Loans (Loans By Risk Category) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	$ 2,402,328	$ 2,357,137
Total Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	2,402,328	2,357,137
Pass Rated (Grades 1 - 4) | Total Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	1,307,174	1,303,122
Special Mention (Grade 5) | Total Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	71,582	44,038
Substandard (Grade 6) | Total Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	44,420	46,164
Doubtful (Grade 7) | Total Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	241	216
Not Rated | Total Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	978,911	963,597
Originated Loan | Commercial real estate, construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	99,757	107,118
Originated Loan | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	627,932	595,447
Originated Loan | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	727,689	702,565
Originated Loan | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	455,243	438,051
Originated Loan | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	302,890	304,523
Originated Loan | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	87,722	88,902
Originated Loan | Consumer, indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	347,607	340,390
Originated Loan | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	414,993	407,400
Originated Loan | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	67,386	67,010
Originated Loan | Deposit account overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	543	849
Originated Loan | Total Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	1,989,080	1,942,290
Originated Loan | Pass Rated (Grades 1 - 4) | Commercial real estate, construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	92,383	100,409
Originated Loan | Pass Rated (Grades 1 - 4) | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	596,903	561,320
Originated Loan | Pass Rated (Grades 1 - 4) | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	689,286	661,729
Originated Loan | Pass Rated (Grades 1 - 4) | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	404,591	420,477
Originated Loan | Pass Rated (Grades 1 - 4) | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	17,037	17,896
Originated Loan | Pass Rated (Grades 1 - 4) | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	454	454
Originated Loan | Pass Rated (Grades 1 - 4) | Consumer, indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	51	55
Originated Loan | Pass Rated (Grades 1 - 4) | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	88	88
Originated Loan | Pass Rated (Grades 1 - 4) | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	37	33
Originated Loan | Pass Rated (Grades 1 - 4) | Deposit account overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Originated Loan | Pass Rated (Grades 1 - 4) | Total Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	1,111,456	1,100,644
Originated Loan | Special Mention (Grade 5) | Commercial real estate, construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	6,190	5,502
Originated Loan | Special Mention (Grade 5) | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	14,058	17,189
Originated Loan | Special Mention (Grade 5) | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	20,248	22,691
Originated Loan | Special Mention (Grade 5) | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	46,477	13,062
Originated Loan | Special Mention (Grade 5) | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	579	1,000
Originated Loan | Special Mention (Grade 5) | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Originated Loan | Special Mention (Grade 5) | Consumer, indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	6	8
Originated Loan | Special Mention (Grade 5) | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	6	8
Originated Loan | Special Mention (Grade 5) | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Originated Loan | Special Mention (Grade 5) | Deposit account overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Originated Loan | Special Mention (Grade 5) | Total Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	67,310	36,761
Originated Loan | Substandard (Grade 6) | Commercial real estate, construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	732	754
Originated Loan | Substandard (Grade 6) | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	16,971	16,938
Originated Loan | Substandard (Grade 6) | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	17,703	17,692
Originated Loan | Substandard (Grade 6) | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	4,175	4,512
Originated Loan | Substandard (Grade 6) | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	11,270	11,371
Originated Loan | Substandard (Grade 6) | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Originated Loan | Substandard (Grade 6) | Consumer, indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Originated Loan | Substandard (Grade 6) | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Originated Loan | Substandard (Grade 6) | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Originated Loan | Substandard (Grade 6) | Deposit account overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Originated Loan | Substandard (Grade 6) | Total Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	33,148	33,575
Originated Loan | Doubtful (Grade 7) | Commercial real estate, construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Originated Loan | Doubtful (Grade 7) | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Originated Loan | Doubtful (Grade 7) | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Originated Loan | Doubtful (Grade 7) | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Originated Loan | Doubtful (Grade 7) | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	131	216
Originated Loan | Doubtful (Grade 7) | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Originated Loan | Doubtful (Grade 7) | Consumer, indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Originated Loan | Doubtful (Grade 7) | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Originated Loan | Doubtful (Grade 7) | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Originated Loan | Doubtful (Grade 7) | Deposit account overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Originated Loan | Doubtful (Grade 7) | Total Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	131	216
Originated Loan | Not Rated | Commercial real estate, construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	452	453
Originated Loan | Not Rated | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Originated Loan | Not Rated | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	452	453
Originated Loan | Not Rated | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Originated Loan | Not Rated | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	273,873	274,040
Originated Loan | Not Rated | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	87,268	88,448
Originated Loan | Not Rated | Consumer, indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	347,550	340,327
Originated Loan | Not Rated | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	414,899	407,304
Originated Loan | Not Rated | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	67,349	66,977
Originated Loan | Not Rated | Deposit account overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	543	849
Originated Loan | Not Rated | Total Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	777,035	771,094
Acquired Loans | Commercial real estate, construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	8,054	8,319
Acquired Loans | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	156,115	165,120
Acquired Loans | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	164,169	173,439
Acquired Loans | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	33,815	34,493
Acquired Loans | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	194,063	184,864
Acquired Loans | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	20,008	20,575
Acquired Loans | Consumer, indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	253	329
Acquired Loans | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	1,193	1,476
Acquired Loans | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	940	1,147
Acquired Loans | Total Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	413,248	414,847
Acquired Loans | Pass Rated (Grades 1 - 4) | Commercial real estate, construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	8,003	8,267
Acquired Loans | Pass Rated (Grades 1 - 4) | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	144,647	149,486
Acquired Loans | Pass Rated (Grades 1 - 4) | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	152,650	157,753
Acquired Loans | Pass Rated (Grades 1 - 4) | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	31,351	32,011
Acquired Loans | Pass Rated (Grades 1 - 4) | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	11,633	12,543
Acquired Loans | Pass Rated (Grades 1 - 4) | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	44	124
Acquired Loans | Pass Rated (Grades 1 - 4) | Consumer, indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	8	12
Acquired Loans | Pass Rated (Grades 1 - 4) | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	40	47
Acquired Loans | Pass Rated (Grades 1 - 4) | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	32	35
Acquired Loans | Pass Rated (Grades 1 - 4) | Total Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	195,718	202,478
Acquired Loans | Special Mention (Grade 5) | Commercial real estate, construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Acquired Loans | Special Mention (Grade 5) | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	3,440	6,527
Acquired Loans | Special Mention (Grade 5) | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	3,440	6,527
Acquired Loans | Special Mention (Grade 5) | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	185	157
Acquired Loans | Special Mention (Grade 5) | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	647	593
Acquired Loans | Special Mention (Grade 5) | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Acquired Loans | Special Mention (Grade 5) | Consumer, indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Acquired Loans | Special Mention (Grade 5) | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Acquired Loans | Special Mention (Grade 5) | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Acquired Loans | Special Mention (Grade 5) | Total Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	4,272	7,277
Acquired Loans | Substandard (Grade 6) | Commercial real estate, construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	51	52
Acquired Loans | Substandard (Grade 6) | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	7,918	9,107
Acquired Loans | Substandard (Grade 6) | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	7,969	9,159
Acquired Loans | Substandard (Grade 6) | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	2,279	2,325
Acquired Loans | Substandard (Grade 6) | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	1,024	1,105
Acquired Loans | Substandard (Grade 6) | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Acquired Loans | Substandard (Grade 6) | Consumer, indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Acquired Loans | Substandard (Grade 6) | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Acquired Loans | Substandard (Grade 6) | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Acquired Loans | Substandard (Grade 6) | Total Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	11,272	12,589
Acquired Loans | Doubtful (Grade 7) | Commercial real estate, construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Acquired Loans | Doubtful (Grade 7) | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	110	0
Acquired Loans | Doubtful (Grade 7) | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	110	0
Acquired Loans | Doubtful (Grade 7) | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Acquired Loans | Doubtful (Grade 7) | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Acquired Loans | Doubtful (Grade 7) | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Acquired Loans | Doubtful (Grade 7) | Consumer, indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Acquired Loans | Doubtful (Grade 7) | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Acquired Loans | Doubtful (Grade 7) | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Acquired Loans | Doubtful (Grade 7) | Total Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	110	0
Acquired Loans | Not Rated | Commercial real estate, construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Acquired Loans | Not Rated | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Acquired Loans | Not Rated | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Acquired Loans | Not Rated | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Acquired Loans | Not Rated | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	180,759	170,623
Acquired Loans | Not Rated | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	19,964	20,451
Acquired Loans | Not Rated | Consumer, indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	245	317
Acquired Loans | Not Rated | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	1,153	1,429
Acquired Loans | Not Rated | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	908	1,112
Acquired Loans | Not Rated | Total Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	$ 201,876	$ 192,503