Loans - Schedule of Nonaccrual Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Nonaccrual loans
Total nonaccrual loans	$ 4,863	$ 2,638
Commercial
Nonaccrual loans
Total nonaccrual loans	4,418	2,202
Real estate - mortgage
Nonaccrual loans
Total nonaccrual loans	303	269
Consumer
Nonaccrual loans
Total nonaccrual loans	142	167
Manufacturing | Commercial
Nonaccrual loans
Total nonaccrual loans		2
Finance and insurance | Commercial
Nonaccrual loans
Total nonaccrual loans	19	25
Health care | Commercial
Nonaccrual loans
Total nonaccrual loans	304
Construction | Commercial
Nonaccrual loans
Total nonaccrual loans	1,006	234
Commercial - Other | Commercial
Nonaccrual loans
Total nonaccrual loans	3,089	1,941
Residential and commercial owner-occupied | Real estate - mortgage
Nonaccrual loans
Total nonaccrual loans	$ 303	$ 269