Loans - Summary of the Loan Portfolio by Loan Type and Credit Quality Classification (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Summary of the Loan Portfolio by Loan Type and Credit Quality Classification
Total	$ 1,464,855	$ 1,359,458
Nonclassified
Summary of the Loan Portfolio by Loan Type and Credit Quality Classification
Total	1,442,357	1,340,826
Classified
Summary of the Loan Portfolio by Loan Type and Credit Quality Classification
Total	22,498	18,632
Commercial
Summary of the Loan Portfolio by Loan Type and Credit Quality Classification
Total	610,385	556,522
Commercial | Nonclassified
Summary of the Loan Portfolio by Loan Type and Credit Quality Classification
Total	594,610	547,536
Commercial | Classified
Summary of the Loan Portfolio by Loan Type and Credit Quality Classification
Total	15,775	8,986
Real estate
Summary of the Loan Portfolio by Loan Type and Credit Quality Classification
Total	834,433	786,926
Consumer
Summary of the Loan Portfolio by Loan Type and Credit Quality Classification
Total	20,037	16,010
Consumer | Nonclassified
Summary of the Loan Portfolio by Loan Type and Credit Quality Classification
Total	19,882	15,705
Consumer | Classified
Summary of the Loan Portfolio by Loan Type and Credit Quality Classification
Total	155	305
Commercial | Real estate
Summary of the Loan Portfolio by Loan Type and Credit Quality Classification
Total	619,539	625,665
Commercial | Real estate | Nonclassified
Summary of the Loan Portfolio by Loan Type and Credit Quality Classification
Total	614,270	617,865
Commercial | Real estate | Classified
Summary of the Loan Portfolio by Loan Type and Credit Quality Classification
Total	5,269	7,800
Land and construction | Real estate
Summary of the Loan Portfolio by Loan Type and Credit Quality Classification
Total	103,710	84,428
Land and construction | Real estate | Nonclassified
Summary of the Loan Portfolio by Loan Type and Credit Quality Classification
Total	103,503	84,209
Land and construction | Real estate | Classified
Summary of the Loan Portfolio by Loan Type and Credit Quality Classification
Total	207	219
Home equity | Real estate
Summary of the Loan Portfolio by Loan Type and Credit Quality Classification
Total	78,332	76,833
Home equity | Real estate | Nonclassified
Summary of the Loan Portfolio by Loan Type and Credit Quality Classification
Total	77,240	75,511
Home equity | Real estate | Classified
Summary of the Loan Portfolio by Loan Type and Credit Quality Classification
Total	1,092	$ 1,322
Residential mortgages | Real estate
Summary of the Loan Portfolio by Loan Type and Credit Quality Classification
Total	32,852
Residential mortgages | Real estate | Nonclassified
Summary of the Loan Portfolio by Loan Type and Credit Quality Classification
Total	$ 32,852