Financial Instruments with Off-Balance Sheet Risk (Loan Commitments and Standby Letters of Credit) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Loan Commitments and Standby Letters of Credit [Line Items]
Unused Commitments to Extend Credit	$ 794,051	$ 568,092
Standby letters of credit	14,342	12,498
Consumer, indirect
Loan Commitments and Standby Letters of Credit [Line Items]
Unused Commitments to Extend Credit	117,792	112,464
Construction Loans [Member]
Loan Commitments and Standby Letters of Credit [Line Items]
Unused Commitments to Extend Credit	141,009	102,491
Other loan commitments
Loan Commitments and Standby Letters of Credit [Line Items]
Unused Commitments to Extend Credit	$ 535,250	$ 353,137