Loans (Nonaccrual and Past Due Loans) (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans	$ 16,069	$ 15,692
Loans 90 Days Past Due and Accruing	1,975	1,626
Originated Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans	13,273	12,761
Loans 90 Days Past Due and Accruing	505	614
Originated Loan | Commercial real estate, construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans	725	754
Loans 90 Days Past Due and Accruing	0	0
Originated Loan | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans	6,406	6,877
Loans 90 Days Past Due and Accruing	213	0
Originated Loan | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans	7,131	7,631
Loans 90 Days Past Due and Accruing	213	0
Originated Loan | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans	1,274	739
Loans 90 Days Past Due and Accruing	0	0
Originated Loan | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans	4,056	3,546
Loans 90 Days Past Due and Accruing	282	548
Originated Loan | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans	481	550
Loans 90 Days Past Due and Accruing	6	50
Originated Loan | Consumer, indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans	314	256
Loans 90 Days Past Due and Accruing	0	0
Originated Loan | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans	17	39
Loans 90 Days Past Due and Accruing	4	16
Originated Loan | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans	331	295
Loans 90 Days Past Due and Accruing	4	16
Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans	2,796	2,931
Loans 90 Days Past Due and Accruing	1,470	1,012
Acquired Loans | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans	252	192
Loans 90 Days Past Due and Accruing	402	215
Acquired Loans | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans	427	259
Loans 90 Days Past Due and Accruing	0	45
Acquired Loans | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans	1,846	2,168
Loans 90 Days Past Due and Accruing	1,026	730
Acquired Loans | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans	271	312
Loans 90 Days Past Due and Accruing	0	22
Acquired Loans | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans	0	0
Loans 90 Days Past Due and Accruing	$ 42	$ 0