Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Cash flows from operating activities:
Net income	$ 29,355us-gaap_ProfitLoss	$ 25,530us-gaap_ProfitLoss	$ 23,449us-gaap_ProfitLoss
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	4,583us-gaap_DepreciationAndAmortization	4,181us-gaap_DepreciationAndAmortization	3,828us-gaap_DepreciationAndAmortization
Net amortization of premiums on securities	3,241	4,532	5,284
Provision for loan losses	7,789us-gaap_ProvisionForLoanAndLeaseLosses	9,079us-gaap_ProvisionForLoanAndLeaseLosses	7,128us-gaap_ProvisionForLoanAndLeaseLosses
Share-based compensation	471us-gaap_ShareBasedCompensation	407us-gaap_ShareBasedCompensation	526us-gaap_ShareBasedCompensation
Deferred income tax expense	2,154us-gaap_DeferredIncomeTaxExpenseBenefit	1,547us-gaap_DeferredIncomeTaxExpenseBenefit	6,343us-gaap_DeferredIncomeTaxExpenseBenefit
Proceeds from sale of loans held for sale	16,543	26,184	55,067
Originations of loans held for sale	(14,457)	(31,657)	(52,754)
Increase in company owned life insurance	(1,753)us-gaap_BankOwnedLifeInsuranceIncome	(1,706)us-gaap_BankOwnedLifeInsuranceIncome	(1,751)us-gaap_BankOwnedLifeInsuranceIncome
Net gain on sale of loans held for sale	(313)us-gaap_GainLossOnSalesOfLoansNet	(117)us-gaap_GainLossOnSalesOfLoansNet	(1,421)us-gaap_GainLossOnSalesOfLoansNet
Net gain on disposal of investment securities	(2,041)us-gaap_GainLossOnSaleOfSecuritiesNet	(1,226)us-gaap_GainLossOnSaleOfSecuritiesNet	(2,651)us-gaap_GainLossOnSaleOfSecuritiesNet
Impairment charges on investment securities			91us-gaap_ImpairmentOfInvestments
Net (gain) loss on sale and disposal of other assets	(69)us-gaap_GainLossOnSaleOfOtherAssets	103us-gaap_GainLossOnSaleOfOtherAssets	381us-gaap_GainLossOnSaleOfOtherAssets
Amortization of tax credit investment	2,323us-gaap_InvestmentTaxCredit
Contributions to defined pension plan	(8,000)		(8,000)
Decrease in other assets	(1,606)	(6,640)	(4,249)
(Increase) decrease in other liabilities	(2,991)	6,981	7,429
Net cash provided by operating activities	35,229	37,198	38,700
Cash flows from investing activities:
Purchases of available for sale securities	(236,043)	(246,874)	(322,191)
Purchases of held to maturity securities	(63,770)	(19,598)	(15,484)
Proceeds from principal payments, maturities and calls on available for sale securities	140,338	143,053	175,679
Proceeds from principal payments, maturities and calls on held to maturity securities	31,026	14,784	20,819
Proceeds from sales of securities available for sale	81,600	1,327	2,823
Net loan originations	(84,812)	(131,949)	(151,311)
Purchases of company owned life insurance	(10,080)	(79)	(79)
Proceeds from sales of other assets	1,576	555	734
Purchases of premises and equipment	(5,330)	(3,411)	(5,840)
Net cash (paid) received from acquisitions	(7,995)		195,778
Net cash used in investing activities	(153,490)	(242,192)	(99,072)
Cash flows from financing activities:
Net increase in deposits	130,471us-gaap_IncreaseDecreaseInDeposits	58,262us-gaap_IncreaseDecreaseInDeposits	43,376us-gaap_IncreaseDecreaseInDeposits
Net (decrease) increase in short-term borrowings	(2,238)	157,236	29,108
Repurchase of preferred stock	(2)	(131)	(2)
Purchase of common stock for treasury	(194)	(229)	(557)
Proceeds from stock options exercised	667	448	69
Excess tax (expense) benefit on share-based compensation, net		(118)	97
Cash dividends paid to preferred shareholders	(1,463)	(1,468)	(1,474)
Cash dividends paid to common shareholders	(10,521)us-gaap_PaymentsOfDividendsCommonStock	(9,750)us-gaap_PaymentsOfDividendsCommonStock	(7,392)us-gaap_PaymentsOfDividendsCommonStock
Net cash provided by financing activities	116,720	204,250	63,225
Net increase in cash and cash equivalents	(1,541)	(744)	2,853
Cash and cash equivalents, beginning of period	59,692	60,436	57,583
Cash and cash equivalents, end of period	$ 58,151	$ 59,692	$ 60,436

The sum of the periodic adjustments of the differences between securities' face values and purchase prices that are charged against earnings. This is called accretion if the security was purchased at a discount and amortization if it was purchased at premium. As a noncash item, this element is an adjustment to net income when calculating cash provided by or used in operations using the indirect method.

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