Loans - Summary of the Loan Portfolio by Loan Type and Credit Quality Classification (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Loans
Total	$ 1,450,801	$ 1,359,458
Nonclassified
Loans
Total	1,432,400	1,340,826
Classified
Loans
Total	18,401	18,632
Commercial
Loans
Total	606,281	556,522
Commercial | Nonclassified
Loans
Total	591,554	547,536
Commercial | Classified
Loans
Total	14,727	8,986
Real estate
Loans
Total	826,192	786,926
Consumer
Loans
Total	18,328	16,010
Consumer | Nonclassified
Loans
Total	18,311	15,705
Consumer | Classified
Loans
Total	17	305
Commercial | Real estate
Loans
Total	612,030	625,665
Commercial | Real estate | Nonclassified
Loans
Total	609,179	617,865
Commercial | Real estate | Classified
Loans
Total	2,851	7,800
Land and construction | Real estate
Loans
Total	88,371	84,428
Land and construction | Real estate | Nonclassified
Loans
Total	88,170	84,209
Land and construction | Real estate | Classified
Loans
Total	201	219
Home equity | Real estate
Loans
Total	76,536	76,833
Home equity | Real estate | Nonclassified
Loans
Total	75,931	75,511
Home equity | Real estate | Classified
Loans
Total	605	$ 1,322
Residential mortgages | Real estate
Loans
Total	49,255
Residential mortgages | Real estate | Nonclassified
Loans
Total	$ 49,255