Loans Loans By Risk Category (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Loans
Total Loans	$ 2,338,344	$ 2,206,507
Balance	2,357,137	2,224,936
Loan Type
Loans
Balance	2,357,137	2,224,936
Pass Rated | Loan Type
Loans
Balance	1,303,122	1,225,221
Special Mention | Loan Type
Loans
Balance	44,038	41,446
Substandard | Loan Type
Loans
Balance	46,164	57,238
Doubtful | Loan Type
Loans
Balance	216	498
Not Rated | Loan Type
Loans
Balance	963,597	900,533
Originated Loan | Loan Type
Loans
Balance	1,942,290	1,708,104
Originated Loan | Commercial real estate, construction
Loans
Balance	107,118	84,626
Originated Loan | Commercial real estate, other
Loans
Balance	595,447	531,557
Originated Loan | Commercial real estate
Loans
Balance	702,565	616,183
Originated Loan | Commercial and industrial
Loans
Balance	438,051	378,131
Originated Loan | Residential real estate
Loans
Balance	304,523	307,490
Originated Loan | Home equity lines of credit
Loans
Balance	88,902	85,617
Originated Loan | Consumer, indirect
Loans
Balance	340,390	252,024
Originated Loan | Consumer, other
Loans
Balance	67,010	67,579
Originated Loan | Consumer, other
Loans
Balance	407,400	319,603
Originated Loan | Deposit account overdrafts
Loans
Balance	849	1,080
Originated Loan | Pass Rated | Loan Type
Loans
Balance	1,100,644	973,109
Originated Loan | Pass Rated | Commercial real estate, construction
Loans
Balance	100,409	73,423
Originated Loan | Pass Rated | Commercial real estate, other
Loans
Balance	561,320	505,029
Originated Loan | Pass Rated | Commercial real estate
Loans
Balance	661,729	578,452
Originated Loan | Pass Rated | Commercial and industrial
Loans
Balance	420,477	346,791
Originated Loan | Pass Rated | Residential real estate
Loans
Balance	17,896	47,336
Originated Loan | Pass Rated | Home equity lines of credit
Loans
Balance	454	465
Originated Loan | Pass Rated | Consumer, indirect
Loans
Balance	55	50
Originated Loan | Pass Rated | Consumer, other
Loans
Balance	33	15
Originated Loan | Pass Rated | Consumer, other
Loans
Balance	88	65
Originated Loan | Pass Rated | Deposit account overdrafts
Loans
Balance	0	0
Originated Loan | Special Mention | Loan Type
Loans
Balance	36,761	28,035
Originated Loan | Special Mention | Commercial real estate, construction
Loans
Balance	5,502	0
Originated Loan | Special Mention | Commercial real estate, other
Loans
Balance	17,189	11,855
Originated Loan | Special Mention | Commercial real estate
Loans
Balance	22,691	11,855
Originated Loan | Special Mention | Commercial and industrial
Loans
Balance	13,062	15,210
Originated Loan | Special Mention | Residential real estate
Loans
Balance	1,000	957
Originated Loan | Special Mention | Home equity lines of credit
Loans
Balance	0	0
Originated Loan | Special Mention | Consumer, indirect
Loans
Balance	8	0
Originated Loan | Special Mention | Consumer, other
Loans
Balance	0	13
Originated Loan | Special Mention | Consumer, other
Loans
Balance	8	13
Originated Loan | Special Mention | Deposit account overdrafts
Loans
Balance	0	0
Originated Loan | Substandard | Loan Type
Loans
Balance	33,575	44,592
Originated Loan | Substandard | Commercial real estate, construction
Loans
Balance	754	826
Originated Loan | Substandard | Commercial real estate, other
Loans
Balance	16,938	14,673
Originated Loan | Substandard | Commercial real estate
Loans
Balance	17,692	15,499
Originated Loan | Substandard | Commercial and industrial
Loans
Balance	4,512	16,130
Originated Loan | Substandard | Residential real estate
Loans
Balance	11,371	12,828
Originated Loan | Substandard | Home equity lines of credit
Loans
Balance	0	135
Originated Loan | Substandard | Consumer, indirect
Loans
Balance	0	0
Originated Loan | Substandard | Consumer, other
Loans
Balance	0	0
Originated Loan | Substandard | Consumer, other
Loans
Balance	0	0
Originated Loan | Substandard | Deposit account overdrafts
Loans
Balance	0	0
Originated Loan | Doubtful | Loan Type
Loans
Balance	216	304
Originated Loan | Doubtful | Commercial real estate, construction
Loans
Balance	0	0
Originated Loan | Doubtful | Commercial real estate, other
Loans
Balance	0	0
Originated Loan | Doubtful | Commercial real estate
Loans
Balance	0	0
Originated Loan | Doubtful | Commercial and industrial
Loans
Balance	0	0
Originated Loan | Doubtful | Residential real estate
Loans
Balance	216	304
Originated Loan | Doubtful | Home equity lines of credit
Loans
Balance	0	0
Originated Loan | Doubtful | Consumer, indirect
Loans
Balance	0	0
Originated Loan | Doubtful | Consumer, other
Loans
Balance	0	0
Originated Loan | Doubtful | Consumer, other
Loans
Balance	0	0
Originated Loan | Doubtful | Deposit account overdrafts
Loans
Balance	0	0
Originated Loan | Not Rated | Loan Type
Loans
Balance	771,094	662,064
Originated Loan | Not Rated | Commercial real estate, construction
Loans
Balance	453	10,377
Originated Loan | Not Rated | Commercial real estate, other
Loans
Balance	0	0
Originated Loan | Not Rated | Commercial real estate
Loans
Balance	453	10,377
Originated Loan | Not Rated | Commercial and industrial
Loans
Balance	0	0
Originated Loan | Not Rated | Residential real estate
Loans
Balance	274,040	246,065
Originated Loan | Not Rated | Home equity lines of credit
Loans
Balance	88,448	85,017
Originated Loan | Not Rated | Consumer, indirect
Loans
Balance	340,327	251,996
Originated Loan | Not Rated | Consumer, other
Loans
Balance	66,977	67,529
Originated Loan | Not Rated | Consumer, other
Loans
Balance	407,304	319,525
Originated Loan | Not Rated | Deposit account overdrafts
Loans
Balance	849	1,080
Acquired Loans | Loan Type
Loans
Balance	414,847	516,832
Acquired Loans | Commercial real estate, construction
Loans
Balance	8,319	10,100
Acquired Loans | Commercial real estate, other
Loans
Balance	165,120	204,466
Acquired Loans | Commercial real estate
Loans
Balance	173,439	214,566
Acquired Loans | Commercial and industrial
Loans
Balance	34,493	44,208
Acquired Loans | Residential real estate
Loans
Balance	184,864	228,435
Acquired Loans | Home equity lines of credit
Loans
Balance	20,575	25,875
Acquired Loans | Consumer, indirect
Loans
Balance	329	808
Acquired Loans | Consumer, other
Loans
Balance	1,147	2,940
Acquired Loans | Consumer, other
Loans
Balance	1,476	3,748
Acquired Loans | Deposit account overdrafts
Loans
Balance	0
Acquired Loans | Pass Rated | Loan Type
Loans
Balance	202,478	252,112
Acquired Loans | Pass Rated | Commercial real estate, construction
Loans
Balance	8,267	10,046
Acquired Loans | Pass Rated | Commercial real estate, other
Loans
Balance	149,486	181,781
Acquired Loans | Pass Rated | Commercial real estate
Loans
Balance	157,753	191,827
Acquired Loans | Pass Rated | Commercial and industrial
Loans
Balance	32,011	42,809
Acquired Loans | Pass Rated | Residential real estate
Loans
Balance	12,543	17,170
Acquired Loans | Pass Rated | Home equity lines of credit
Loans
Balance	124	202
Acquired Loans | Pass Rated | Consumer, indirect
Loans
Balance	12	51
Acquired Loans | Pass Rated | Consumer, other
Loans
Balance	35	53
Acquired Loans | Pass Rated | Consumer, other
Loans
Balance	47	104
Acquired Loans | Pass Rated | Deposit account overdrafts
Loans
Balance	0
Acquired Loans | Special Mention | Loan Type
Loans
Balance	7,277	13,411
Acquired Loans | Special Mention | Commercial real estate, construction
Loans
Balance	0	0
Acquired Loans | Special Mention | Commercial real estate, other
Loans
Balance	6,527	12,475
Acquired Loans | Special Mention | Commercial real estate
Loans
Balance	6,527	12,475
Acquired Loans | Special Mention | Commercial and industrial
Loans
Balance	157	227
Acquired Loans | Special Mention | Residential real estate
Loans
Balance	593	709
Acquired Loans | Special Mention | Home equity lines of credit
Loans
Balance	0	0
Acquired Loans | Special Mention | Consumer, indirect
Loans
Balance	0	0
Acquired Loans | Special Mention | Consumer, other
Loans
Balance	0	0
Acquired Loans | Special Mention | Consumer, other
Loans
Balance	0	0
Acquired Loans | Special Mention | Deposit account overdrafts
Loans
Balance	0
Acquired Loans | Substandard | Loan Type
Loans
Balance	12,589	12,646
Acquired Loans | Substandard | Commercial real estate, construction
Loans
Balance	52	54
Acquired Loans | Substandard | Commercial real estate, other
Loans
Balance	9,107	10,210
Acquired Loans | Substandard | Commercial real estate
Loans
Balance	9,159	10,264
Acquired Loans | Substandard | Commercial and industrial
Loans
Balance	2,325	978
Acquired Loans | Substandard | Residential real estate
Loans
Balance	1,105	1,404
Acquired Loans | Substandard | Home equity lines of credit
Loans
Balance	0	0
Acquired Loans | Substandard | Consumer, indirect
Loans
Balance	0	0
Acquired Loans | Substandard | Consumer, other
Loans
Balance	0	0
Acquired Loans | Substandard | Consumer, other
Loans
Balance	0	0
Acquired Loans | Substandard | Deposit account overdrafts
Loans
Balance	0
Acquired Loans | Doubtful | Loan Type
Loans
Balance	0	194
Acquired Loans | Doubtful | Commercial real estate, construction
Loans
Balance	0	0
Acquired Loans | Doubtful | Commercial real estate, other
Loans
Balance	0	0
Acquired Loans | Doubtful | Commercial real estate
Loans
Balance	0	0
Acquired Loans | Doubtful | Commercial and industrial
Loans
Balance	0	194
Acquired Loans | Doubtful | Residential real estate
Loans
Balance	0	0
Acquired Loans | Doubtful | Home equity lines of credit
Loans
Balance	0	0
Acquired Loans | Doubtful | Consumer, indirect
Loans
Balance	0	0
Acquired Loans | Doubtful | Consumer, other
Loans
Balance	0	0
Acquired Loans | Doubtful | Consumer, other
Loans
Balance	0	0
Acquired Loans | Doubtful | Deposit account overdrafts
Loans
Balance	0
Acquired Loans | Not Rated | Loan Type
Loans
Balance	192,503	238,469
Acquired Loans | Not Rated | Commercial real estate, construction
Loans
Balance	0	0
Acquired Loans | Not Rated | Commercial real estate, other
Loans
Balance	0	0
Acquired Loans | Not Rated | Commercial real estate
Loans
Balance	0	0
Acquired Loans | Not Rated | Commercial and industrial
Loans
Balance	0	0
Acquired Loans | Not Rated | Residential real estate
Loans
Balance	170,623	209,152
Acquired Loans | Not Rated | Home equity lines of credit
Loans
Balance	20,451	25,673
Acquired Loans | Not Rated | Consumer, indirect
Loans
Balance	317	757
Acquired Loans | Not Rated | Consumer, other
Loans
Balance	1,112	2,887
Acquired Loans | Not Rated | Consumer, other
Loans
Balance	1,429	$ 3,644
Acquired Loans | Not Rated | Deposit account overdrafts
Loans
Balance	$ 0