Loans (Troubled Debt Restructurings) (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019 USD ($) contract	Sep. 30, 2018 USD ($) contract	Sep. 30, 2019 USD ($) contract	Sep. 30, 2018 USD ($) contract
Originated Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	15	14	35	46
Pre-Modification	$ 205	$ 770	$ 994	$ 1,917
Post-Modification	205	770	997	1,917
Remaining Recorded Investment	$ 205	$ 768	$ 965	$ 1,871
Originated Loans | Commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract			2
Pre-Modification			$ 38
Post-Modification			38
Remaining Recorded Investment			$ 34
Originated Loans | Residential real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract		3	3	9
Pre-Modification		$ 87	$ 437	$ 871
Post-Modification		87	440	871
Remaining Recorded Investment		$ 87	$ 434	$ 871
Originated Loans | Home equity lines of credit
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract		4	4	6
Pre-Modification		$ 533	$ 139	$ 565
Post-Modification		533	139	565
Remaining Recorded Investment		$ 531	$ 137	$ 562
Originated Loans | Consumer, indirect
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	15	7	23	26
Pre-Modification	$ 205	$ 150	$ 328	$ 454
Post-Modification	205	150	328	454
Remaining Recorded Investment	$ 205	$ 150	$ 312	$ 420
Originated Loans | Consumer, direct
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract			3	5
Pre-Modification			$ 52	$ 27
Post-Modification			52	27
Remaining Recorded Investment			$ 48	$ 18
Originated Loans | Consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract			26	31
Pre-Modification			$ 380	$ 481
Post-Modification			380	481
Remaining Recorded Investment			$ 360	$ 438
Acquired Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	1	4	67	21
Pre-Modification	$ 70	$ 326	$ 4,258	$ 1,448
Post-Modification	70	326	4,233	1,448
Remaining Recorded Investment	$ 70	$ 326	$ 4,120	$ 1,430
Acquired Loans | Commercial real estate, other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract			3	1
Pre-Modification			$ 101	$ 50
Post-Modification			76	50
Remaining Recorded Investment			$ 75	$ 47
Acquired Loans | Commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract			5
Pre-Modification			$ 1,557
Post-Modification			1,557
Remaining Recorded Investment			$ 1,510
Acquired Loans | Residential real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	1	3	35	15
Pre-Modification	$ 70	$ 272	$ 2,088	$ 1,258
Post-Modification	70	272	2,088	1,258
Remaining Recorded Investment	$ 70	$ 272	$ 2,037	$ 1,244
Acquired Loans | Home equity lines of credit
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract		1	8	5
Pre-Modification		$ 54	$ 172	$ 140
Post-Modification		54	172	140
Remaining Recorded Investment		$ 54	$ 168	$ 139
Acquired Loans | Consumer, direct
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract			16
Pre-Modification			$ 340
Post-Modification			340
Remaining Recorded Investment			$ 330