Fair Value Of Financial Instruments (Fair Value Of Financial Instruments) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2012	Dec. 31, 2011
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	$ 43,023	$ 77,228	$ 44,164	$ 37,812
Securities available for sale	507,994	508,681
Securities held to maturity	366	407
FHLB stock	7,496	8,145
Loans, net of allowance for loan losses	1,089,917	1,071,361
Total assets	1,692,596	1,708,550
Deposits	1,269,777	1,271,080
Short-term borrowings	30,900	0
Securities sold under agreements to repurchase	243,204	287,520
Other long-term debt	2,463	2,483
Junior subordinated debentures issued to unconsolidated subsidiary trust	20,619	20,619
Total liabilities	1,573,442	1,590,329
Carrying Amount [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	43,023	77,228
Securities available for sale	507,994	508,681
Securities held to maturity	366	407
FHLB stock	7,496	8,145
Loans, net of allowance for loan losses	1,089,917	1,071,361
Interest rate contract-cash flow hedge	478	552
Accrued interest receivable	5,280	4,368
Total assets	1,654,554	1,670,742
Deposits	1,269,777	1,271,080
Short-term borrowings	30,900	0
Securities sold under agreements to repurchase	243,204	287,520
Other long-term debt	2,463	2,483
Junior subordinated debentures issued to unconsolidated subsidiary trust	20,619	20,619
Interest rate contract-cash flow hedge	1,461	1,610
Accrued interest payable	191	195
Total liabilities	1,568,615	1,583,507
Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	43,023	77,228
Securities available for sale	507,994	508,681
Securities held to maturity	403	454
FHLB stock	7,496	8,145
Loans, net of allowance for loan losses	1,106,770	1,096,188
Interest rate contract-cash flow hedge	478	552
Accrued interest receivable	5,280	4,368
Total assets	1,671,444	1,695,616
Deposits	1,272,021	1,273,573
Short-term borrowings	30,900	0
Securities sold under agreement to repurchase	243,371	287,837
Other long-term debt	2,468	2,502
Junior subordinated debentures issued to unconsolidated subsidiary trust	15,449	15,177
Interest rate contract-cash flow hedge	1,461	1,610
Accrued interest payable	191	195
Total liabilities	1,565,861	1,580,894
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	43,023	77,228
Securities available for sale	0	0
Securities held to maturity	0	0
FHLB stock	0	0
Loans, net of allowance for loan losses	0	0
Interest rate contract-cash flow hedge	0	0
Accrued interest receivable	0	0
Total assets	43,023	77,228
Deposits	934,681	940,682
Short-term borrowings	0	0
Securities sold under agreement to repurchase	0	0
Other long-term debt	0	0
Junior subordinated debentures issued to unconsolidated subsidiary trust	0	0
Interest rate contract-cash flow hedge	0	0
Accrued interest payable	0	0
Total liabilities	934,681	940,682
Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	0	0
Securities available for sale	507,994	508,681
Securities held to maturity	403	454
FHLB stock	7,496	8,145
Loans, net of allowance for loan losses	0	0
Interest rate contract-cash flow hedge	478	552
Accrued interest receivable	1,454	1,366
Total assets	517,825	519,198
Deposits	337,340	332,891
Short-term borrowings	30,900	0
Securities sold under agreement to repurchase	243,371	287,837
Other long-term debt	2,468	2,502
Junior subordinated debentures issued to unconsolidated subsidiary trust	15,449	15,177
Interest rate contract-cash flow hedge	1,461	1,610
Accrued interest payable	191	195
Total liabilities	631,180	640,212
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	0	0
Securities available for sale	0	0
Securities held to maturity	0	0
FHLB stock	0	0
Loans, net of allowance for loan losses	1,106,770	1,096,188
Interest rate contract-cash flow hedge	0	0
Accrued interest receivable	3,826	3,002
Total assets	1,110,596	1,099,190
Deposits	0	0
Short-term borrowings	0	0
Securities sold under agreement to repurchase	0	0
Other long-term debt	0	0
Junior subordinated debentures issued to unconsolidated subsidiary trust	0	0
Interest rate contract-cash flow hedge	0	0
Accrued interest payable	0	0
Total liabilities	$ 0	$ 0