Loans - Summary of the Loan Portfolio by Loan Type and Credit Quality Classification (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Loans
Total	$ 1,886,732	$ 1,583,177
Nonclassified
Loans
Total	1,863,323	1,558,105
Classified
Loans
Total	23,409	25,072
Commercial
Loans
Total		573,296
Commercial
Loans
Total	597,763	573,296
Commercial | Nonclassified
Loans
Total	584,845	554,913
Commercial | Classified
Loans
Total	12,918	18,383
Real estate
Loans
Total	1,276,516	997,486
Real estate | CRE
Loans
Total	994,067	772,867
Real estate | CRE | Nonclassified
Loans
Total	985,193	766,988
Real estate | CRE | Classified
Loans
Total	8,874	5,879
Real estate | Land and construction
Loans
Total	122,358	100,882
Real estate | Land and construction | Nonclassified
Loans
Total	122,358	100,763
Real estate | Land and construction | Classified
Loans
Total		119
Real estate | Home equity
Loans
Total	109,112	79,176
Real estate | Home equity | Nonclassified
Loans
Total	107,495	78,486
Real estate | Home equity | Classified
Loans
Total	1,617	690
Real estate | Residential mortgages
Loans
Total	50,979	44,561
Real estate | Residential mortgages | Nonclassified
Loans
Total	50,979	44,561
Consumer
Loans
Total	12,453	12,395
Consumer | Nonclassified
Loans
Total	$ 12,453	12,394
Consumer | Classified
Loans
Total		$ 1