Loans And The Allowance For Loan Losses (Narrative) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired loans with no related allowance recorded	$ 10,713,000		$ 10,560,000
Loans restructured in troubled debt restructurings	5,726,000		5,767,000
Troubled debt restructurings in non-accrual status	$ 1,111,000		1,812,000
Period of timely payments before reversion to accruing status	6 months
Commitments to lend additional funds to debtors owing on loans whose terms have been modified in TDRs	$ 0
Residential Real Estate: Residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgages sold to FNMA	900,000	$ 2,600,000
Unpaid principal balance	75,800,000		77,300,000
Mortgage servicing rights	500,000		600,000
Mortgage loans held-for-sale	0		500,000
Impaired loans with no related allowance recorded	2,427,000		2,444,000
Loans restructured in troubled debt restructurings	1,869,000		1,789,000
Troubled debt restructurings in non-accrual status	124,000		689,000
Commercial Real Estate: Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage loans held-for-sale	0		0
Impaired loans with no related allowance recorded	3,999,000		3,888,000
Loans restructured in troubled debt restructurings	1,702,000		1,732,000
Troubled debt restructurings in non-accrual status	327,000		334,000
Commercial And Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired loans with no related allowance recorded	1,908,000		1,750,000
Loans restructured in troubled debt restructurings	533,000		517,000
Troubled debt restructurings in non-accrual status	$ 481,000		$ 508,000