CONSOLIDATED STATEMENTS OF CONDITION (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Cash and cash equivalents
Cash and non-interest-bearing deposits due from banks	$ 41,140subk_NonInterestBearingDeposits	$ 69,065subk_NonInterestBearingDeposits
Interest-bearing deposits due from banks	13,376us-gaap_InterestBearingDepositsInBanks	62,287us-gaap_InterestBearingDepositsInBanks
Federal funds sold	1,000us-gaap_FederalFundsSold	1,000us-gaap_FederalFundsSold
Total cash and cash equivalents	55,516	132,352
Interest-bearing time deposits in other banks	10,000	10,000
Federal Reserve Bank, Federal Home Loan Bank and other stock	8,600	2,863
Investment securities:
Available for sale, at fair value	298,670us-gaap_AvailableForSaleSecurities	400,780us-gaap_AvailableForSaleSecurities
Held to maturity (fair value of $64,796 and $12,234 at December 31, 2014 and 2013, respectively)	62,270us-gaap_HeldToMaturitySecurities	11,666us-gaap_HeldToMaturitySecurities
Total investment securities	360,940us-gaap_MarketableSecuritiesCurrent	412,446us-gaap_MarketableSecuritiesCurrent
Loans	1,355,427	1,068,848
Allowance for loan losses	19,200	17,263
Net loans	1,336,227	1,051,585
Loans held-for-sale	26,495us-gaap_LoansReceivableHeldForSaleNet	175us-gaap_LoansReceivableHeldForSaleNet
Premises and equipment, net	23,641us-gaap_PropertyPlantAndEquipmentNet	25,261us-gaap_PropertyPlantAndEquipmentNet
Bank owned life insurance	45,109us-gaap_BankOwnedLifeInsurance	38,755us-gaap_BankOwnedLifeInsurance
Deferred taxes	15,714	13,953
Income tax receivable	820us-gaap_IncomeTaxReceivable	0us-gaap_IncomeTaxReceivable
Accrued interest and loan fees receivable	5,676us-gaap_InterestReceivable	5,441us-gaap_InterestReceivable
Goodwill and other intangibles	2,991subk_GoodwillAndOtherIntangibles	2,978subk_GoodwillAndOtherIntangibles
Other assets	3,554us-gaap_OtherAssets	4,007us-gaap_OtherAssets
TOTAL ASSETS	1,895,283us-gaap_Assets	1,699,816us-gaap_Assets
LIABILITIES & STOCKHOLDERS' EQUITY
Demand deposits	683,634us-gaap_DemandDepositAccounts	628,616us-gaap_DemandDepositAccounts
Saving, N.O.W. and money market deposits	653,667	656,366
Time certificates of $100,000 or more	160,849us-gaap_TimeDeposits100000OrMore	158,337us-gaap_TimeDeposits100000OrMore
Other time deposits	57,910us-gaap_TimeDeposits	66,742us-gaap_TimeDeposits
Total deposits	1,556,060us-gaap_Deposits	1,510,061us-gaap_Deposits
Borrowings	130,000us-gaap_LongTermDebt	0us-gaap_LongTermDebt
Unfunded pension liability	6,303	258
Capital leases	4,511us-gaap_CapitalLeaseObligations	4,612us-gaap_CapitalLeaseObligations
Other liabilities	15,676us-gaap_OtherLiabilities	17,687us-gaap_OtherLiabilities
TOTAL LIABILITIES	1,712,550us-gaap_Liabilities	1,532,618us-gaap_Liabilities
COMMITMENTS AND CONTINGENT LIABILITIES
STOCKHOLDERS' EQUITY
Common stock (par value $2.50; 15,000,000 shares authorized; issued 13,836,508 shares at December 31, 2014 and 13,738,752 shares at December 31, 2013; outstanding 11,670,770 shares at December 31, 2014 and 11,573,014 shares at December 31, 2013)	34,591us-gaap_CommonStockValue	34,348us-gaap_CommonStockValue
Surplus	44,230	43,280
Retained earnings	116,169	102,273
Treasury stock at par (2,165,738 shares)	(5,414)us-gaap_TreasuryStockValue	(5,414)us-gaap_TreasuryStockValue
Accumulated other comprehensive loss, net of tax	(6,843)	(7,289)
TOTAL STOCKHOLDERS' EQUITY	182,733us-gaap_StockholdersEquity	167,198us-gaap_StockholdersEquity
TOTAL LIABILITIES & STOCKHOLDERS' EQUITY	$ 1,895,283	$ 1,699,816

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