Loans and Allowance for Loan and Lease Losses (Impaired Loans by Loan Portfolio Class) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Commercial and industrial [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans with No Allowance: Recorded Investment	$ 195	$ 185
Impaired Loans with No Allowance: Unpaid Principal Balance	679	671
Impaired Loans with Allowance: Recorded Investment	74	115
Impaired Loans with Allowance: Unpaid Principal Balance	201	243
Impaired Loans with Allowance: Related Allowance	66	42
Impaired Loans: Total Recorded Investment	269	300
Impaired Loans: Total Unpaid Principal Balance	880	914
Commercial real estate [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans with No Allowance: Recorded Investment	2,890	2,596
Impaired Loans with No Allowance: Unpaid Principal Balance	6,230	5,898
Impaired Loans with Allowance: Recorded Investment	7,124	7,649
Impaired Loans with Allowance: Unpaid Principal Balance	7,510	7,972
Impaired Loans with Allowance: Related Allowance	1,792	1,860
Impaired Loans: Total Recorded Investment	10,014	10,245
Impaired Loans: Total Unpaid Principal Balance	13,740	13,870
Residential mortgage [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans with No Allowance: Recorded Investment	260	266
Impaired Loans with No Allowance: Unpaid Principal Balance	276	282
Impaired Loans with Allowance: Recorded Investment		25
Impaired Loans with Allowance: Unpaid Principal Balance		25
Impaired Loans with Allowance: Related Allowance		25
Impaired Loans: Total Recorded Investment	260	291
Impaired Loans: Total Unpaid Principal Balance	276	307
Home equity [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans with No Allowance: Recorded Investment	26	27
Impaired Loans with No Allowance: Unpaid Principal Balance	785	792
Impaired Loans with Allowance: Recorded Investment	45	49
Impaired Loans with Allowance: Unpaid Principal Balance	45	49
Impaired Loans with Allowance: Related Allowance	8	6
Impaired Loans: Total Recorded Investment	71	76
Impaired Loans: Total Unpaid Principal Balance	$ 830	$ 841

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Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 14A

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953550-111524

+ Details

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- Definition

Amount of allowance for credit losses related to recorded investment.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 15

-Subparagraph (a)(3)

-URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524

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- Definition

Amount of unpaid principal balance of impaired financing receivables with related allowance for credit losses and without related allowance for credit losses.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 15

-Subparagraph (a)(4)

-URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524

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Amount of investment in impaired financing receivables for which there is no related allowance for credit losses.

+ References

+ Details

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- Definition

Amount of unpaid principal balance of impaired financing receivables for which there is no related allowance for credit losses.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 15

-Subparagraph (a)(4)

-URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524

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Amount of investment in impaired financing receivables for which there is a related allowance for credit losses.

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- Definition

Unpaid principal balance of impaired financing receivables for which there is a related allowance for credit losses.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 15

-Subparagraph (a)(4)

-URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524

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