Allowance For Credit Losses (Narrative) (Details)	3 Months Ended	12 Months Ended
Mar. 31, 2016 USD ($) loan	Mar. 31, 2015 USD ($) loan	Dec. 31, 2015 USD ($) loan
Financing Receivable, Modifications [Line Items]
Interest income that would have been recorded under original terms, non-accrual loans	$ 104,000	$ 135,000
Partial charge-off of loan amount	$ 97,000	$ 17,000
Commercial Mortgage [Member]
Financing Receivable, Modifications [Line Items]
Number of TDR loans \| loan	0	1	0
TDR amount		$ 2,234,000
Pre-modification recorded investment	$ 2,272,000
Post-modification recorded investment	2,272,000
Number of subsequent defaults \| loan		0
Reduction of principal	$ 0
Consumer: Home Equity [Member]
Financing Receivable, Modifications [Line Items]
Number of TDR loans \| loan	1	1	1
TDR amount	$ 102,000	$ 102,000	$ 102,000
Pre-modification recorded investment	102,000
Post-modification recorded investment	$ 102,000
Number of subsequent defaults \| loan	0	0
Monthly payment reduced period, in months	36 months
Reduction of principal	$ 0
Consumer Installment Loan [Member]
Financing Receivable, Modifications [Line Items]
Number of TDR loans \| loan	1
TDR amount	$ 40,000	$ 0	$ 0
Pre-modification recorded investment	42,000
Post-modification recorded investment	42,000
Partial charge-off of loan amount	$ 2,000
Number of subsequent defaults \| loan	0	0

Financing Receivable Modifications Recorded Investment Additions (Reductions)

No definition available.

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- Definition

Monthly Payment Period, Reduced Period

+ References

No definition available.

+ Details

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- Definition

Amount of direct write-downs of financing receivables charged against the allowance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (c)(3)
-URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953423-111524

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Number of financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953676-111524

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- Definition

Post-modification amount of investment in financing receivables modified by troubled debt restructurings.

+ References

+ Details

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- Definition

Pre-modification amount of investment in financing receivables modified by troubled debt restructurings.

+ References

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- Definition

The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 40
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=25495931&loc=d3e18845-111554

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- Definition

Number of financing receivables that have been modified by troubled debt restructurings within the previous 12 months and for which there was a payment default.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 34
-URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953682-111524

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- Definition

Reflects the amount of additional interest income that would have been recorded if impaired or nonperforming loans were instead current, in compliance with their original terms, and outstanding throughout the reporting period or since origination (if held for part of the period).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 40
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=25495931&loc=d3e18794-111554

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