Loans and Allowance for Loan Losses (Summary of All Troubled Debt Restructuring Loans (Accruing and Non Accruing) by Portfolio Segment) (Details)	12 Months Ended
Dec. 31, 2015 USD ($) loan	Dec. 31, 2014 USD ($) loan	Dec. 31, 2013 USD ($) loan
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Number Of Contracts Outstanding \| loan	38	41
Financing Receivable, Modifications, Recorded Investment	$ 5,277,000	$ 5,943,000
Specific Reserve	$ 603,000	$ 645,000
Number of Contracts	1	6	14
Pre-Modification Outstanding Recorded Investment	$ 74,000	$ 488,000	$ 1,656,000
Post-Modification Outstanding Recorded Investment	78,000	491,000	1,694,000
Specific Reserve	$ 27,000	$ 49,000	$ 114,000
Number of contracts that subsequently defaulted	0	0	1
Recorded investment of troubled-debt restructurings that subsequently defaulted	$ 0	$ 0	$ 113,000
Commercial Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Number Of Contracts Outstanding \| loan	9	9
Financing Receivable, Modifications, Recorded Investment	$ 399,000	$ 426,000
Specific Reserve	$ 11,000	$ 10,000
Home Equity Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Number Of Contracts Outstanding \| loan	1	1
Financing Receivable, Modifications, Recorded Investment	$ 21,000	$ 29,000
Specific Reserve	$ 0	$ 0
Residential Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Number Of Contracts Outstanding \| loan	22	24
Financing Receivable, Modifications, Recorded Investment	$ 3,398,000	$ 3,786,000
Specific Reserve	$ 544,000	$ 635,000
Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Number Of Contracts Outstanding \| loan	6	7
Financing Receivable, Modifications, Recorded Investment	$ 1,459,000	$ 1,702,000
Specific Reserve	$ 48,000	$ 0
Number of contracts that subsequently defaulted \| loan	0	0	1
Recorded investment of troubled-debt restructurings that subsequently defaulted	$ 0	$ 0	$ 113,000
Extended Maturity [Member] \| Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	1	3
Pre-Modification Outstanding Recorded Investment	$ 0	$ 235,000	$ 466,000
Post-Modification Outstanding Recorded Investment	0	235,000	462,000
Specific Reserve	$ 0	$ 0	$ 0
Extended Maturity [Member] \| Residential Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	1	2
Pre-Modification Outstanding Recorded Investment	$ 0	$ 136,000	$ 200,000
Post-Modification Outstanding Recorded Investment	0	149,000	213,000
Specific Reserve	$ 0	$ 43,000	$ 0
Extended Maturity [Member] \| Commercial Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0	4
Pre-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 335,000
Post-Modification Outstanding Recorded Investment	0	0	335,000
Specific Reserve	$ 0	$ 0	$ 0
Contractual Interest Rate Reduction [Member] \| Residential Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0	4
Pre-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 636,000
Post-Modification Outstanding Recorded Investment	0	0	665,000
Specific Reserve	$ 0	$ 0	$ 114,000
Contractual Interest Rate Reduction [Member] \| Commercial Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0	1
Pre-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 19,000
Post-Modification Outstanding Recorded Investment	0	0	19,000
Specific Reserve	$ 0	$ 0	$ 0
Court Order [Member] \| Residential Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	1	0	0
Pre-Modification Outstanding Recorded Investment	$ 74,000	$ 0	$ 0
Post-Modification Outstanding Recorded Investment	78,000	0	0
Specific Reserve	$ 27,000	$ 0	$ 0
Court Order [Member] \| Commercial Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	3	0
Pre-Modification Outstanding Recorded Investment	$ 0	$ 77,000	$ 0
Post-Modification Outstanding Recorded Investment	0	77,000	0
Specific Reserve	$ 0	$ 6,000	$ 0
Principal Forgiveness [Member] \| Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0	0
Pre-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 0
Post-Modification Outstanding Recorded Investment	0	0	0
Specific Reserve	$ 0	$ 0	$ 0
Principal Forgiveness [Member] \| Home Equity Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	1	0
Pre-Modification Outstanding Recorded Investment	$ 0	$ 40,000	$ 0
Post-Modification Outstanding Recorded Investment	0	30,000	0
Specific Reserve	$ 0	$ 0	$ 0

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-SubTopic 10
-Section 50
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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
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-Section 50
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