Loans Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for Loan Losses, Beginning Balance	$ 15,574	$ 15,036	$ 15,570	$ 14,434
Charge-offs	(380)	(265)	(835)	(769)
Recoveries	43	78	157	221
Provision	(537)	(444)	(882)	(1,407)
Allowance for Loan Losses, Ending Balance	15,774	15,293	15,774	15,293
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Allowance for loan losses - Loans Individually Evaluated for Impairment	135	82	135	82	$ 109
Allowance for loan losses - Loans Collectively Evaluated for Impairment	15,639	15,211	15,639	15,211	15,461
Ending Loan Balance - Individually Evaluated for Impairment	4,176	4,017	4,176	4,017	4,341
Ending Loan Balance - Collectively Evaluated for Impairment	1,532,749	1,377,423	1,532,749	1,377,423	1,408,927
Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for Loan Losses, Beginning Balance	1,815	2,055	2,100	1,886
Charge-offs	(15)	(26)	(46)	(192)
Recoveries	5	24	23	49
Provision	16	(90)	(256)	(400)
Allowance for Loan Losses, Ending Balance	1,821	2,143	1,821	2,143
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Allowance for loan losses - Loans Individually Evaluated for Impairment	0	0	0	0	0
Allowance for loan losses - Loans Collectively Evaluated for Impairment	1,821	2,143	1,821	2,143	2,100
Ending Loan Balance - Individually Evaluated for Impairment	164	201	164	201	494
Ending Loan Balance - Collectively Evaluated for Impairment	102,725	96,645	102,725	96,645	99,017
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for Loan Losses, Beginning Balance	3,932	4,215	4,128	3,962
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision	(100)	64	(96)	(189)
Allowance for Loan Losses, Ending Balance	4,032	4,151	4,032	4,151
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Allowance for loan losses - Loans Individually Evaluated for Impairment	0	0	0	0	0
Allowance for loan losses - Loans Collectively Evaluated for Impairment	4,032	4,151	4,032	4,151	4,128
Ending Loan Balance - Individually Evaluated for Impairment	2,371	1,493	2,371	1,493	1,492
Ending Loan Balance - Collectively Evaluated for Impairment	371,301	339,115	371,301	339,115	338,620
Consumer Loans Financing [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for Loan Losses, Beginning Balance	5,416	4,680	5,210	4,478
Charge-offs	(150)	(193)	(483)	(486)
Recoveries	38	54	134	172
Provision	(225)	(249)	(668)	(626)
Allowance for Loan Losses, Ending Balance	5,529	4,790	5,529	4,790
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Allowance for loan losses - Loans Individually Evaluated for Impairment	0	0	0	0	0
Allowance for loan losses - Loans Collectively Evaluated for Impairment	5,529	4,790	5,529	4,790	5,210
Ending Loan Balance - Individually Evaluated for Impairment	130	123	130	123	118
Ending Loan Balance - Collectively Evaluated for Impairment	458,790	426,843	458,790	426,843	436,923
Residential [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for Loan Losses, Beginning Balance	3,699	3,133	3,369	3,026
Charge-offs	(215)	(46)	(306)	(91)
Recoveries	0	0	0	0
Provision	(311)	(187)	(732)	(339)
Allowance for Loan Losses, Ending Balance	3,795	3,274	3,795	3,274
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Allowance for loan losses - Loans Individually Evaluated for Impairment	135	82	135	82	109
Allowance for loan losses - Loans Collectively Evaluated for Impairment	3,660	3,192	3,660	3,192	3,260
Ending Loan Balance - Individually Evaluated for Impairment	1,511	2,200	1,511	2,200	2,237
Ending Loan Balance - Collectively Evaluated for Impairment	599,933	514,820	599,933	514,820	534,367
Unallocated [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for Loan Losses, Beginning Balance	712	953	763	1,082
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision	(115)	(18)	(166)	(147)
Allowance for Loan Losses, Ending Balance	597	935	597	935
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Allowance for loan losses - Loans Individually Evaluated for Impairment	0	0	0	0	0
Allowance for loan losses - Loans Collectively Evaluated for Impairment	597	935	597	935	763
Ending Loan Balance - Individually Evaluated for Impairment	0	0	0	0	0
Ending Loan Balance - Collectively Evaluated for Impairment	$ 0	$ 0	$ 0	$ 0	$ 0