Loans - Schedule of Classes Of The Loan Portfolio Summarized By The Aggregate Risk Rating (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015	Mar. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 866,990	$ 852,960	$ 815,210
Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	817,828	799,176
Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	29,958	35,819
Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	19,204	17,965
Doubtful
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	127,576	117,692	91,294
Commercial and industrial | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	121,294	112,037
Commercial and industrial | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	3,941	3,744
Commercial and industrial | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	2,341	1,911
Commercial and industrial | Doubtful
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	297,055	289,899	286,227
Commercial real estate | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	264,280	252,071
Commercial real estate | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	17,510	23,421
Commercial real estate | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	15,265	14,407
Commercial real estate | Doubtful
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Commercial real estate construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	15,696	13,429	14,580
Commercial real estate construction | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	13,241	11,087
Commercial real estate construction | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	2,081	1,968
Commercial real estate construction | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	374	374
Commercial real estate construction | Doubtful
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	352,044	357,228	353,730
Residential mortgage | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	345,633	350,537
Residential mortgage | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	5,316	5,548
Residential mortgage | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	1,095	1,143
Residential mortgage | Doubtful
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	60,272	60,124	54,564
Home equity lines of credit | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	59,033	58,856
Home equity lines of credit | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	1,110	1,138
Home equity lines of credit | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	129	130
Home equity lines of credit | Doubtful
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	14,347	14,588	$ 14,815
Consumer | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	14,347	14,588
Consumer | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Consumer | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Consumer | Doubtful
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 0	$ 0