Loans and Allowance for Loan Losses (Schedule of Breakdown of Outstanding Loans by Risk Category) (Details) - Commercial Loan [Member] - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Outstanding commercial and consumer loans by risk category
Outstanding commercial loans	$ 1,240,625	$ 1,128,705
Pass [Member]
Outstanding commercial and consumer loans by risk category
Outstanding commercial loans	1,221,587	1,115,196
Special Mention [Member]
Outstanding commercial and consumer loans by risk category
Outstanding commercial loans	7,865	3,385
Substandard [Member]
Outstanding commercial and consumer loans by risk category
Outstanding commercial loans	11,173	10,124
Doubtful [Member]
Outstanding commercial and consumer loans by risk category
Outstanding commercial loans
Owner Occupied Re [Member]
Outstanding commercial and consumer loans by risk category
Outstanding commercial loans	392,896	367,018
Owner Occupied Re [Member] | Pass [Member]
Outstanding commercial and consumer loans by risk category
Outstanding commercial loans	389,869	363,621
Owner Occupied Re [Member] | Special Mention [Member]
Outstanding commercial and consumer loans by risk category
Outstanding commercial loans	729	296
Owner Occupied Re [Member] | Substandard [Member]
Outstanding commercial and consumer loans by risk category
Outstanding commercial loans	2,298	3,101
Owner Occupied Re [Member] | Doubtful [Member]
Outstanding commercial and consumer loans by risk category
Outstanding commercial loans
Non Owner Occupied Re [Member]
Outstanding commercial and consumer loans by risk category
Outstanding commercial loans	481,865	404,296
Non Owner Occupied Re [Member] | Pass [Member]
Outstanding commercial and consumer loans by risk category
Outstanding commercial loans	472,762	400,266
Non Owner Occupied Re [Member] | Special Mention [Member]
Outstanding commercial and consumer loans by risk category
Outstanding commercial loans	4,186	118
Non Owner Occupied Re [Member] | Substandard [Member]
Outstanding commercial and consumer loans by risk category
Outstanding commercial loans	4,917	3,912
Non Owner Occupied Re [Member] | Doubtful [Member]
Outstanding commercial and consumer loans by risk category
Outstanding commercial loans
Construction Loans [Member]
Outstanding commercial and consumer loans by risk category
Outstanding commercial loans	75,710	84,411
Construction Loans [Member] | Pass [Member]
Outstanding commercial and consumer loans by risk category
Outstanding commercial loans	75,710	84,411
Construction Loans [Member] | Special Mention [Member]
Outstanding commercial and consumer loans by risk category
Outstanding commercial loans
Construction Loans [Member] | Substandard [Member]
Outstanding commercial and consumer loans by risk category
Outstanding commercial loans
Construction Loans [Member] | Doubtful [Member]
Outstanding commercial and consumer loans by risk category
Outstanding commercial loans
Business Loan [Member]
Outstanding commercial and consumer loans by risk category
Outstanding commercial loans	290,154	272,980
Business Loan [Member] | Pass [Member]
Outstanding commercial and consumer loans by risk category
Outstanding commercial loans	283,246	266,898
Business Loan [Member] | Special Mention [Member]
Outstanding commercial and consumer loans by risk category
Outstanding commercial loans	2,950	2,971
Business Loan [Member] | Substandard [Member]
Outstanding commercial and consumer loans by risk category
Outstanding commercial loans	3,958	3,111
Business Loan [Member] | Doubtful [Member]
Outstanding commercial and consumer loans by risk category
Outstanding commercial loans