Loans and Allowance for Loan and Lease Losses (Impaired Loans by Loan Portfolio Class) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Residential mortgages [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans with Allowance: Recorded Investment	$ 31
Impaired Loans with Allowance: Unpaid Principal Balance	32
Impaired Loans with Allowance: Related Allowance	23
Impaired Loans: Total Recorded Investment	1,391	1,146
Impaired Loans: Total Unpaid Principal Balance	1,468	1,286
Commercial and industrial [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans with Allowance: Recorded Investment	580	223
Impaired Loans with Allowance: Unpaid Principal Balance	591	231
Impaired Loans with Allowance: Related Allowance	223	137
Impaired Loans: Total Recorded Investment	882	618
Impaired Loans: Total Unpaid Principal Balance	927	661
Commercial real estate [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans with Allowance: Recorded Investment	5,163	6,954
Impaired Loans with Allowance: Unpaid Principal Balance	5,380	7,255
Impaired Loans with Allowance: Related Allowance	1,103	1,382
Impaired Loans: Total Recorded Investment	8,733	8,925
Impaired Loans: Total Unpaid Principal Balance	11,508	11,736
Home Equity/ Home Equity Lines of Credit [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans with Allowance: Recorded Investment	206	211
Impaired Loans with Allowance: Unpaid Principal Balance	208	213
Impaired Loans with Allowance: Related Allowance	139	115
Impaired Loans: Total Recorded Investment	267	240
Impaired Loans: Total Unpaid Principal Balance	285	301
Acquired with Credit Deterioration [Member] \| Residential mortgages [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans with No Allowance: Recorded Investment	425
Impaired Loans with No Allowance: Unpaid Principal Balance	425
Acquired with Credit Deterioration [Member] \| Commercial and industrial [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans with No Allowance: Recorded Investment	272
Impaired Loans with No Allowance: Unpaid Principal Balance	272
Acquired with Credit Deterioration [Member] \| Commercial real estate [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans with No Allowance: Recorded Investment	1,675
Impaired Loans with No Allowance: Unpaid Principal Balance	1,675
Acquired with Credit Deterioration [Member] \| Home Equity/ Home Equity Lines of Credit [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans with No Allowance: Recorded Investment	21
Impaired Loans with No Allowance: Unpaid Principal Balance	21
Excluded Acquired with Credit Deterioration [Member] \| Residential mortgages [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans with No Allowance: Recorded Investment	935	1,146
Impaired Loans with No Allowance: Unpaid Principal Balance	1,011	1,286
Excluded Acquired with Credit Deterioration [Member] \| Commercial and industrial [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans with No Allowance: Recorded Investment	30	395
Impaired Loans with No Allowance: Unpaid Principal Balance	64	430
Excluded Acquired with Credit Deterioration [Member] \| Commercial real estate [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans with No Allowance: Recorded Investment	1,895	1,971
Impaired Loans with No Allowance: Unpaid Principal Balance	4,453	4,481
Excluded Acquired with Credit Deterioration [Member] \| Home Equity/ Home Equity Lines of Credit [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans with No Allowance: Recorded Investment	40	29
Impaired Loans with No Allowance: Unpaid Principal Balance	$ 56	$ 88

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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=35738203&loc=SL6953550-111524

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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=35738203&loc=d3e5212-111524

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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=35738203&loc=d3e5212-111524

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+ References

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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=35738203&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=35738203&loc=d3e5212-111524

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