Loans and Related Allowance for Loan Losses (Narrative) (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2015 USD ($) loan	Jun. 30, 2015 USD ($)	Sep. 30, 2015 USD ($) loan	Sep. 30, 2014 USD ($) loan	Dec. 31, 2014 USD ($)	Jun. 30, 2014 USD ($)	Dec. 31, 2013 USD ($)
Financing Receivable, Modifications [Line Items]
Commercial amount benchmark minimum for internal annual review			$ 500,000
Commercial amount benchmark minimum for annual review by independent reviewer			1,000,000
Commercial amount benchmark minimum criticized relationships for annual review by independent reviewer			500,000
Commerical amount benchmark internal impairment review			500,000
Commerical amount benchmark internal impairment review minimum relationship amount			750,000
Commercial amount benchmark to require external appraisal			500,000
Nonaccrual loans subject to partial charge off	$ 11,776,000		11,776,000		$ 11,551,000
Reduction of the ALL resulting			5,744	$ 1,055
Loans in process of foreclosure	2,400,000		2,400,000		1,900,000
Total allowance for loan losses	12,211,000	$ 11,809,000	12,211,000	$ 12,068,000	12,065,000	$ 12,463,000	$ 13,594,000
Partial Charge Off [Member]
Financing Receivable, Modifications [Line Items]
Nonaccrual loans subject to partial charge off	5,100,000		$ 5,100,000		4,600,000
New TDR [Member]
Financing Receivable, Modifications [Line Items]
Financing receivable, modifications, number of contracts | loan			8	2
Pre Existing TDR Loans Remodified After Maturity [Member]
Financing Receivable, Modifications [Line Items]
Financing receivable, modifications, number of contracts | loan			10	5
Acquisition and Development (A&D) TDR [Member]
Financing Receivable, Modifications [Line Items]
Financing receivable, modifications, subsequent default, recorded investment				$ 1,700,000
Commerical Real Estate TDR [Member]
Financing Receivable, Modifications [Line Items]
Financing receivable, modifications, subsequent default, recorded investment				400,000
Commerical and Industrial TDR [Member]
Financing Receivable, Modifications [Line Items]
Financing receivable, modifications, subsequent default, recorded investment				$ 200,000
Unallocated [Member]
Financing Receivable, Modifications [Line Items]
Total allowance for loan losses	$ 500,000		$ 500,000
Residential Mortgage [Member]
Financing Receivable, Modifications [Line Items]
Financing receivable, modifications, subsequent default, number of contracts | loan	1
Financing receivable, modifications, subsequent default, recorded investment		$ 70,000
Commercial real estate- non owner-occupied [Member]
Financing Receivable, Modifications [Line Items]
Nonaccrual loans subject to partial charge off	$ 1,499,000		$ 1,499,000		$ 1,152,000