Fair Value Of Financial Instruments (Fair Value Of Financial Instruments) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	$ 77,228	$ 37,812	$ 74,026	$ 74,546
Securities available for sale	508,681	511,751
Securities held to maturity	407	558
FHLB stock	8,145	8,630
Loans, net of allowance for loan losses	1,071,361	1,017,007
Total assets	1,708,550	1,611,869
Deposits	1,271,080	1,177,880
Securities sold under agreements to repurchase	287,520	262,527
Other long-term debt	2,483	22,562
Junior subordinated debentures issued to unconsolidated subsidiary trust	20,619	20,619
Total liabilities	1,590,329	1,502,332
Carrying Amount [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	77,228	37,812
Securities available for sale	508,681	511,751
Securities held to maturity	407	558
FHLB stock	8,145	8,630
Loans, net of allowance for loan losses	1,071,361	1,017,007
Interest rate contract-cash flow hedge	552	207
Accrued interest receivable	4,368	5,121
Total assets	1,670,742	1,581,086
Deposits	1,271,080	1,177,880
Short-term borrowings	0	0
Securities sold under agreements to repurchase	287,520	262,527
Other long-term debt	2,483	22,562
Junior subordinated debentures issued to unconsolidated subsidiary trust	20,619	20,619
Interest rate contract-cash flow hedge	1,610	1,613
Accrued interest payable	195	282
Total liabilities	1,583,507	1,485,483
Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	77,228	37,812
Securities available for sale	508,681	511,751
Securities held to maturity	454	624
FHLB stock	8,145	8,630
Loans, net of allowance for loan losses	1,096,188	1,035,131
Interest rate contract-cash flow hedge	552	207
Accrued interest receivable	4,368	5,121
Total assets	1,695,616	1,599,276
Deposits	1,273,573	1,181,066
Short-term borrowings	0	0
Securities sold under agreement to repurchase	287,837	263,062
Other long-term debt	2,502	23,594
Junior subordinated debentures issued to unconsolidated subsidiary trust	15,177	15,268
Interest rate contract-cash flow hedge	1,610	1,613
Accrued interest payable	195	282
Total liabilities	1,580,894	1,484,885
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	77,228	37,812
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	77,228	37,812
Deposits	940,682	829,632
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	940,682	829,632
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	508,681	511,751
Securities held to maturity	454	624
FHLB stock	8,145	8,630
Loans, net of allowance for loan losses	0	0
Interest rate contract-cash flow hedge	552	207
Accrued interest receivable	4,368	5,121
Total assets	522,200	526,333
Deposits	332,891	351,434
Short-term borrowings	0	0
Securities sold under agreement to repurchase	287,837	263,062
Other long-term debt	2,502	23,594
Junior subordinated debentures issued to unconsolidated subsidiary trust	15,177	15,268
Interest rate contract-cash flow hedge	1,610	1,613
Accrued interest payable	195	282
Total liabilities	640,212	655,253
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	1,096,188	1,035,131
Interest rate contract-cash flow hedge	0	0
Accrued interest receivable	0	0
Total assets	1,096,188	1,035,131
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