Loans (Nonaccrual and Past Due Loans) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans	$ 18,293	$ 21,325
Loans 90 Days Past Due and Accruing	3,006	3,771
Originated Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans	14,110	16,774
Loans 90 Days Past Due and Accruing	1,127	193
Originated Loan | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans	8,137	9,934
Loans 90 Days Past Due and Accruing	0	0
Originated Loan | Commercial real estate, construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans	819	826
Loans 90 Days Past Due and Accruing	0	0
Originated Loan | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans	8,956	10,760
Loans 90 Days Past Due and Accruing	0	0
Originated Loan | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans	1,251	1,712
Loans 90 Days Past Due and Accruing	848	0
Originated Loan | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans	3,380	3,778
Loans 90 Days Past Due and Accruing	142	183
Originated Loan | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans	310	383
Loans 90 Days Past Due and Accruing	76	0
Originated Loan | Consumer, indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans	211	130
Loans 90 Days Past Due and Accruing	61	10
Originated Loan | Consumer, other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans	2	11
Loans 90 Days Past Due and Accruing	0	0
Originated Loan | Consumer, other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans	213	141
Loans 90 Days Past Due and Accruing	61	10
Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans	4,183	4,551
Loans 90 Days Past Due and Accruing	1,879	3,578
Acquired Loans | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans	1,314	1,609
Loans 90 Days Past Due and Accruing	456	1,506
Acquired Loans | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans	298	390
Loans 90 Days Past Due and Accruing	510	387
Acquired Loans | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans	2,338	2,317
Loans 90 Days Past Due and Accruing	878	1,672
Acquired Loans | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans	230	231
Loans 90 Days Past Due and Accruing	35	0
Acquired Loans | Consumer, indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans	0	0
Loans 90 Days Past Due and Accruing	0	13
Acquired Loans | Consumer, other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans	3	4
Loans 90 Days Past Due and Accruing	0	0
Acquired Loans | Consumer, other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans	3	4
Loans 90 Days Past Due and Accruing	$ 0	$ 13