Loans (Troubled Debt Restructurings) (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016 USD ($) contract	Sep. 30, 2015 USD ($) contract	Sep. 30, 2016 USD ($) contract	Sep. 30, 2015 USD ($) contract
Commercial real estate
Financing Receivable, Modifications [Line Items]
Total Recorded Investment				$ 128
Financing Receivable Modifications Number Of Contracts During Period | contract				2
Financing Receivable Modifications Pre Modification Recorded Investment During Period				$ 128
Financing Receivable Modifications Post Modification Recorded Investment During Period				$ 128
Originated Loan
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | contract			2	0
Total Recorded Investment	$ 210	$ 13,967	$ 1,090	$ 14,372
Financing Receivable Modifications Number Of Contracts During Period | contract			29	25
Financing Receivable Modifications Pre Modification Recorded Investment During Period			$ 1,122	$ 14,487
Financing Receivable Modifications Post Modification Recorded Investment During Period			1,130	14,483
Financing Receivable, Modifications, Number of Contracts | contract	15	12
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 210	$ 13,980
Financing Receivable, Modifications, Post-Modification Recorded Investment	210	13,980
Financing Receivable, Modifications, Subsequent Default, Recorded Investment			$ 416	$ 0
Financing Receivable, Modifications, Subsequent Default, Determination of Allowance for Credit Losses			0	0
Originated Loan | Commercial real estate
Financing Receivable, Modifications [Line Items]
Total Recorded Investment		$ 128	$ 56
Financing Receivable Modifications Number Of Contracts During Period | contract		2	1
Financing Receivable Modifications Pre Modification Recorded Investment During Period		$ 128	$ 57
Financing Receivable Modifications Post Modification Recorded Investment During Period		128	$ 57
Originated Loan | Commercial real estate
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | contract			1	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment			$ 243	$ 0
Financing Receivable, Modifications, Subsequent Default, Determination of Allowance for Credit Losses			0	0
Originated Loan | Residential real estate
Financing Receivable, Modifications [Line Items]
Total Recorded Investment	$ 75	$ 73	$ 173	$ 167
Financing Receivable Modifications Number Of Contracts During Period | contract		2	5	4
Financing Receivable Modifications Pre Modification Recorded Investment During Period		$ 73	$ 173	$ 257
Financing Receivable Modifications Post Modification Recorded Investment During Period		73	173	256
Financing Receivable, Modifications, Number of Contracts | contract	2
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 75
Financing Receivable, Modifications, Post-Modification Recorded Investment	75
Originated Loan | Home equity lines of credit
Financing Receivable, Modifications [Line Items]
Total Recorded Investment	$ 23	$ 77	$ 23	$ 378
Financing Receivable Modifications Number Of Contracts During Period | contract	3		3	11
Financing Receivable Modifications Pre Modification Recorded Investment During Period	$ 23		$ 23	$ 387
Financing Receivable Modifications Post Modification Recorded Investment During Period	23		23	387
Financing Receivable, Modifications, Number of Contracts | contract		2
Financing Receivable, Modifications, Pre-Modification Recorded Investment		$ 78
Financing Receivable, Modifications, Post-Modification Recorded Investment		78
Originated Loan | Consumer, indirect
Financing Receivable, Modifications [Line Items]
Total Recorded Investment	$ 78	$ 31	$ 107	$ 41
Financing Receivable Modifications Number Of Contracts During Period | contract			9	4
Financing Receivable Modifications Pre Modification Recorded Investment During Period			$ 107	$ 45
Financing Receivable Modifications Post Modification Recorded Investment During Period			107	$ 42
Financing Receivable, Modifications, Number of Contracts | contract	7	2
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 78	$ 31
Financing Receivable, Modifications, Post-Modification Recorded Investment	78	31
Originated Loan | Consumer, other
Financing Receivable, Modifications [Line Items]
Total Recorded Investment	$ 34		$ 46
Financing Receivable Modifications Number Of Contracts During Period | contract			5
Financing Receivable Modifications Pre Modification Recorded Investment During Period			$ 46
Financing Receivable Modifications Post Modification Recorded Investment During Period			46
Financing Receivable, Modifications, Number of Contracts | contract	3
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 34
Financing Receivable, Modifications, Post-Modification Recorded Investment	34
Originated Loan | Consumer, other
Financing Receivable, Modifications [Line Items]
Total Recorded Investment	$ 112		$ 153
Financing Receivable Modifications Number Of Contracts During Period | contract			14
Financing Receivable Modifications Pre Modification Recorded Investment During Period			$ 153
Financing Receivable Modifications Post Modification Recorded Investment During Period			$ 153
Financing Receivable, Modifications, Number of Contracts | contract	10
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 112
Financing Receivable, Modifications, Post-Modification Recorded Investment	112
Originated Loan | Commercial and industrial
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | contract			1	0
Total Recorded Investment		$ 13,658	$ 685	$ 13,658
Financing Receivable Modifications Number Of Contracts During Period | contract		4		4
Financing Receivable Modifications Pre Modification Recorded Investment During Period		$ 13,670		$ 13,670
Financing Receivable Modifications Post Modification Recorded Investment During Period		13,670		13,670
Financing Receivable, Modifications, Number of Contracts | contract			6
Financing Receivable, Modifications, Pre-Modification Recorded Investment			$ 716
Financing Receivable, Modifications, Post-Modification Recorded Investment			724
Financing Receivable, Modifications, Subsequent Default, Recorded Investment			$ 173	$ 0
Financing Receivable, Modifications, Subsequent Default, Determination of Allowance for Credit Losses			0	0
Acquired Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | contract			0	2
Total Recorded Investment	$ 365	$ 65	$ 1,344	$ 65
Financing Receivable Modifications Number Of Contracts During Period | contract			20	3
Financing Receivable Modifications Pre Modification Recorded Investment During Period			$ 1,354	$ 66
Financing Receivable Modifications Post Modification Recorded Investment During Period			1,356	65
Financing Receivable, Modifications, Number of Contracts | contract	3	3
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 365	$ 66
Financing Receivable, Modifications, Post-Modification Recorded Investment	365	65
Financing Receivable, Modifications, Subsequent Default, Recorded Investment			0	196
Financing Receivable, Modifications, Subsequent Default, Determination of Allowance for Credit Losses, Amount			0	0
Acquired Loans | Commercial real estate
Financing Receivable, Modifications [Line Items]
Total Recorded Investment	$ 224	$ 24	$ 223	$ 24
Financing Receivable Modifications Number Of Contracts During Period | contract	1	1	1	1
Financing Receivable Modifications Pre Modification Recorded Investment During Period	$ 224	$ 24	$ 223	$ 24
Financing Receivable Modifications Post Modification Recorded Investment During Period	224	24	223	24
Acquired Loans | Residential real estate
Financing Receivable, Modifications [Line Items]
Total Recorded Investment	$ 141	$ 33	$ 923	$ 33
Financing Receivable Modifications Number Of Contracts During Period | contract			11	1
Financing Receivable Modifications Pre Modification Recorded Investment During Period			$ 927	$ 34
Financing Receivable Modifications Post Modification Recorded Investment During Period			929	33
Financing Receivable, Modifications, Number of Contracts | contract	2	1
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 141	$ 34
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 141	33
Acquired Loans | Home equity lines of credit
Financing Receivable, Modifications [Line Items]
Total Recorded Investment		$ 8	$ 173	$ 8
Financing Receivable Modifications Number Of Contracts During Period | contract			3	1
Financing Receivable Modifications Pre Modification Recorded Investment During Period			$ 179	$ 8
Financing Receivable Modifications Post Modification Recorded Investment During Period			179	$ 8
Financing Receivable, Modifications, Number of Contracts | contract		1
Financing Receivable, Modifications, Pre-Modification Recorded Investment		$ 8
Financing Receivable, Modifications, Post-Modification Recorded Investment		$ 8
Acquired Loans | Consumer, indirect
Financing Receivable, Modifications [Line Items]
Total Recorded Investment			$ 8
Financing Receivable Modifications Number Of Contracts During Period | contract			2
Financing Receivable Modifications Pre Modification Recorded Investment During Period			$ 8
Financing Receivable Modifications Post Modification Recorded Investment During Period			8
Acquired Loans | Consumer, other
Financing Receivable, Modifications [Line Items]
Total Recorded Investment			$ 17
Financing Receivable Modifications Number Of Contracts During Period | contract			3
Financing Receivable Modifications Pre Modification Recorded Investment During Period			$ 17
Financing Receivable Modifications Post Modification Recorded Investment During Period			17
Acquired Loans | Consumer, other
Financing Receivable, Modifications [Line Items]
Total Recorded Investment			$ 25
Financing Receivable Modifications Number Of Contracts During Period | contract			5
Financing Receivable Modifications Pre Modification Recorded Investment During Period			$ 25
Financing Receivable Modifications Post Modification Recorded Investment During Period			$ 25
Acquired Loans | Commercial and industrial
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | contract			0	2
Financing Receivable, Modifications, Subsequent Default, Recorded Investment			$ 0	$ 196
Financing Receivable, Modifications, Subsequent Default, Determination of Allowance for Credit Losses, Amount			$ 0	$ 0