398 26,749 244 671,903 Government agency mortgage-backed securities 208,817 8,087 968 215,936 228,971 9,782 1,025 237,728 Corporate debt securities 16,705 115 38 16,782 26,803 363 75 27,091 Government agency collateralized mortgage obligations 13,836 582 0 14,418 17,330 695 0 18,025 Marketable equity securities 250 167 11 406 250 195 0 445 Total available-for-sale portfolio $ 2,766,581 $ 102,396 $ 1,538 $ 2,867,439 $ 2,397,886 $ 77,293 $ 2,254 $ 2,472,925 Other Securities: Federal Home Loan Bank common stock $ 29,500 $ 29,500 $ 19,553 $ 19,553 Federal Reserve Bank common stock 16,050 16,050 16,050 16,050 Other equity securities 4,274 4,274 4,446 4,446 Total other securities $ 49,824 $ 49,824 $ 40,049 $ 40,049
Summary of Investment Securities That Have Been in a Continuous Unrealized Loss Position for Less Than or Greater Than Twelve Months	A summary of investment securities that have been in a continuous unrealized loss position is as follows: As of September 30, 2015 Less than 12 Months 12 Months or Longer Total (000's omitted) # Fair Value Gross Unrealized Losses # Fair Value Gross Unrealized Losses # Fair Value Gross Unrealized Losses Available-for-Sale Portfolio: Obligations of state and political subdivisions 70 $ 38,526 $ 473 3 $ 1,198 $ 48 73 $ 39,724 $ 521 Government agency mortgage-backed securities 5 7,342 37 19 31,333 931 24 38,675 968 Corporate debt securities 0 0 0 1 2,745 38 1 2,745 38 Government agency collateralized mortgage obligations 0 0 0 2 4 0 2 4 0 Marketable equity securities 1 90 11 0 0 0 1 90 11 Total available-for-sale/investment portfolio 76 $ 45,958 $ 521 25 $ 35,280 $ 1,017 101 $ 81,238 $ 1,538 As of December 31, 2014 Less than 12 Months 12 Months or Longer Total (000's omitted) # Fair Value Gross Unrealized # Fair Value Gross Unrealized Losses # Fair Value Gross Unrealized Losses Available-for-Sale Portfolio: U.S. Treasury and agency obligations 0 $ 0 $ 0 4 $ 102,363 $ 910 4 $ 102,363 $ 910 Obligations of state and political subdivisions 23 13,413 34 46 26,490 210 69 39,903 244 Government agency mortgage-backed securities 3 5 0 19 34,770 1,025 22 34,775 1,025 Corporate debt securities 1 3,040 1 1 2,755 74 2 5,795 75 Government agency collateralized mortgage obligations 1 0 0 1 5 0 2 5 0 Total available-for-sale/investment portfolio 28 $ 16,458 $ 35 71 $ 166,383 $ 2,219 99 $ 182,841 $ 2,254
Amortized Cost and Estimated Fair Value of Debt Securities by Contractual Maturity	The amortized cost and estimated fair value of debt securities at September 30, 2015, by contractual maturity, are shown below. Expected maturities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. Securities not due at a single maturity date are shown separately. Available-for-Sale (000's omitted) Amortized Cost Fair Value Due in one year or less $ 43,499 $ 43,925 Due after one through five years 157,648 161,758 Due after five years through ten years 2,094,774 2,173,882 Due after ten years 247,757 257,114 Subtotal 2,543,678 2,636,679 Government agency mortgage-backed securities 208,817 215,936 Government agency collateralized mortgage obligations 13,836 14,418 Total $ 2,766,331 $ 2,867,033

LOANS (Tables)

LOANS (Tables)	9 Months Ended
	Sep. 30, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Schedule of Loans Receivable, Net	The balances of these classes are summarized as follows: (000's omitted) September 30, December 31, Consumer mortgage $ 1,621,862 $ 1,613,384 Business lending 1,288,772 1,262,484 Consumer indirect 872,988 833,968 Consumer direct 184,479 184,028 Home equity 345,446 342,342 Gross loans 4,313,547 4,236,206 Allowance for loan losses (45,588 ) (45,341 ) Loans, net of allowance for loan losses $ 4,267,959 $ 4,190,865
Schedule of Accretable Discount Related to Credit Impaired Acquired Loans	The outstanding balance related to credit impaired acquired loans was $5.2 million and $6.1 million at September 30, 2015 and December 31, 2014, respectively. The changes in the accretable discount related to the credit impaired acquired loans are as follows: (000’s omitted) Balance at December 31, 2014 $ 705 Accretion recognized, year-to-date (437 ) Net reclassification to accretable from non-accretable 329 Balance at September 30, 2015 $ 597
Aged Analysis of the Company's Past Due Loans by Class	The following is an aged analysis of the Company’s past due loans, by class as of September 30, 2015: Legacy Loans (000’s omitted) Past Due 30 – 89 Days 90+ Days Past Due and Still Accruing Nonaccrual Total Past Due Current Total Loans Consumer mortgage $ 10,115 $ 1,351 $ 12,108 $ 23,574 $ 1,538,515 $ 1,562,089 Business lending 2,187 135 6,402 8,724 1,159,228 1,167,952 Consumer indirect 9,785 58 0 9,843 862,571 872,414 Consumer direct 1,148 41 1 1,190 179,428 180,618 Home equity 1,023 291 1,993 3,307 289,015 292,322 Total $ 24,258 $ 1,876 $ 20,504 $ 46,638 $ 4,028,757 $ 4,075,395 Acquired Loans (000’s omitted) Past Due 30 – 89 Days 90+ Days Past Due and Nonaccrual Total Acquired (1) Current Total Loans Consumer mortgage $ 1,271 $ 130 $ 1,473 $ 2,874 $ 0 $ 56,899 $ 59,773 Business lending 192 0 710 902 4,675 115,243 120,820 Consumer indirect 25 0 0 25 0 549 574 Consumer direct 126 0 14 140 0 3,721 3,861 Home equity 446 69 432 947 0 52,177 53,124 Total $ 2,060 $ 199 $ 2,629 $ 4,888 $ 4,675 $ 228,589 $ 238,152 (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 cashflows, is being recognized on all acquired impaired loans. The following is an aged analysis of the Company’s past due loans by class as of December 31, 2014: Legacy Loans (000’s omitted) Past Due 90+ Days Past Nonaccrual Total Current Total Loans Consumer mortgage $ 13,978 $ 2,165 $ 13,201 $ 29,344 $ 1,515,057 $ 1,544,401 Business lending 6,738 350 2,291 9,379 1,115,215 1,124,594 Consumer indirect 10,529 82 10 10,621 822,124 832,745 Consumer direct 1,389 36 2 1,427 177,158 178,585 Home equity 1,802 195 2,172 4,169 278,904 283,073 Total $ 34,436 $ 2,828 $ 17,676 $ 54,940 $ 3,908,458 $ 3,963,398 Acquired Loans (000’s omitted) Past Due 90+ Days Past Nonaccrual Total Acquired (1) Current Total Loans Consumer mortgage $ 1,892 $ 232 $ 2,122 $ 4,246 $ 0 $ 64,737 $ 68,983 Business lending 608 0 489 1,097 5,312 131,481 137,890 Consumer indirect 40 0 0 40 0 1,183 1,223 Consumer direct 174 0 18 192 0 5,251 5,443 Home equity 674 46 426 1,146 0 58,123 59,269 Total $ 3,388 $ 278 $ 3,055 $ 6,721 $ 5,312 $ 260,775 $ 272,808 (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 cashflows, is being recognized on all acquired impaired loans.
Summary of Non-business Impaired Loans	All loan classes are collectively evaluated for impairment except business lending, as described in Note C. A summary of individually evaluated impaired loans as of September 30, 2015 and December 31, 2014 follows: (000’s omitted) September 30, 2015 December 31, 2014 Loans with allowance allocation $ 2,800 $ 0 Loans without allowance allocation 1,086 0 Carrying balance 3,886 0 Contractual balance 3,986 0 Specifically allocated allowance 566 0
Troubled Debt Restructurings on Financing Receivables	Information regarding TDRs as of September 30, 2015 and December 31, 2014 is as follows: September 30, 2015 December 31, 2014 (000’s omitted) Nonaccrual Accruing Total Nonaccrual Accruing Total # Amount # Amount # Amount # Amount # Amount # Amount Consumer mortgage 41 $ 1,500 38 $ 1,595 79 $ 3,095 49 $ 2,092 37 $ 1,770 86 $ 3,862 Business lending 3 117 4 567 7 684 6 442 3 468 9 910 Consumer indirect 0 0 74 700 74 700 0 0 79 615 79 615 Consumer direct 0 0 16 35 16 35 0 0 25 69 25 69 Home equity 7 101 12 258 19 359 13 218 13 278 26 496 Total 51 $ 1,718 144 $ 3,155 195 $ 4,873 68 $ 2,752 157 $ 3,200 225 $ 5,952 The following table presents information related to loans modified in a TDR during the three and nine months ended September 30, 2015 and 2014. Of the loans noted in the table below, all loans for the three and nine months ended September 30, 2015 and 2014 were modified due to a Chapter 7 bankruptcy as described previously. The financial effects of these restructurings were immaterial. Three Months Ended September 30, 2015 Three Months Ended September 30, 2014 (000’s omitted) Number of loans modified Outstanding Balance Number of loans modified Outstanding Balance Consumer mortgage 4 $ 404 6 $ 283 Business lending 0 0 0 0 Consumer indirect 12 112 16 165 Consumer direct 1 0 5 7 Home equity 0 0 0 0 Total 17 $ 516 27 $ 455 Nine Months Ended September 30, 2015 Nine Months Ended September 30, 2014 (000’s omitted) Number of loans modified Outstanding Balance Number of loans modified Outstanding Balance Consumer mortgage 8 $ 585 22 $ 1,016 Business lending 0 0 7 556 Consumer indirect 23 263 29 334 Consumer direct 2 1 7 14 Home equity 1 13 5 173 Total 34 $ 862 70 $ 2,093
Schedule of Allowance for Loan Losses by Class	The allowance for loan losses is general in nature and is available to absorb losses from any loan type despite the analysis below. The following presents by class the activity in the allowance for loan losses: Three Months Ended (000’s omitted) Consumer Mortgage Business Lending Consumer Indirect Consumer Direct Home Equity Unallocated Acquired Impaired Total Beginning balance $ 10,192 $ 15,353 $ 11,602 $ 2,991 $ 2,677 $ 2,374 $ 93 $ 45,282 Charge-offs (276 ) (234 ) (1,597 ) (427 ) (66 ) 0 (59 ) (2,659 ) Recoveries 9 107 740 174 29 0 0 1,059 Provision 421 112 1,367 359 102 (461 ) 6 1,906 Ending balance $ 10,346 $ 15,338 $ 12,112 $ 3,097 $ 2,742 $ 1,913 $ 40 $ 45,588 Three Months Ended (000’s omitted) Consumer Mortgage Business Lending Consumer Consumer Home Unallocated Acquired Total Beginning balance $ 9,375 $ 16,553 $ 11,354 $ 3,298 $ 1,860 $ 2,012 $ 163 $ 44,615 Charge-offs (203 ) (435 ) (1,711 ) (307 ) (74 ) 0 (10 ) (2,740 ) Recoveries 14 335 1,025 239 38 0 0 1,651 Provision 268 138 1,231 100 77 (65 ) (2 ) 1,747 Ending balance $ 9,454 $ 16,591 $ 11,899 $ 3,330 $ 1,901 $ 1,947 $ 151 $ 45,273 Nine Months Ended (000’s omitted) Consumer Business Consumer Consumer Home Unallocated Acquired Total Beginning balance $ 10,286 $ 15,787 $ 11,544 $ 3,083 $ 2,701 $ 1,767 $ 173 $ 45,341 Charge-offs (917 ) (667 ) (4,421 ) (1,066 ) (188 ) 0 (102 ) (7,361 ) Recoveries 75 715 3,077 566 55 0 0 4,488 Provision 902 (497 ) 1,912 514 174 146 (31 ) 3,120 Ending balance $ 10,346 $ 15,338 $ 12,112 $ 3,097 $ 2,742 $ 1,913 $ 40 $ 45,588 Nine Months Ended (000’s omitted) Consumer Business Consumer Consumer Home Unallocated Acquired Total Beginning balance $ 8,994 $ 17,507 $ 10,248 $ 3,181 $ 1,830 $ 2,029 $ 530 $ 44,319 Charge-offs (734 ) (940 ) (4,573 ) (1,219 ) (450 ) 0 (30 ) (7,946 ) Recoveries 67 607 2,826 677 76 0 0 4,253 Provision 1,127 (583 ) 3,398 691 445 (82 ) (349 ) 4,647 Ending balance $ 9,454 $ 16,591 $ 11,899 $ 3,330 $ 1,901 $ 1,947 $ 151 $ 45,273
Business Lending [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Schedule of Loans by Credit Quality Indicator	The following table shows the amount of business lending loans by credit quality category: September 30, 2015 December 31, 2014 (000’s omitted) Legacy Acquired Total Legacy Acquired Total Pass $ 990,125 $ 84,944 $ 1,075,069 $ 949,960 $ 93,510 $ 1,043,470 Special mention 111,496 15,343 126,839 103,176 18,038 121,214 Classified 65,831 15,858 81,689 71,458 21,030 92,488 Doubtful 500 0 500 0 0 0 Acquired impaired 0 4,675 4,675 0 5,312 5,312 Total $ 1,167,952 $ 120,820 $ 1,288,772 $ 1,124,594 $ 137,890 $ 1,262,484
All Other Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Schedule of Loans by Credit Quality Indicator	The following table details the balances in all other loan categories at September 30, 2015: Legacy Loans (000’s omitted) Consumer Mortgage Consumer Indirect Consumer Direct Home Equity Total Performing $ 1,548,630 $ 872,356 $ 180,576 $ 290,038 $ 2,891,600 Nonperforming 13,459 58 42 2,284 15,843 Total $ 1,562,089 $ 872,414 $ 180,618 $ 292,322 $ 2,907,443 Acquired Loans (000’s omitted) Consumer Mortgage Consumer Indirect Consumer Direct Home Equity Total Performing $ 58,170 $ 574 $ 3,847 $ 52,623 $ 115,214 Nonperforming 1,603 0 14 501 2,118 Total $ 59,773 $ 574 $ 3,861 $ 53,124 $ 117,332 The following table details the balances in all other loan categories at December 31, 2014: Legacy Loans (000’s omitted) Consumer Mortgage Consumer Indirect Consumer Direct Home Equity Total Performing $ 1,529,035 $ 832,653 $ 178,547 $ 280,706 $ 2,820,941 Nonperforming 15,366 92 38 2,367 17,863 Total $ 1,544,401 $ 832,745 $ 178,585 $ 283,073 $ 2,838,804 Acquired Loans (000’s omitted) Consumer Mortgage Consumer Indirect Consumer Direct Home Equity Total Performing $ 66,629 $ 1,223 $ 5,425 $ 58,797 $ 132,074 Nonperforming 2,354 0 18 472 2,844 Total $ 68,983 $ 1,223 $ 5,443 $ 59,269 $ 134,918

GOODWILL AND IDENTIFIABLE INT27

GOODWILL AND IDENTIFIABLE INTANGIBLE ASSETS (Tables)	9 Months Ended
	Sep. 30, 2015
GOODWILL AND IDENTIFIABLE INTANGIBLE ASSETS [Abstract]
Gross Carrying Amount and Accumulated Amortization of Identifiable Intangible Assets	The gross carrying amount and accumulated amortization for each type of identifiable intangible asset are as follows: September 30, 2015 December 31, 2014 (000's omitted) Gross Accumulated Net Gross Accumulated Net Amortizing intangible assets: Core deposit intangibles $ 40,326 $ (32,432 ) $ 7,894 $ 40,326 $ (30,303 ) $ 10,023 Other intangibles 10,213 (8,756 ) 1,457 10,019 (8,243 ) 1,776 Total amortizing intangibles $ 50,539 $ (41,188 ) $ 9,351 $ 50,345 $ (38,546 ) $ 11,799
Estimated Aggregate Amortization Expense	The estimated aggregate amortization expense for each of the five succeeding fiscal years ended December 31 is as follows: (000's omitted) Oct - Dec 2015 $ 788 2016 2,652 2017 1,943 2018 1,453 2019 1,026 Thereafter 1,489 Total $ 9,351
Components of Goodwill	Shown below are the components of the Company’s goodwill at December 31, 2014 and September 30, 2015: (000’s omitted) December 31, 2014 Activity September 30, 2015 Goodwill $ 379,998 $ 0 $ 379,998 Accumulated impairment (4,824 ) 0 (4,824 ) Goodwill, net $ 375,174 $ 0 $ 375,174

MANDATORILY REDEEMABLE PREFER28

MANDATORILY REDEEMABLE PREFERRED SECURITIES (Tables)	9 Months Ended
	Sep. 30, 2015
MANDATORILY REDEEMABLE PREFERRED SECURITIES [Abstract]
Terms of Preferred Securities for Each Trust	The terms of the preferred securities of each trust are as follows: Trust Issuance Par Interest Rate Date Call Price III 7/31/2001 $24.5 million 3 month LIBOR plus 3.58% (3.88%) 7/31/2031 Par IV 12/8/2006 $75 million 3 month LIBOR plus 1.65% (1.99%) 12/15/2036 Par

BENEFIT PLANS (Tables)

BENEFIT PLANS (Tables)	9 Months Ended
	Sep. 30, 2015
BENEFIT PLANS [Abstract]
Net Periodic Benefit Cost	The net periodic benefit cost for the three and nine months ended September 30, 2015 and 2014 is as follows: Pension Benefits Post-retirement Benefits Three Months Ended Nine Months Ended Three Months Ended Nine Months Ended (000's omitted) 2015 2014 2015 2014 2015 2014 2015 2014 Service cost $ 831 $ 882 $ 2,493 $ 2,647 $ 0 $ 0 $ 0 $ 0 Interest cost 1,375 1,318 4,124 3,953 22 26 65 76 Expected return on plan assets (3,042 ) (2,980 ) (9,127 ) (8,941 ) 0 0 0 0 Amortization of unrecognized net loss 366 (77 ) 1,099 (230 ) (3 ) (2 ) (10 ) (5 ) Amortization of prior service cost 2 1 6 4 (45 ) (45 ) (134 ) (134 ) Net periodic benefit income $ (468 ) $ (856 ) $ (1,405 ) $ (2,567 ) $ (26 ) $ (21 ) $ (79 ) $ (63 )

EARNINGS PER SHARE (Tables)

EARNINGS PER SHARE (Tables)	9 Months Ended
	Sep. 30, 2015
EARNINGS PER SHARE [Abstract]
Reconciliation of Basic to Diluted Earnings per Share	The following is a reconciliation of basic to diluted earnings per share for the three and nine months ended September 30, 2015 Three Months Ended 30, Nine Months Ended 30, (000's omitted, except per share data) 2015 2014 2015 2014 Net income $ 25,022 $ 22,371 $ 71,159 $ 68,220 Income attributable to unvested stock-based compensation awards (129 ) (115 ) (352 ) (337 ) Income available to common shareholders 24,893 22,256 70,807 67,883 Weighted-average common shares outstanding – basic 40,873 40,596 40,741 40,543 Basic earnings per share $ 0.61 $ 0.55 $ 1.74 $ 1.67 Net income $ 25,022 $ 22,371 $ 71,159 $ 68,220 Income attributable to unvested stock-based compensation awards (129 ) (115 ) (352 ) (337 ) Income available to common shareholders 24,893 22,256 70,807 67,883 Weighted-average common shares outstanding – basic 40,873 40,596 40,741 40,543 Assumed exercise of stock options 386 453 400 482 Weighted-average common shares outstanding – diluted 41,259 41,049 41,141 41,025 Diluted earnings per share $ 0.60 $ 0.54 $ 1.72 $ 1.65

COMMITMENTS, CONTINGENT LIABI31

COMMITMENTS, CONTINGENT LIABILITIES AND RESTRICTIONS (Tables)	9 Months Ended
	Sep. 30, 2015
COMMITMENTS, CONTINGENT LIABILITIES AND RESTRICTIONS [Abstract]
Off-Balance-Sheet Financial Instruments Contract Amounts	The contract amounts of commitments and contingencies are as follows: (000's omitted) September 30, 2015 December 31, 2014 Commitments to extend credit $ 730,652 $ 733,827 Standby letters of credit 18,280 23,916 Total $ 748,932 $ 757,743

FAIR VALUE (Tables)

FAIR VALUE (Tables)	9 Months Ended
	Sep. 30, 2015
FAIR VALUE [Abstract]
Summary of Fair Value Measured on a Recurring Basis	The following tables set forth the Company’s financial assets and liabilities that were accounted for at fair value on a recurring basis. There were no transfers between any of the levels for the periods presented. September 30, 2015 (000's omitted) Level 1 Level 2 Level 3 Total Fair Value Available-for-sale investment securities: U.S. Treasury and agency securities $ 1,933,270 $ 0 $ 0 $ 1,933,270 Obligations of state and political subdivisions 0 686,627 0 686,627 Government agency mortgage-backed securities 0 215,936 0 215,936 Corporate debt securities 0 16,782 0 16,782 Government agency collateralized mortgage obligations 0 14,418 0 14,418 Marketable equity securities 406 0 0 406 Total available-for-sale investment securities 1,933,676 933,763 0 2,867,439 Mortgage loans held for sale 0 1,014 0 1,014 Commitments to originate real estate loans for sale 0 0 276 276 Forward sales commitments 0 (94 ) 0 (94 ) Total $ 1,933,676 $ 934,683 $ 276 $ 2,868,635 December 31, 2014 (000's omitted) Level 1 Level 2 Level 3 Total Fair Value Available-for-sale investment securities: U.S. Treasury and agency securities $ 1,496,667 $ 21,066 $ 0 $ 1,517,733 Obligations of state and political subdivisions 0 671,903 0 671,903 Government agency mortgage-backed securities 0 237,728 0 237,728 Corporate debt securities 0 27,091 0 27,091 Government agency collateralized mortgage obligations 0 18,025 0 18,025 Marketable equity securities 445 0 0 445 Total available-for-sale investment securities 1,497,112 975,813 0 2,472,925 Mortgage loans held for sale 0 1,042 0 1,042 Commitments to originate real estate loans for sale 0 0 185 185 Forward sales commitments 0 (43 ) 0 (43 ) Total $ 1,497,112 $ 976,812 $ 185 $ 2,474,109
Changes in Level 3 Assets Measured at Fair Value on a Recurring Basis	The changes in Level 3 assets measured at fair value on a recurring basis are summarized in the following tables: Three Months Ended September 30, Nine Months Ended September 30, 2015 2014 2015 2014 (000's omitted) Commitments to Originate Real Estate Loans for Sale Commitments toOriginate Real Estate Loans for Sale Commitments to Originate Real Estate Loans for Sale Commitments to Originate Real Estate Loans for Sale Beginning balance $ 195 $ 142 $ 185 $ 44 Total losses included in earnings (1) (195 ) (142 ) (532 ) (253 ) Commitments to originate real estate loans held for sale, net 276 170 623 379 Ending balance $ 276 $ 170 $ 276 $ 170 (1) Amounts included in earnings associated with the commitments to originate real estate loans for sale are reported as a component of other banking services in the Consolidated Statement of Income.
Assets and Liabilities Measured on a Non-Recurring Basis	Assets and liabilities measured on a non-recurring basis: September 30, 2015 December 31, 2014 (000's omitted) Level 1 Level 2 Level 3 Total Fair Value Level 1 Level 2 Level 3 Total Fair Value Impaired loans $ 0 $ 0 $ 2,708 $ 2,708 $ 0 $ 0 $ 0 $ 0 Other real estate owned 0 0 2,531 2,531 0 0 1,855 1,855 Mortgage servicing rights 0 0 553 553 0 0 0 0 Total $ 0 $ 0 $ 5,792 $ 5,792 $ 0 $ 0 $ 1,855 $ 1,855
Significant Unobservable Inputs, Fair Value Valuation Techniques	The significant unobservable inputs used in the determination of fair value of assets classified as Level 3 on a recurring or non-recurring basis are as follows: (000's omitted) Fair Value at September 30, 2015 Valuation Technique Significant Unobservable Inputs Significant Unobservable Input Range (Weighted Average) Impaired loans $ 2,708 Fair Value of Collateral Estimated cost of disposal/market adjustment 10.0% - 65.6% (61.5 %) Other real estate owned 2,531 Fair Value of Collateral Estimated cost of disposal/market adjustment 5.4% - 64.7% (23.9 %) Commitments to originate real estate loans for sale 276 Discounted cash flow Embedded servicing value 1 % Mortgage servicing rights 553 Discounted cash flow Weighted average constant prepayment rate 11.4 % Weighted average discount rate 3.62 % Adequate compensation $7/loan The significant unobservable inputs used in the determination of fair value of assets classified as Level 3 on a recurring or non-recurring basis as of December 31, 2014 are as follows: (000's omitted) Fair Value at December 31, 2014 Valuation Technique Significant Unobservable Inputs Significant Unobservable Input Range (Weighted Average) Other real estate owned $ 1,855 Fair value of collateral Estimated cost of disposal/market adjustment 10.0% - 77.5% (30.6 %) Commitments to originate real estate loans for sale 185 Discounted cash flow Embedded servicing value 1 %
Carrying Amounts and Estimated Fair Values of Other Financial Instruments	The carrying amounts and estimated fair values of the Company’s other financial instruments that are not accounted for at fair value at September 30, 2015 and December 31, 2014 are as follows: September 30, 2015 December 31, 2014 (000's omitted) Carrying Fair Carrying Fair Financial assets: Net loans $ 4,267,959 $ 4,317,941 $ 4,190,865 $ 4,251,565 Financial liabilities: Deposits 6,148,110 6,147,341 5,935,264 5,935,690 Borrowings 558,100 558,100 338,000 338,000 Subordinated debt held by unconsolidated subsidiary trusts 102,140 87,170 102,122 85,189

SEGMENT INFORMATION (Tables)

SEGMENT INFORMATION (Tables)	9 Months Ended
	Sep. 30, 2015
SEGMENT INFORMATION [Abstract]
Schedule of Segment Reporting Information by Segment	Information about reportable segments and reconciliation of the information to the consolidated financial statements follows: (000's omitted) Banking Employee Benefit Services Wealth Management Eliminations Consolidated Total Three Months Ended September 30, 2015 Net interest income $ 62,295 $ 37 $ 31 $ 0 $ 62,363 Provision for loan losses 1,906 0 0 0 1,906 Noninterest revenues 15,503 11,674 4,735 (526 ) 31,386 Amortization of intangible assets 680 125 38 0 843 Other operating expenses 43,790 8,644 3,328 (526 ) 55,236 Income before income taxes $ 31,422 $ 2,942 $ 1,400 $ 0 $ 35,764 Assets $ 7,970,345 $ 30,958 $ 18,921 $ (23,058 ) $ 7,997,166 Goodwill $ 364,495 $ 8,019 $ 2,660 $ 0 $ 375,174 Three Months Ended September 30, 2014 Net interest income $ 61,350 $ 21 $ 23 $ 0 $ 61,394 Provision for loan losses 1,747 0 0 0 1,747 Noninterest revenues 15,700 11,049 4,809 (486 ) 31,072 Amortization of intangible assets 850 153 48 0 1,051 Other operating expenses 46,837 8,140 3,269 (486 ) 57,760 Income before income taxes $ 27,616 $ 2,777 $ 1,515 $ 0 $ 31,908 Assets $ 7,476,030 $ 29,605 $ 14,965 $ (17,957 ) $ 7,502,643 Goodwill $ 364,495 $ 8,019 $ 2,660 $ 0 $ 375,174 Nine Months Ended September 30, 2015 Net interest income $ 183,243 $ 102 $ 86 $ 0 $ 183,431 Provision for loan losses 3,120 0 0 0 3,120 Noninterest revenues 43,037 34,633 13,943 (1,462 ) 90,151 Amortization of intangible assets 2,129 391 122 0 2,642 Other operating expenses 131,002 26,052 9,841 (1,462 ) 165,433 Income before income taxes $ 90,029 $ 8,292 $ 4,066 $ 0 $ 102,387 Nine Months Ended September 30, 2014 Net interest income $ 182,537 $ 67 $ 68 $ 0 $ 182,672 Provision for loan losses 4,647 0 0 0 4,647 Noninterest revenues 43,922 32,434 14,101 (1,365 ) 89,092 Amortization of intangible assets 2,644 496 153 0 3,293 Other operating expenses 133,680 24,622 9,666 (1,365 ) 166,603 Income before income taxes $ 85,488 $ 7,383 $ 4,350 $ 0 $ 97,221

ACQUISITIONS (Details)

ACQUISITIONS (Details) $ in Thousands	Feb. 24, 2015USD ($)Branch	Sep. 30, 2015USD ($)	Sep. 30, 2015USD ($)	Sep. 30, 2014USD ($)	Dec. 31, 2014USD ($)
Recognized amounts of identifiable assets acquired and liabilities assumed [Abstract]
Goodwill		$ 375,174	$ 375,174	$ 375,174	$ 375,174
Merger and acquisition integration-related expenses		$ 600	$ 1,300	$ 100
Other Intangibles [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful life of core deposit intangible and other intangible		8 years
EBS-RMSCO, Inc. [Member]
Consideration paid [Abstract]
Cash/Total net consideration paid					924
Recognized amounts of identifiable assets acquired and liabilities assumed [Abstract]
Other assets					163
Other intangibles					578
Total identifiable assets					741
Goodwill					$ 183
Oneida Financial Corp [Member]
Consideration paid [Abstract]
Cash/Total net consideration paid	$ 142,000
Recognized amounts of identifiable assets acquired and liabilities assumed [Abstract]
Number of new branch locations included in acquisition or purchase agreement | Branch	12
Assets acquired	$ 813,000
Loans acquired	397,000
Deposits acquired	$ 708,000

ACCOUNTING POLICIES (Details)

ACCOUNTING POLICIES (Details) $ in Millions	9 Months Ended
	Sep. 30, 2015USD ($)ComponentCalculationSegmentFactor
Allowance for Loan Losses [Abstract]
Number of broad components used in allowance methodology | Component	2
Number of calculations used for general loan loss allocation	2
Number of main loan segments | Segment	5
Period of historical net charge-off data for each loan class used in determining allowance level	36 months
Number of qualitative environmental factors used in qualitative calculation for loan loss allocation | Factor	8
Threshold amount for specific loan losses of individual commercial loans | $	$ 0.5
Core Deposits [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible asset useful life (amortization period)	7 years
Core Deposits [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible asset useful life (amortization period)	20 years
Customer Relationships [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible asset useful life (amortization period)	7 years
Customer Relationships [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible asset useful life (amortization period)	20 years

INVESTMENT SECURITIES (Details)

INVESTMENT SECURITIES (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Available-for-Sale Portfolio [Abstract]
Amortized Cost	$ 2,766,581	$ 2,397,886
Gross Unrealized Gains	102,396	77,293
Gross Unrealized Losses	1,538	2,254
Fair Value	2,867,439	2,472,925
Available For Sale Debt Securities Amortized Cost Basis [Abstract]
Amortized Cost	2,766,331
Fair Value	2,867,033
Other Securities [Abstract]
Amortized Cost	49,824	40,049
Fair Value	49,824	40,049
U.S. Treasury and Agency Obligations [Member]
Available For Sale Debt Securities Amortized Cost Basis [Abstract]
Amortized Cost	1,864,199	1,479,134
Gross Unrealized Gains	69,071	39,509
Gross Unrealized Losses	0	910
Fair Value	1,933,270	1,517,733
Obligations of State and Political Subdivisions [Member]
Available For Sale Debt Securities Amortized Cost Basis [Abstract]
Amortized Cost	662,774	645,398
Gross Unrealized Gains	24,374	26,749
Gross Unrealized Losses	521	244
Fair Value	686,627	671,903
Government Agency Mortgage-Backed Securities [Member]
Available For Sale Debt Securities Amortized Cost Basis [Abstract]
Amortized Cost	208,817	228,971
Gross Unrealized Gains	8,087	9,782
Gross Unrealized Losses	968	1,025
Fair Value	215,936	237,728
Corporate Debt Securities [Member]
Available For Sale Debt Securities Amortized Cost Basis [Abstract]
Amortized Cost	16,705	26,803
Gross Unrealized Gains	115	363
Gross Unrealized Losses	38	75
Fair Value	16,782	27,091
Government Agency Collateralized Mortgage Obligations [Member]
Available For Sale Debt Securities Amortized Cost Basis [Abstract]
Amortized Cost	13,836	17,330
Gross Unrealized Gains	582	695
Gross Unrealized Losses	0	0
Fair Value	14,418	18,025
Marketable Equity Securities [Member]
Available For Sale Equity Securities Amortized Cost Basis [Abstract]
Amortized Cost	250	250
Gross Unrealized Gains	167	195
Gross Unrealized Losses	11	0
Fair Value	406	445
Federal Home Loan Bank Common Stock [Member]
Other Securities [Abstract]
Amortized Cost	29,500	19,553
Fair Value	29,500	19,553
Federal Reserve Bank Common Stock [Member]
Other Securities [Abstract]
Amortized Cost	16,050	16,050
Fair Value	16,050	16,050
Other Equity Securities [Member]
Other Securities [Abstract]
Amortized Cost	4,274	4,446
Fair Value	$ 4,274	$ 4,446

INVESTMENT SECURITIES, Investme

INVESTMENT SECURITIES, Investment Securities in a Continuous Unrealized Loss Position (Details) $ in Thousands	Sep. 30, 2015USD ($)Position	Dec. 31, 2014USD ($)Position
Available-for-Sale Portfolio in Unrealized Loss Positions, Number of Positions [Abstract]
Less than 12 months | Position	76	28
12 months or longer | Position	25	71
Total | Position	101	99
Available-for-Sale Portfolio in Unrealized Loss Positions, Fair Value [Abstract]
Less than 12 months	$ 45,958	$ 16,458
12 months or longer	35,280	166,383
Total	81,238	182,841
Available-for-Sale Portfolio, Debt Maturities, Gross Unrealized Losses [Abstract]
Less than 12 months	521	35
12 months or longer	1,017	2,219
Total	$ 1,538	$ 2,254
U.S. Treasury and Agency Obligations [Member]
Available-for-Sale Portfolio in Unrealized Loss Positions, Number of Positions [Abstract]
Less than 12 months | Position		0
12 months or longer | Position		4
Total | Position		4
Available-for-Sale Portfolio in Unrealized Loss Positions, Fair Value [Abstract]
Less than 12 months		$ 0
12 months or longer		102,363
Total		102,363
Available-for-Sale Portfolio, Debt Maturities, Gross Unrealized Losses [Abstract]
Less than 12 months		0
12 months or longer		910
Total		$ 910
Obligations of State and Political Subdivisions [Member]
Available-for-Sale Portfolio in Unrealized Loss Positions, Number of Positions [Abstract]
Less than 12 months | Position	70	23
12 months or longer | Position	3	46
Total | Position	73	69
Available-for-Sale Portfolio in Unrealized Loss Positions, Fair Value [Abstract]
Less than 12 months	$ 38,526	$ 13,413
12 months or longer	1,198	26,490
Total	39,724	39,903
Available-for-Sale Portfolio, Debt Maturities, Gross Unrealized Losses [Abstract]
Less than 12 months	473	34
12 months or longer	48	210
Total	$ 521	$ 244
Government Agency Mortgage-Backed Securities [Member]
Available-for-Sale Portfolio in Unrealized Loss Positions, Number of Positions [Abstract]
Less than 12 months | Position	5	3
12 months or longer | Position	19	19
Total | Position	24	22
Available-for-Sale Portfolio in Unrealized Loss Positions, Fair Value [Abstract]
Less than 12 months	$ 7,342	$ 5
12 months or longer	31,333	34,770
Total	38,675	34,775
Available-for-Sale Portfolio, Debt Maturities, Gross Unrealized Losses [Abstract]
Less than 12 months	37	0
12 months or longer	931	1,025
Total	$ 968	$ 1,025
Corporate Debt Securities [Member]
Available-for-Sale Portfolio in Unrealized Loss Positions, Number of Positions [Abstract]
Less than 12 months | Position	0	1
12 months or longer | Position	1	1
Total | Position	1	2
Available-for-Sale Portfolio in Unrealized Loss Positions, Fair Value [Abstract]
Less than 12 months	$ 0	$ 3,040
12 months or longer	2,745	2,755
Total	2,745	5,795
Available-for-Sale Portfolio, Debt Maturities, Gross Unrealized Losses [Abstract]
Less than 12 months	0	1
12 months or longer	38	74
Total	$ 38	$ 75
Government Agency Collateralized Mortgage Obligations [Member]
Available-for-Sale Portfolio in Unrealized Loss Positions, Number of Positions [Abstract]
Less than 12 months | Position	0	1
12 months or longer | Position	2	1
Total | Position	2	2
Available-for-Sale Portfolio in Unrealized Loss Positions, Fair Value [Abstract]
Less than 12 months	$ 0	$ 0
12 months or longer	4	5
Total	4	5
Available-for-Sale Portfolio, Debt Maturities, Gross Unrealized Losses [Abstract]
Less than 12 months	0	0
12 months or longer	0	0
Total	$ 0	$ 0
Marketable Equity Securities [Member]
Available-for-Sale Portfolio in Unrealized Loss Positions, Number of Positions [Abstract]
Less than 12 months | Position	1
12 months or longer | Position	0
Total | Position	1
Available-for-Sale Portfolio in Unrealized Loss Positions, Fair Value [Abstract]
Less than 12 months	$ 90
12 months or longer	0
Total	90
Available-for-Sale Portfolio, Debt Maturities, Gross Unrealized Losses [Abstract]
Less than 12 months	11
12 months or longer	0
Total	$ 11

INVESTMENT SECURITIES, Amortize

INVESTMENT SECURITIES, Amortized Cost and Estimated Fair Value of Debt Securities by Contractual Maturity (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Available-for-Sale, Debt Maturities, Amortized Cost [Abstract]
Due in one year or less	$ 43,499
Due in one to five years	157,648
Due in five through ten years	2,094,774
Due after ten years	247,757
Subtotal	2,543,678
Amortized Cost	2,766,331
Available-for-Sale, Debt Maturities, Fair Value [Abstract]
Due in one year or less	43,925
Due in one to five years	161,758
Due in five through ten years	2,173,882
Due after ten years	257,114
Subtotal	2,636,679
Fair value	2,867,033
Government Agency Mortgage-Backed Securities [Member]
Available-for-Sale, Debt Maturities, Amortized Cost [Abstract]
Without single maturity date	208,817
Amortized Cost	208,817	$ 228,971
Available-for-Sale, Debt Maturities, Fair Value [Abstract]
Without single maturity date	215,936
Fair value	215,936	237,728
Government Agency Collateralized Mortgage Obligations [Member]
Available-for-Sale, Debt Maturities, Amortized Cost [Abstract]
Without single maturity date	13,836
Amortized Cost	13,836	17,330
Available-for-Sale, Debt Maturities, Fair Value [Abstract]
Without single maturity date	14,418
Fair value	$ 14,418	$ 18,025

LOANS, Loan Summary (Details)

LOANS, Loan Summary (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2015	Jun. 30, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Dec. 31, 2013
Loans receivable, net [Abstract]
Gross loans	$ 4,313,547	$ 4,313,547		$ 4,236,206
Allowance for loan losses	(45,588)	(45,588)	$ (45,282)	(45,341)	$ (45,273)	$ (44,615)	$ (44,319)
Net loans	4,267,959	4,267,959		4,190,865
Credit impaired acquired loans, outstanding balance	5,200	5,200		6,100
Accretable discount related to credit impaired acquired loans [Roll forward]
Beginning Balance		705
Accretion recognized, year-to-date		(437)
Net reclassification to accretable from non-accretable		329
Ending Balance	$ 597	597
Consumer Mortgage [Member] | Minimum [Member]
Loans receivable, net [Abstract]
Typical contract term	10 years
Consumer Mortgage [Member] | Maximum [Member]
Loans receivable, net [Abstract]
Typical contract term	30 years
Business Lending [Member]
Loans receivable, net [Abstract]
Gross loans	$ 1,288,772	1,288,772		1,262,484
Home Equity [Member] | Maximum [Member]
Loans receivable, net [Abstract]
Typical contract term	30 years
Residential Portfolio Segment [Member] | Consumer Mortgage [Member]
Loans receivable, net [Abstract]
Gross loans	$ 1,621,862	1,621,862		1,613,384
Allowance for loan losses	(10,346)	(10,346)	(10,192)	(10,286)	(9,454)	(9,375)	(8,994)
Commercial Portfolio Segment [Member] | Business Lending [Member]
Loans receivable, net [Abstract]
Gross loans	1,288,772	1,288,772		1,262,484
Allowance for loan losses	(15,338)	(15,338)	(15,353)	(15,787)	(16,591)	(16,553)	(17,507)
Consumer Portfolio Segment [Member] | Consumer Indirect [Member]
Loans receivable, net [Abstract]
Gross loans	872,988	872,988		833,968
Allowance for loan losses	(12,112)	(12,112)	(11,602)	(11,544)	(11,899)	(11,354)	(10,248)
Consumer Portfolio Segment [Member] | Consumer Direct [Member]
Loans receivable, net [Abstract]
Gross loans	184,479	184,479		184,028
Allowance for loan losses	(3,097)	(3,097)	(2,991)	(3,083)	(3,330)	(3,298)	(3,181)
Consumer Portfolio Segment [Member] | Home Equity [Member]
Loans receivable, net [Abstract]
Gross loans	345,446	345,446		342,342
Allowance for loan losses	$ (2,742)	$ (2,742)	$ (2,677)	$ (2,701)	$ (1,901)	$ (1,860)	$ (1,830)

LOANS, Credit Quality By Past D

LOANS, Credit Quality By Past Due Status (Details) - USD ($) $ in Thousands		Sep. 30, 2015	Dec. 31, 2014
Aged analysis of the company's loans [Abstract]
Total Loans		$ 4,313,547	$ 4,236,206
Legacy Loans [Member]
Aged analysis of the company's loans [Abstract]
Nonaccrual		20,504	17,676
Total Past Due		46,638	54,940
Current		4,028,757	3,908,458
Total Loans		4,075,395	3,963,398
Legacy Loans [Member] | Past Due 30 - 89 Days [Member]
Aged analysis of the company's loans [Abstract]
Total Past Due		24,258	34,436
Legacy Loans [Member] | 90+ Days Past Due [Member]
Aged analysis of the company's loans [Abstract]
90 + Days Past Due and Still Accruing		1,876	2,828
Acquired Loans [Member]
Aged analysis of the company's loans [Abstract]
Nonaccrual		2,629	3,055
Total Past Due		4,888	6,721
Current		228,589	260,775
Acquired Impaired	[1]	4,675	5,312
Total Loans		238,152	272,808
Acquired Loans [Member] | Past Due 30 - 89 Days [Member]
Aged analysis of the company's loans [Abstract]
Total Past Due		2,060	3,388
Acquired Loans [Member] | 90+ Days Past Due [Member]
Aged analysis of the company's loans [Abstract]
90 + Days Past Due and Still Accruing		199	278
Consumer Mortgage [Member] | Legacy Loans [Member]
Aged analysis of the company's loans [Abstract]
Total Loans		1,562,089	1,544,401
Consumer Mortgage [Member] | Acquired Loans [Member]
Aged analysis of the company's loans [Abstract]
Total Loans		59,773	68,983
Business Lending [Member]
Aged analysis of the company's loans [Abstract]
Total Loans		1,288,772	1,262,484
Business Lending [Member] | Legacy Loans [Member]
Aged analysis of the company's loans [Abstract]
Total Loans		1,167,952	1,124,594
Business Lending [Member] | Acquired Loans [Member]
Aged analysis of the company's loans [Abstract]
Total Loans		120,820	137,890
Consumer Indirect [Member] | Legacy Loans [Member]
Aged analysis of the company's loans [Abstract]
Total Loans		872,414	832,745
Consumer Indirect [Member] | Acquired Loans [Member]
Aged analysis of the company's loans [Abstract]
Total Loans		574	1,223
Consumer Direct [Member] | Legacy Loans [Member]
Aged analysis of the company's loans [Abstract]
Total Loans		180,618	178,585
Consumer Direct [Member] | Acquired Loans [Member]
Aged analysis of the company's loans [Abstract]
Total Loans		3,861	5,443
Home Equity [Member] | Legacy Loans [Member]
Aged analysis of the company's loans [Abstract]
Total Loans		292,322	283,073
Home Equity [Member] | Acquired Loans [Member]
Aged analysis of the company's loans [Abstract]
Total Loans		53,124	59,269
Residential Portfolio Segment [Member] | Consumer Mortgage [Member]
Aged analysis of the company's loans [Abstract]
Total Loans		1,621,862	1,613,384
Residential Portfolio Segment [Member] | Consumer Mortgage [Member] | Legacy Loans [Member]
Aged analysis of the company's loans [Abstract]
Nonaccrual		12,108	13,201
Total Past Due		23,574	29,344
Current		1,538,515	1,515,057
Total Loans		1,562,089	1,544,401
Residential Portfolio Segment [Member] | Consumer Mortgage [Member] | Legacy Loans [Member] | Past Due 30 - 89 Days [Member]
Aged analysis of the company's loans [Abstract]
Total Past Due		10,115	13,978
Residential Portfolio Segment [Member] | Consumer Mortgage [Member] | Legacy Loans [Member] | 90+ Days Past Due [Member]
Aged analysis of the company's loans [Abstract]
90 + Days Past Due and Still Accruing		1,351	2,165
Residential Portfolio Segment [Member] | Consumer Mortgage [Member] | Acquired Loans [Member]
Aged analysis of the company's loans [Abstract]
Nonaccrual		1,473	2,122
Total Past Due		2,874	4,246
Current		56,899	64,737
Acquired Impaired	[1]	0	0
Total Loans		59,773	68,983
Residential Portfolio Segment [Member] | Consumer Mortgage [Member] | Acquired Loans [Member] | Past Due 30 - 89 Days [Member]
Aged analysis of the company's loans [Abstract]
Total Past Due		1,271	1,892
Residential Portfolio Segment [Member] | Consumer Mortgage [Member] | Acquired Loans [Member] | 90+ Days Past Due [Member]
Aged analysis of the company's loans [Abstract]
90 + Days Past Due and Still Accruing		130	232
Commercial Portfolio Segment [Member] | Business Lending [Member]
Aged analysis of the company's loans [Abstract]
Total Loans		1,288,772	1,262,484
Commercial Portfolio Segment [Member] | Business Lending [Member] | Legacy Loans [Member]
Aged analysis of the company's loans [Abstract]
Nonaccrual		6,402	2,291
Total Past Due		8,724	9,379
Current		1,159,228	1,115,215
Total Loans		1,167,952	1,124,594
Commercial Portfolio Segment [Member] | Business Lending [Member] | Legacy Loans [Member] | Past Due 30 - 89 Days [Member]
Aged analysis of the company's loans [Abstract]
Total Past Due		2,187	6,738
Commercial Portfolio Segment [Member] | Business Lending [Member] | Legacy Loans [Member] | 90+ Days Past Due [Member]
Aged analysis of the company's loans [Abstract]
90 + Days Past Due and Still Accruing		135	350
Commercial Portfolio Segment [Member] | Business Lending [Member] | Acquired Loans [Member]
Aged analysis of the company's loans [Abstract]
Nonaccrual		710	489
Total Past Due		902	1,097
Current		115,243	131,481
Acquired Impaired	[1]	4,675	5,312
Total Loans		120,820	137,890
Commercial Portfolio Segment [Member] | Business Lending [Member] | Acquired Loans [Member] | Past Due 30 - 89 Days [Member]
Aged analysis of the company's loans [Abstract]
Total Past Due		192	608
Commercial Portfolio Segment [Member] | Business Lending [Member] | Acquired Loans [Member] | 90+ Days Past Due [Member]
Aged analysis of the company's loans [Abstract]
90 + Days Past Due and Still Accruing		0	0
Consumer Portfolio Segment [Member] | Consumer Indirect [Member]
Aged analysis of the company's loans [Abstract]
Total Loans		872,988	833,968
Consumer Portfolio Segment [Member] | Consumer Indirect [Member] | Legacy Loans [Member]
Aged analysis of the company's loans [Abstract]
Nonaccrual		0	10
Total Past Due		9,843	10,621
Current		862,571	822,124
Total Loans		872,414	832,745
Consumer Portfolio Segment [Member] | Consumer Indirect [Member] | Legacy Loans [Member] | Past Due 30 - 89 Days [Member]
Aged analysis of the company's loans [Abstract]
Total Past Due		9,785	10,529
Consumer Portfolio Segment [Member] | Consumer Indirect [Member] | Legacy Loans [Member] | 90+ Days Past Due [Member]
Aged analysis of the company's loans [Abstract]
90 + Days Past Due and Still Accruing		58	82
Consumer Portfolio Segment [Member] | Consumer Indirect [Member] | Acquired Loans [Member]
Aged analysis of the company's loans [Abstract]
Nonaccrual		0	0
Total Past Due		25	40
Current		549	1,183
Acquired Impaired	[1]	0	0
Total Loans		574	1,223
Consumer Portfolio Segment [Member] | Consumer Indirect [Member] | Acquired Loans [Member] | Past Due 30 - 89 Days [Member]
Aged analysis of the company's loans [Abstract]
Total Past Due		25	40
Consumer Portfolio Segment [Member] | Consumer Indirect [Member] | Acquired Loans [Member] | 90+ Days Past Due [Member]
Aged analysis of the company's loans [Abstract]
90 + Days Past Due and Still Accruing		0	0
Consumer Portfolio Segment [Member] | Consumer Direct [Member]
Aged analysis of the company's loans [Abstract]
Total Loans		184,479	184,028
Consumer Portfolio Segment [Member] | Consumer Direct [Member] | Legacy Loans [Member]
Aged analysis of the company's loans [Abstract]
Nonaccrual		1	2
Total Past Due		1,190	1,427
Current		179,428	177,158
Total Loans		180,618	178,585
Consumer Portfolio Segment [Member] | Consumer Direct [Member] | Legacy Loans [Member] | Past Due 30 - 89 Days [Member]
Aged analysis of the company's loans [Abstract]
Total Past Due		1,148	1,389
Consumer Portfolio Segment [Member] | Consumer Direct [Member] | Legacy Loans [Member] | 90+ Days Past Due [Member]
Aged analysis of the company's loans [Abstract]
90 + Days Past Due and Still Accruing		41	36
Consumer Portfolio Segment [Member] | Consumer Direct [Member] | Acquired Loans [Member]
Aged analysis of the company's loans [Abstract]
Nonaccrual		14	18
Total Past Due		140	192
Current		3,721	5,251
Acquired Impaired	[1]	0	0
Total Loans		3,861	5,443
Consumer Portfolio Segment [Member] | Consumer Direct [Member] | Acquired Loans [Member] | Past Due 30 - 89 Days [Member]
Aged analysis of the company's loans [Abstract]
Total Past Due		126	174
Consumer Portfolio Segment [Member] | Consumer Direct [Member] | Acquired Loans [Member] | 90+ Days Past Due [Member]
Aged analysis of the company's loans [Abstract]
90 + Days Past Due and Still Accruing		0	0
Consumer Portfolio Segment [Member] | Home Equity [Member]
Aged analysis of the company's loans [Abstract]
Total Loans		345,446	342,342
Consumer Portfolio Segment [Member] | Home Equity [Member] | Legacy Loans [Member]
Aged analysis of the company's loans [Abstract]
Nonaccrual		1,993	2,172
Total Past Due		3,307	4,169
Current		289,015	278,904
Total Loans		292,322	283,073
Consumer Portfolio Segment [Member] | Home Equity [Member] | Legacy Loans [Member] | Past Due 30 - 89 Days [Member]
Aged analysis of the company's loans [Abstract]
Total Past Due		1,023	1,802
Consumer Portfolio Segment [Member] | Home Equity [Member] | Legacy Loans [Member] | 90+ Days Past Due [Member]
Aged analysis of the company's loans [Abstract]
90 + Days Past Due and Still Accruing		291	195
Consumer Portfolio Segment [Member] | Home Equity [Member] | Acquired Loans [Member]
Aged analysis of the company's loans [Abstract]
Nonaccrual		432	426
Total Past Due		947	1,146
Current		52,177	58,123
Acquired Impaired	[1]	0	0
Total Loans		53,124	59,269
Consumer Portfolio Segment [Member] | Home Equity [Member] | Acquired Loans [Member] | Past Due 30 - 89 Days [Member]
Aged analysis of the company's loans [Abstract]
Total Past Due		446	674
Consumer Portfolio Segment [Member] | Home Equity [Member] | Acquired Loans [Member] | 90+ Days Past Due [Member]
Aged analysis of the company's loans [Abstract]
90 + Days Past Due and Still Accruing		$ 69	$ 46
[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 cashflows, is being recognized on all acquired impaired loans.

LOANS, Amount of Business Lendi

LOANS, Amount of Business Lending Loans by Credit Quality Category (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Financing Receivable, Recorded Investment [Line Items]
Loans	$ 4,313,547	$ 4,236,206
Legacy Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	4,075,395	3,963,398
Acquired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	238,152	272,808
Business Lending [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	1,288,772	1,262,484
Business Lending [Member] | Legacy Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	1,167,952	1,124,594
Business Lending [Member] | Acquired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	120,820	137,890
Business Lending [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	1,075,069	1,043,470
Business Lending [Member] | Pass [Member] | Legacy Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	990,125	949,960
Business Lending [Member] | Pass [Member] | Acquired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	84,944	93,510
Business Lending [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	126,839	121,214
Business Lending [Member] | Special Mention [Member] | Legacy Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	111,496	103,176
Business Lending [Member] | Special Mention [Member] | Acquired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	15,343	18,038
Business Lending [Member] | Classified [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	81,689	92,488
Business Lending [Member] | Classified [Member] | Legacy Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	65,831	71,458
Business Lending [Member] | Classified [Member] | Acquired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	15,858	21,030
Business Lending [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	500	0
Business Lending [Member] | Doubtful [Member] | Legacy Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	500	0
Business Lending [Member] | Doubtful [Member] | Acquired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Business Lending [Member] | Acquired Impaired [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	4,675	5,312
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	4,675	5,312
All Other Loans [Member] | Legacy Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	2,907,443	2,838,804
All Other Loans [Member] | Acquired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	117,332	134,918
All Other Loans [Member] | Performing [Member] | Legacy Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	2,891,600	2,820,941
All Other Loans [Member] | Performing [Member] | Acquired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	115,214	132,074
All Other Loans [Member] | Nonperforming [Member] | Legacy Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	15,843	17,863
All Other Loans [Member] | Nonperforming [Member] | Acquired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	2,118	2,844
Consumer Mortgage [Member] | Legacy Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	1,562,089	1,544,401
Consumer Mortgage [Member] | Acquired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	59,773	68,983
Consumer Mortgage [Member] | Performing [Member] | Legacy Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	1,548,630	1,529,035
Consumer Mortgage [Member] | Performing [Member] | Acquired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	58,170	66,629
Consumer Mortgage [Member] | Nonperforming [Member] | Legacy Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	13,459	15,366
Consumer Mortgage [Member] | Nonperforming [Member] | Acquired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	1,603	2,354
Consumer Indirect [Member] | Legacy Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	872,414	832,745
Consumer Indirect [Member] | Acquired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	574	1,223
Consumer Indirect [Member] | Performing [Member] | Legacy Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	872,356	832,653
Consumer Indirect [Member] | Performing [Member] | Acquired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	574	1,223
Consumer Indirect [Member] | Nonperforming [Member] | Legacy Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	58	92
Consumer Indirect [Member] | Nonperforming [Member] | Acquired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Consumer Direct [Member] | Legacy Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	180,618	178,585
Consumer Direct [Member] | Acquired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	3,861	5,443
Consumer Direct [Member] | Performing [Member] | Legacy Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	180,576	178,547
Consumer Direct [Member] | Performing [Member] | Acquired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	3,847	5,425
Consumer Direct [Member] | Nonperforming [Member] | Legacy Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	42	38
Consumer Direct [Member] | Nonperforming [Member] | Acquired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	14	18
Home Equity [Member] | Legacy Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	292,322	283,073
Home Equity [Member] | Acquired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	53,124	59,269
Home Equity [Member] | Performing [Member] | Legacy Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	290,038	280,706
Home Equity [Member] | Performing [Member] | Acquired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	52,623	58,797
Home Equity [Member] | Nonperforming [Member] | Legacy Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	2,284	2,367
Home Equity [Member] | Nonperforming [Member] | Acquired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	$ 501	$ 472

LOANS, Summary of Impaired Loan

LOANS, Summary of Impaired Loans, Excluding Purchased Impaired (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Impaired loans [Abstract]
Loans with allowance allocation	$ 2,800	$ 0
Loans without allowance allocation	1,086	0
Carrying balance	3,886	0
Contractual balance	3,986	0
Specifically allocated allowance	$ 566	$ 0

LOANS, Troubled Debt Restructur

LOANS, Troubled Debt Restructuring (TDR) (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015USD ($)Loan	Sep. 30, 2014USD ($)Loan	Sep. 30, 2015USD ($)Loan	Sep. 30, 2014USD ($)Loan	Dec. 31, 2014USD ($)Loan
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings, nonaccrual number | Loan	51		51		68
Troubled debt restructurings, nonaccrual amount	$ 1,718		$ 1,718		$ 2,752
Troubled debt restructurings, accruing number | Loan	144		144		157
Troubled debt restructurings, accruing amount	$ 3,155		$ 3,155		$ 3,200
Troubled debt restructurings, total number | Loan	195		195		225
Troubled debt restructurings, total amount	$ 4,873		$ 4,873		$ 5,952
TDR occurring during the period, number of contracts | Loan	17	27	34	70
TDR occurring during the year, post-modification recorded investment	$ 516	$ 455	$ 862	$ 2,093
Maximum [Member]
Financing Receivable, Modifications [Line Items]
Threshold balance of TDR loans collectively included in general loan loss allocation and qualitative review	500		500
Business Lending [Member] | Minimum [Member]
Financing Receivable, Modifications [Line Items]
Threshold balance of loans individually evaluated for impairment	$ 500		$ 500
Residential Portfolio Segment [Member] | Consumer Mortgage [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings, nonaccrual number | Loan	41		41		49
Troubled debt restructurings, nonaccrual amount	$ 1,500		$ 1,500		$ 2,092
Troubled debt restructurings, accruing number | Loan	38		38		37
Troubled debt restructurings, accruing amount	$ 1,595		$ 1,595		$ 1,770
Troubled debt restructurings, total number | Loan	79		79		86
Troubled debt restructurings, total amount	$ 3,095		$ 3,095		$ 3,862
TDR occurring during the period, number of contracts | Loan	4	6	8	22
TDR occurring during the year, post-modification recorded investment	$ 404	$ 283	$ 585	$ 1,016
Commercial Portfolio Segment [Member] | Business Lending [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings, nonaccrual number | Loan	3		3		6
Troubled debt restructurings, nonaccrual amount	$ 117		$ 117		$ 442
Troubled debt restructurings, accruing number | Loan	4		4		3
Troubled debt restructurings, accruing amount	$ 567		$ 567		$ 468
Troubled debt restructurings, total number | Loan	7		7		9
Troubled debt restructurings, total amount	$ 684		$ 684		$ 910
TDR occurring during the period, number of contracts | Loan	0	0	0	7
TDR occurring during the year, post-modification recorded investment	$ 0	$ 0	$ 0	$ 556
Consumer Portfolio Segment [Member] | Consumer Indirect [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings, nonaccrual number | Loan	0		0		0
Troubled debt restructurings, nonaccrual amount	$ 0		$ 0		$ 0
Troubled debt restructurings, accruing number | Loan	74		74		79
Troubled debt restructurings, accruing amount	$ 700		$ 700		$ 615
Troubled debt restructurings, total number | Loan	74		74		79
Troubled debt restructurings, total amount	$ 700		$ 700		$ 615
TDR occurring during the period, number of contracts | Loan	12	16	23	29
TDR occurring during the year, post-modification recorded investment	$ 112	$ 165	$ 263	$ 334
Consumer Portfolio Segment [Member] | Consumer Direct [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings, nonaccrual number | Loan	0		0		0
Troubled debt restructurings, nonaccrual amount	$ 0		$ 0		$ 0
Troubled debt restructurings, accruing number | Loan	16		16		25
Troubled debt restructurings, accruing amount	$ 35		$ 35		$ 69
Troubled debt restructurings, total number | Loan	16		16		25
Troubled debt restructurings, total amount	$ 35		$ 35		$ 69
TDR occurring during the period, number of contracts | Loan	1	5	2	7
TDR occurring during the year, post-modification recorded investment	$ 0	$ 7	$ 1	$ 14
Consumer Portfolio Segment [Member] | Home Equity [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings, nonaccrual number | Loan	7		7		13
Troubled debt restructurings, nonaccrual amount	$ 101		$ 101		$ 218
Troubled debt restructurings, accruing number | Loan	12		12		13
Troubled debt restructurings, accruing amount	$ 258		$ 258		$ 278
Troubled debt restructurings, total number | Loan	19		19		26
Troubled debt restructurings, total amount	$ 359		$ 359		$ 496
TDR occurring during the period, number of contracts | Loan	0	0	1	5
TDR occurring during the year, post-modification recorded investment	$ 0	$ 0	$ 13	$ 173

LOANS, Allowance for Loan Losse

LOANS, Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Allowance for loan losses [Roll Forward]
Beginning balance	$ 45,282	$ 44,615	$ 45,341	$ 44,319
Charge-offs	(2,659)	(2,740)	(7,361)	(7,946)
Recoveries	1,059	1,651	4,488	4,253
Provision	1,906	1,747	3,120	4,647
Ending balance	45,588	45,273	45,588	45,273
Acquired Impaired [Member]
Allowance for loan losses [Roll Forward]
Beginning balance	93	163	173	530
Charge-offs	(59)	(10)	(102)	(30)
Recoveries	0	0	0	0
Provision	6	(2)	(31)	(349)
Ending balance	40	151	40	151
Residential Portfolio Segment [Member] | Consumer Mortgage [Member]
Allowance for loan losses [Roll Forward]
Beginning balance	10,192	9,375	10,286	8,994
Charge-offs	(276)	(203)	(917)	(734)
Recoveries	9	14	75	67
Provision	421	268	902	1,127
Ending balance	10,346	9,454	10,346	9,454
Commercial Portfolio Segment [Member] | Business Lending [Member]
Allowance for loan losses [Roll Forward]
Beginning balance	15,353	16,553	15,787	17,507
Charge-offs	(234)	(435)	(667)	(940)
Recoveries	107	335	715	607
Provision	112	138	(497)	(583)
Ending balance	15,338	16,591	15,338	16,591
Consumer Portfolio Segment [Member] | Consumer Indirect [Member]
Allowance for loan losses [Roll Forward]
Beginning balance	11,602	11,354	11,544	10,248
Charge-offs	(1,597)	(1,711)	(4,421)	(4,573)
Recoveries	740	1,025	3,077	2,826
Provision	1,367	1,231	1,912	3,398
Ending balance	12,112	11,899	12,112	11,899
Consumer Portfolio Segment [Member] | Consumer Direct [Member]
Allowance for loan losses [Roll Forward]
Beginning balance	2,991	3,298	3,083	3,181
Charge-offs	(427)	(307)	(1,066)	(1,219)
Recoveries	174	239	566	677
Provision	359	100	514	691
Ending balance	3,097	3,330	3,097	3,330
Consumer Portfolio Segment [Member] | Home Equity [Member]
Allowance for loan losses [Roll Forward]
Beginning balance	2,677	1,860	2,701	1,830
Charge-offs	(66)	(74)	(188)	(450)
Recoveries	29	38	55	76
Provision	102	77	174	445
Ending balance	2,742	1,901	2,742	1,901
Unallocated Financing Receivables [Member]
Allowance for loan losses [Roll Forward]
Beginning balance	2,374	2,012	1,767	2,029
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision	(461)	(65)	146	(82)
Ending balance	$ 1,913	$ 1,947	$ 1,913	$ 1,947

GOODWILL AND IDENTIFIABLE INT45

GOODWILL AND IDENTIFIABLE INTANGIBLE ASSETS (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Dec. 31, 2014	Sep. 30, 2014
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 50,539	$ 50,345
Accumulated Amortization	(41,188)	(38,546)
Net Carrying Amount	9,351	11,799
Estimated aggregate amortization expense [Abstract]
Oct - Dec 2015	788
2,016	2,652
2,017	1,943
2,018	1,453
2,019	1,026
Thereafter	1,489
Net Carrying Amount	9,351	11,799
Components of goodwill [Abstract]
Goodwill	379,998	379,998
Goodwill, Activity	0
Accumulated impairment	(4,824)	(4,824)
Accumulated impairment, Activity	0
Goodwill, net	375,174	375,174	$ 375,174
Goodwill, net, Activity	0
Core Deposit Intangibles [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	40,326	40,326
Accumulated Amortization	(32,432)	(30,303)
Net Carrying Amount	7,894	10,023
Estimated aggregate amortization expense [Abstract]
Net Carrying Amount	7,894	10,023
Other Intangibles [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	10,213	10,019
Accumulated Amortization	(8,756)	(8,243)
Net Carrying Amount	1,457	1,776
Estimated aggregate amortization expense [Abstract]
Net Carrying Amount	$ 1,457	$ 1,776

MANDATORILY REDEEMABLE PREFER46

MANDATORILY REDEEMABLE PREFERRED SECURITIES (Details) $ in Millions	9 Months Ended
	Sep. 30, 2015USD ($)Trust
Debt Instrument [Line Items]
Number of wholly owned, unconsolidated subsidiary trusts | Trust	2
Percent ownership of unconsolidated subsidiary trusts	100.00%
Community Statutory Trust III [Member]
Terms of preferred securities for each trust [Abstract]
Issuance Date	Jul. 31, 2001
Par Amount	$ 24.5
Variable Interest Rate Basis	3 month LIBOR
Variable Interest Rate, Basis Spread	3.58%
Effective Interest Rate	3.88%
Maturity Date	Jul. 31, 2031
Call Price	Par
Community Capital Trust IV [Member]
Terms of preferred securities for each trust [Abstract]
Issuance Date	Dec. 8, 2006
Par Amount	$ 75
Variable Interest Rate Basis	3 month LIBOR
Variable Interest Rate, Basis Spread	1.65%
Effective Interest Rate	1.99%
Maturity Date	Dec. 15, 2036
Call Price	Par

BENEFIT PLANS (Details)

BENEFIT PLANS (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Pension Benefits [Member]
Net periodic benefit cost [Abstract]
Service cost	$ 831	$ 882	$ 2,493	$ 2,647
Interest cost	1,375	1,318	4,124	3,953
Expected return on plan assets	(3,042)	(2,980)	(9,127)	(8,941)
Amortization of unrecognized net loss	366	(77)	1,099	(230)
Amortization of prior service cost	2	1	6	4
Net periodic benefit income	(468)	(856)	(1,405)	(2,567)
Post-retirement Benefits [Member]
Net periodic benefit cost [Abstract]
Service cost	0	0	0	0
Interest cost	22	26	65	76
Expected return on plan assets	0	0	0	0
Amortization of unrecognized net loss	(3)	(2)	(10)	(5)
Amortization of prior service cost	(45)	(45)	(134)	(134)
Net periodic benefit income	$ (26)	$ (21)	$ (79)	$ (63)

EARNINGS PER SHARE (Details)

EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
EARNINGS PER SHARE [Abstract]
Weighted-average anti-dilutive stock options outstanding (in shares)	600,000	300,000	500,000	200,000
Basic earnings per share [Abstract]
Net income	$ 25,022	$ 22,371	$ 71,159	$ 68,220
Income attributable to unvested stock-based compensation awards	(129)	(115)	(352)	(337)
Income available to common shareholders	$ 24,893	$ 22,256	$ 70,807	$ 67,883
Weighted-average common shares outstanding - basic (in shares)	40,873,000	40,596,000	40,741,000	40,543,000
Basic earnings per share (in dollars per share)	$ 0.61	$ 0.55	$ 1.74	$ 1.67
Diluted earnings per share [Abstract]
Net income	$ 25,022	$ 22,371	$ 71,159	$ 68,220
Income attributable to unvested stock-based compensation awards	(129)	(115)	(352)	(337)
Income available to common shareholders	$ 24,893	$ 22,256	$ 70,807	$ 67,883
Weighted-average common shares outstanding - basic (in shares)	40,873,000	40,596,000	40,741,000	40,543,000
Assumed exercise of stock options (in shares)	386,000	453,000	400,000	482,000
Weighted-average common shares outstanding - diluted (in shares)	41,259,000	41,049,000	41,141,000	41,025,000
Diluted earnings per share (in dollars per share)	$ 0.60	$ 0.54	$ 1.72	$ 1.65
Stock Repurchase Program [Abstract]
Number of common shares authorized to be repurchased (in shares)					2,000,000
Number of common shares repurchased (in shares)			265,230		123,000

COMMITMENTS, CONTINGENT LIABI49

COMMITMENTS, CONTINGENT LIABILITIES AND RESTRICTIONS (Details) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2014USD ($)	Sep. 30, 2015USD ($)ClassAction	Dec. 31, 2014USD ($)
Off-balance Sheet Risks, Disclosure Information [Line Items]
Face value disclosure off-balance sheet risks face amount liability		$ 748,932	$ 757,743
Range of reasonably possible losses for such matters in the aggregate, beyond the existing recorded liability, lower range		0
Range of reasonably possible losses for such matters in the aggregate, beyond the existing recorded liability, upper range		$ 1,000
Number of class actions in which the Bank is involved | ClassAction		2
Legal settlement, amount	$ 2,800
Commitments to Extend Credit [Member]
Off-balance Sheet Risks, Disclosure Information [Line Items]
Face value disclosure off-balance sheet risks face amount liability		$ 730,652	733,827
Standby Letters of Credit [Member]
Off-balance Sheet Risks, Disclosure Information [Line Items]
Face value disclosure off-balance sheet risks face amount liability		$ 18,280	$ 23,916

FAIR VALUE, Financial Assets an

FAIR VALUE, Financial Assets and Liabilities Accounted for at Fair Value On a Recurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Available-for-sale investment securities [Abstract]
Available-for-sale investment securities	$ 2,867,439	$ 2,472,925
Recurring [Member]
Available-for-sale investment securities [Abstract]
Available-for-sale investment securities	2,867,439	2,472,925
Mortgages loans held for sale	1,014	1,042
Commitments to originate real estate loans for sale	276	185
Forward sales commitments	(94)	(43)
Total	2,868,635	2,474,109
Recurring [Member] | U.S. Treasury and Agency Securities [Member]
Available-for-sale investment securities [Abstract]
Available-for-sale investment securities	1,933,270	1,517,733
Recurring [Member] | Obligations of State and Political Subdivisions [Member]
Available-for-sale investment securities [Abstract]
Available-for-sale investment securities	686,627	671,903
Recurring [Member] | Government Agency Mortgage-Backed Securities [Member]
Available-for-sale investment securities [Abstract]
Available-for-sale investment securities	215,936	237,728
Recurring [Member] | Corporate Debt Securities [Member]
Available-for-sale investment securities [Abstract]
Available-for-sale investment securities	16,782	27,091
Recurring [Member] | Government Agency Collateralized Mortgage Obligations [Member]
Available-for-sale investment securities [Abstract]
Available-for-sale investment securities	14,418	18,025
Recurring [Member] | Marketable Equity Securities [Member]
Available-for-sale investment securities [Abstract]
Available-for-sale investment securities	406	445
Recurring [Member] | Level 1 [Member]
Available-for-sale investment securities [Abstract]
Available-for-sale investment securities	1,933,676	1,497,112
Mortgages loans held for sale	0	0
Commitments to originate real estate loans for sale	0	0
Forward sales commitments	0	0
Total	1,933,676	1,497,112
Recurring [Member] | Level 1 [Member] | U.S. Treasury and Agency Securities [Member]
Available-for-sale investment securities [Abstract]
Available-for-sale investment securities	1,933,270	1,496,667
Recurring [Member] | Level 1 [Member] | Obligations of State and Political Subdivisions [Member]
Available-for-sale investment securities [Abstract]
Available-for-sale investment securities	0	0
Recurring [Member] | Level 1 [Member] | Government Agency Mortgage-Backed Securities [Member]
Available-for-sale investment securities [Abstract]
Available-for-sale investment securities	0	0
Recurring [Member] | Level 1 [Member] | Corporate Debt Securities [Member]
Available-for-sale investment securities [Abstract]
Available-for-sale investment securities	0	0
Recurring [Member] | Level 1 [Member] | Government Agency Collateralized Mortgage Obligations [Member]
Available-for-sale investment securities [Abstract]
Available-for-sale investment securities	0	0
Recurring [Member] | Level 1 [Member] | Marketable Equity Securities [Member]
Available-for-sale investment securities [Abstract]
Available-for-sale investment securities	406	445
Recurring [Member] | Level 2 [Member]
Available-for-sale investment securities [Abstract]
Available-for-sale investment securities	933,763	975,813
Mortgages loans held for sale	1,014	1,042
Commitments to originate real estate loans for sale	0	0
Forward sales commitments	(94)	(43)
Total	934,683	976,812
Mortgage loans held for sale, at principal value	1,000
Recurring [Member] | Level 2 [Member] | U.S. Treasury and Agency Securities [Member]
Available-for-sale investment securities [Abstract]
Available-for-sale investment securities	0	21,066
Recurring [Member] | Level 2 [Member] | Obligations of State and Political Subdivisions [Member]
Available-for-sale investment securities [Abstract]
Available-for-sale investment securities	686,627	671,903
Recurring [Member] | Level 2 [Member] | Government Agency Mortgage-Backed Securities [Member]
Available-for-sale investment securities [Abstract]
Available-for-sale investment securities	215,936	237,728
Recurring [Member] | Level 2 [Member] | Corporate Debt Securities [Member]
Available-for-sale investment securities [Abstract]
Available-for-sale investment securities	16,782	27,091
Recurring [Member] | Level 2 [Member] | Government Agency Collateralized Mortgage Obligations [Member]
Available-for-sale investment securities [Abstract]
Available-for-sale investment securities	14,418	18,025
Recurring [Member] | Level 2 [Member] | Marketable Equity Securities [Member]
Available-for-sale investment securities [Abstract]
Available-for-sale investment securities	0	0
Recurring [Member] | Level 3 [Member]
Available-for-sale investment securities [Abstract]
Available-for-sale investment securities	0	0
Mortgages loans held for sale	0	0
Commitments to originate real estate loans for sale	276	185
Forward sales commitments	0	0
Total	276	185
Recurring [Member] | Level 3 [Member] | U.S. Treasury and Agency Securities [Member]
Available-for-sale investment securities [Abstract]
Available-for-sale investment securities	0	0
Recurring [Member] | Level 3 [Member] | Obligations of State and Political Subdivisions [Member]
Available-for-sale investment securities [Abstract]
Available-for-sale investment securities	0	0
Recurring [Member] | Level 3 [Member] | Government Agency Mortgage-Backed Securities [Member]
Available-for-sale investment securities [Abstract]
Available-for-sale investment securities	0	0
Recurring [Member] | Level 3 [Member] | Corporate Debt Securities [Member]
Available-for-sale investment securities [Abstract]
Available-for-sale investment securities	0	0
Recurring [Member] | Level 3 [Member] | Government Agency Collateralized Mortgage Obligations [Member]
Available-for-sale investment securities [Abstract]
Available-for-sale investment securities	0	0
Recurring [Member] | Level 3 [Member] | Marketable Equity Securities [Member]
Available-for-sale investment securities [Abstract]
Available-for-sale investment securities	$ 0	$ 0

FAIR VALUE, Unobservable Input

FAIR VALUE, Unobservable Input Reconciliation (Details) - Commitments to Originate Real Estate Loans for Sale [Member] - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Level 3 Assets Measured at Fair Value on a Recurring Basis [Abstract]
Beginning balance		$ 195	$ 142	$ 185	$ 44
Total losses included in earnings	[1]	(195)	(142)	(532)	(253)
Commitments to originate real estate loans held for sale, net		276	170	623	379
Ending balance		$ 276	$ 170	$ 276	$ 170
[1]	Amounts included in earnings associated with the commitments to originate real estate loans for sale are reported as a component of other banking services in the Consolidated Statement of Income.

FAIR VALUE, Assets and Liabilit

FAIR VALUE, Assets and Liabilities Measured on Nonrecurring Basis (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Non-recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired Loans	$ 2,708	$ 0
Other real estate owned	2,531	1,855
Mortgage servicing rights	553	0
Total	5,792	1,855
Non-recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired Loans	0	0
Other real estate owned	0	0
Mortgage servicing rights	0	0
Total	0	0
Non-recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired Loans	0	0
Other real estate owned	0	0
Mortgage servicing rights	0	0
Total	0	0
Non-recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired Loans	2,708	0
Other real estate owned	2,531	1,855
Mortgage servicing rights	553	0
Total	5,792	1,855
Other Real Estate Owned [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total	$ 2,531	$ 1,855
Other Real Estate Owned [Member] | Level 3 [Member] | Minimum [Member] | Market Approach Valuation Technique [Member]
Fair Value Inputs [Abstract]
Discount rate	5.00%
Other Real Estate Owned [Member] | Level 3 [Member] | Maximum [Member] | Market Approach Valuation Technique [Member]
Fair Value Inputs [Abstract]
Discount rate	65.00%

FAIR VALUE, Significant Unobser

FAIR VALUE, Significant Unobservable Inputs (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Impaired Loans [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair value	$ 2,708
Impaired Loans [Member] | Fair Value of Collateral [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Estimated cost of disposal/market adjustment	10.00%
Impaired Loans [Member] | Fair Value of Collateral [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Estimated cost of disposal/market adjustment	65.60%
Impaired Loans [Member] | Fair Value of Collateral [Member] | Weighted Average [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Estimated cost of disposal/market adjustment	61.50%
Other Real Estate Owned [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair value	$ 2,531	$ 1,855
Other Real Estate Owned [Member] | Fair Value of Collateral [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Estimated cost of disposal/market adjustment	5.40%	10.00%
Other Real Estate Owned [Member] | Fair Value of Collateral [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Estimated cost of disposal/market adjustment	64.70%	77.50%
Other Real Estate Owned [Member] | Fair Value of Collateral [Member] | Weighted Average [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Estimated cost of disposal/market adjustment	23.90%	30.60%
Commitments To Originate Real Estate Loans For Sale [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair value	$ 276	$ 185
Commitments To Originate Real Estate Loans For Sale [Member] | Discounted Cash Flow [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Embedded servicing value	1.00%	1.00%
Mortgage Servicing Rights [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair value	$ 553
Mortgage Servicing Rights [Member] | Discounted Cash Flow [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Weighted average constant prepayment rate	11.40%
Weighted average discount rate	3.62%
Adequate compensation	$ 7

FAIR VALUE, Balance Sheet Group

FAIR VALUE, Balance Sheet Grouping (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Carrying Value [Member]
Financial assets [Abstract]
Net loans	$ 4,267,959	$ 4,190,865
Financial liabilities [Abstract]
Deposits	6,148,110	5,935,264
Borrowings	558,100	338,000
Subordinated debt held by unconsolidated subsidiary trusts	102,140	102,122
Fair Value [Member]
Financial assets [Abstract]
Net loans	4,317,941	4,251,565
Financial liabilities [Abstract]
Deposits	6,147,341	5,935,690
Borrowings	558,100	338,000
Subordinated debt held by unconsolidated subsidiary trusts	$ 87,170	$ 85,189

SEGMENT INFORMATION (Details)

SEGMENT INFORMATION (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Information about reportable segments
Net interest income	$ 62,363	$ 61,394	$ 183,431	$ 182,672
Provision for loan losses	1,906	1,747	3,120	4,647
Noninterest revenues	31,386	31,072	90,151	89,092
Amortization of intangible assets	843	1,051	2,642	3,293
Other operating expenses	55,236	57,760	165,433	166,603
Income before income taxes	35,764	31,908	102,387	97,221
Assets	7,997,166	7,502,643	7,997,166	7,502,643	$ 7,489,440
Goodwill	375,174	375,174	375,174	375,174	$ 375,174
Eliminations [Member]
Information about reportable segments
Net interest income	0	0	0	0
Provision for loan losses	0	0	0	0
Noninterest revenues	(526)	(486)	(1,462)	(1,365)
Amortization of intangible assets	0	0	0	0
Other operating expenses	(526)	(486)	(1,462)	(1,365)
Income before income taxes	0	0	0	0
Assets	(23,058)	(17,957)	(23,058)	(17,957)
Goodwill	0	0	0	0
Banking [Member] | Operating Segments [Member]
Information about reportable segments
Net interest income	62,295	61,350	183,243	182,537
Provision for loan losses	1,906	1,747	3,120	4,647
Noninterest revenues	15,503	15,700	43,037	43,922
Amortization of intangible assets	680	850	2,129	2,644
Other operating expenses	43,790	46,837	131,002	133,680
Income before income taxes	31,422	27,616	90,029	85,488
Assets	7,970,345	7,476,030	7,970,345	7,476,030
Goodwill	364,495	364,495	364,495	364,495
Employee Benefit Services [Member] | Operating Segments [Member]
Information about reportable segments
Net interest income	37	21	102	67
Provision for loan losses	0	0	0	0
Noninterest revenues	11,674	11,049	34,633	32,434
Amortization of intangible assets	125	153	391	496
Other operating expenses	8,644	8,140	26,052	24,622
Income before income taxes	2,942	2,777	8,292	7,383
Assets	30,958	29,605	30,958	29,605
Goodwill	8,019	8,019	8,019	8,019
Wealth Management [Member] | Operating Segments [Member]
Information about reportable segments
Net interest income	31	23	86	68
Provision for loan losses	0	0	0	0
Noninterest revenues	4,735	4,809	13,943	14,101
Amortization of intangible assets	38	48	122	153
Other operating expenses	3,328	3,269	9,841	9,666
Income before income taxes	1,400	1,515	4,066	4,350
Assets	18,921	14,965	18,921	14,965
Goodwill	$ 2,660	$ 2,660	$ 2,660	$ 2,660