Loans Allowance for Loan Losses (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Rollfoward of the Allowance for Loan Losses for the Quarterly Report [Roll Forward]
Allowance for Credit Losses, Beginning Balance	$ 15,570	$ 14,434	$ 15,298
Charge-offs	(1,106)	(1,021)	(1,411)
Recoveries	227	309	347
Provision	1,347	1,848	200
Allowance for Credit Losses, Ending Balance	16,038	15,570	14,434
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Allowance for Loan Losses - Individually Evaluated for Impairment	0	109
Allowance for Loan Losses - Collectively Evaluated for Impairment	16,038	15,461
Ending Loan Balance - Individually Evaluated for Impairment	3,286	4,341
Ending Loan Balance - Collectively Evaluated for Impairment	1,570,666	1,408,927
Commercial [Member]
Rollfoward of the Allowance for Loan Losses for the Quarterly Report [Roll Forward]
Allowance for Credit Losses, Beginning Balance	2,100	1,886	2,344
Charge-offs	(62)	(212)	(926)
Recoveries	34	86	88
Provision	(245)	340	380
Allowance for Credit Losses, Ending Balance	1,827	2,100	1,886
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Allowance for Loan Losses - Individually Evaluated for Impairment	0	0
Allowance for Loan Losses - Collectively Evaluated for Impairment	1,827	2,100
Ending Loan Balance - Individually Evaluated for Impairment	155	494
Ending Loan Balance - Collectively Evaluated for Impairment	102,432	99,017
Commercial Real Estate [Member]
Rollfoward of the Allowance for Loan Losses for the Quarterly Report [Roll Forward]
Allowance for Credit Losses, Beginning Balance	4,128	3,962	3,651
Charge-offs	(7)	0	(11)
Recoveries	0	0	0
Provision	399	166	322
Allowance for Credit Losses, Ending Balance	4,520	4,128	3,962
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Allowance for Loan Losses - Individually Evaluated for Impairment	0	0
Allowance for Loan Losses - Collectively Evaluated for Impairment	4,520	4,128
Ending Loan Balance - Individually Evaluated for Impairment	2,372	1,492
Ending Loan Balance - Collectively Evaluated for Impairment	382,567	338,620
Other Consumer [Member]
Rollfoward of the Allowance for Loan Losses for the Quarterly Report [Roll Forward]
Allowance for Credit Losses, Beginning Balance	5,210	4,478	4,840
Charge-offs	(711)	(718)	(459)
Recoveries	193	223	259
Provision	862	1,227	(162)
Allowance for Credit Losses, Ending Balance	5,554	5,210	4,478
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Allowance for Loan Losses - Individually Evaluated for Impairment	0	0
Allowance for Loan Losses - Collectively Evaluated for Impairment	5,554	5,210
Ending Loan Balance - Individually Evaluated for Impairment	114	118
Ending Loan Balance - Collectively Evaluated for Impairment	464,409	436,923
Residential Portfolio Segment [Member]
Rollfoward of the Allowance for Loan Losses for the Quarterly Report [Roll Forward]
Allowance for Credit Losses, Beginning Balance	3,369	3,026	3,405
Charge-offs	(326)	(91)	(15)
Recoveries	0	0	0
Provision	747	434	(364)
Allowance for Credit Losses, Ending Balance	3,790	3,369	3,026
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Allowance for Loan Losses - Individually Evaluated for Impairment	0	109
Allowance for Loan Losses - Collectively Evaluated for Impairment	3,790	3,260
Ending Loan Balance - Individually Evaluated for Impairment	645	2,237
Ending Loan Balance - Collectively Evaluated for Impairment	621,258	534,367
Unallocated [Member]
Rollfoward of the Allowance for Loan Losses for the Quarterly Report [Roll Forward]
Allowance for Credit Losses, Beginning Balance	763	1,082	1,058
Charge-offs	0	0	0
Recoveries	0	0	0
Provision	(416)	(319)	24
Allowance for Credit Losses, Ending Balance	347	763	$ 1,082
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Allowance for Loan Losses - Individually Evaluated for Impairment	0	0
Allowance for Loan Losses - Collectively Evaluated for Impairment	347	763
Ending Loan Balance - Individually Evaluated for Impairment	0	0
Ending Loan Balance - Collectively Evaluated for Impairment	$ 0	$ 0

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A valuation allowance for financing receivables that are expected to be uncollectible.

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Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

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Amount of recovery of financing receivables doubtful of collection that were previously charged off.

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

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The balance of financing receivables that were collectively evaluated for impairment.

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Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value.

+ 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)(2)
-URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953423-111524

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.11)
-URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

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