Loans and Allowance for Loan Losses (Schedule of Outstanding Consumer Loans by Risk Category) (Details) - Consumer Loan [Member] - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Outstanding commercial and consumer loans by risk category
Outstanding consumer loans	$ 721,262	$ 645,187
Other Consumer [Member]
Outstanding commercial and consumer loans by risk category
Outstanding consumer loans	23,428	25,733
Pass [Member]
Outstanding commercial and consumer loans by risk category
Outstanding consumer loans	709,061	635,996
Pass [Member] | Other Consumer [Member]
Outstanding commercial and consumer loans by risk category
Outstanding consumer loans	23,287	25,421
Special Mention [Member]
Outstanding commercial and consumer loans by risk category
Outstanding consumer loans	3,640	3,303
Special Mention [Member] | Other Consumer [Member]
Outstanding commercial and consumer loans by risk category
Outstanding consumer loans	107	261
Substandard [Member]
Outstanding commercial and consumer loans by risk category
Outstanding consumer loans	8,561	5,888
Substandard [Member] | Other Consumer [Member]
Outstanding commercial and consumer loans by risk category
Outstanding consumer loans	34	51
Doubtful [Member]
Outstanding commercial and consumer loans by risk category
Outstanding consumer loans
Doubtful [Member] | Other Consumer [Member]
Outstanding commercial and consumer loans by risk category
Outstanding consumer loans
Real Estate Loan [Member]
Outstanding commercial and consumer loans by risk category
Outstanding consumer loans	496,684	398,245
Real Estate Loan [Member] | Pass [Member]
Outstanding commercial and consumer loans by risk category
Outstanding consumer loans	489,923	392,572
Real Estate Loan [Member] | Special Mention [Member]
Outstanding commercial and consumer loans by risk category
Outstanding consumer loans	2,182	2,267
Real Estate Loan [Member] | Substandard [Member]
Outstanding commercial and consumer loans by risk category
Outstanding consumer loans	4,579	3,406
Real Estate Loan [Member] | Doubtful [Member]
Outstanding commercial and consumer loans by risk category
Outstanding consumer loans
Home Equity Loan [Member]
Outstanding commercial and consumer loans by risk category
Outstanding consumer loans	161,795	179,738
Home Equity Loan [Member] | Pass [Member]
Outstanding commercial and consumer loans by risk category
Outstanding consumer loans	156,496	176,532
Home Equity Loan [Member] | Special Mention [Member]
Outstanding commercial and consumer loans by risk category
Outstanding consumer loans	1,351	775
Home Equity Loan [Member] | Substandard [Member]
Outstanding commercial and consumer loans by risk category
Outstanding consumer loans	3,948	2,431
Home Equity Loan [Member] | Doubtful [Member]
Outstanding commercial and consumer loans by risk category
Outstanding consumer loans
Construction Loans [Member]
Outstanding commercial and consumer loans by risk category
Outstanding consumer loans	39,355	41,471
Construction Loans [Member] | Pass [Member]
Outstanding commercial and consumer loans by risk category
Outstanding consumer loans	39,355	41,471
Construction Loans [Member] | Special Mention [Member]
Outstanding commercial and consumer loans by risk category
Outstanding consumer loans
Construction Loans [Member] | Substandard [Member]
Outstanding commercial and consumer loans by risk category
Outstanding consumer loans
Construction Loans [Member] | Doubtful [Member]
Outstanding commercial and consumer loans by risk category
Outstanding consumer loans