Loans Loan Balances By Classification (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Loans
Balance	$ 2,873,525	$ 2,728,778
Loan Type
Loans
Balance	2,873,525	2,728,778
Financial Asset Originated [Member]
Loans
Balance	2,273,839	2,156,030
Financial Asset Originated [Member] | Loan Type
Loans
Balance	2,273,839	2,156,030
Financial Asset Originated [Member] | Construction
Loans
Balance	83,283	124,013
Financial Asset Originated [Member] | Commercial real estate
Loans
Balance	754,859	756,213
Financial Asset Originated [Member] | Commercial and industrial
Loans
Balance	622,175	530,207
Financial Asset Originated [Member] | Residential real estate
Loans
Balance	314,935	296,860
Financial Asset Originated [Member] | Home equity lines of credit
Loans
Balance	93,013	93,326
Financial Asset Originated [Member] | Consumer, indirect
Loans
Balance	417,127	407,167
Financial Asset Originated [Member] | Consumer, direct
Loans
Balance	70,852	71,674
Financial Asset Originated [Member] | Consumer
Loans
Balance	487,979	478,841
Financial Asset Originated [Member] | Deposit account overdrafts
Loans
Balance	878	583
Acquired Loans | Loan Type
Loans
Balance	599,686	572,748
Acquired Loans | Construction
Loans
Balance	5,235	12,404
Acquired Loans | Commercial real estate
Loans
Balance	166,897	197,115
Acquired Loans | Commercial and industrial
Loans
Balance	40,818	35,537
Acquired Loans | Residential real estate
Loans
Balance	346,541	296,937
Acquired Loans | Home equity lines of credit
Loans
Balance	39,691	40,653
Acquired Loans | Consumer, indirect
Loans
Balance	58	136
Acquired Loans | Consumer, direct
Loans
Balance	5,681	2,370
Acquired Loans | Consumer
Loans
Balance	$ 5,739	$ 2,506