Loans and Allowance for Loan Losses (Schedule of Loan Maturity Distribution by Type and Related Interest Rate) (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans, net of deferred fees, One year or less	$ 259,035	$ 229,307
Total gross loans, net of deferred fees, After one but within five years	704,422	662,830
Total gross loans, net of deferred fees, After five years	874,970	785,195
Total gross loans, net of deferred fees	1,838,427	1,677,332
Loans maturing after one year with: fixed interest rates	1,214,368	1,100,854
Loans maturing after one year with: floating interest rates	365,024	347,171
Commercial Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans, net of deferred fees, One year or less	200,825	167,452
Total gross loans, net of deferred fees, After one but within five years	577,324	554,846
Total gross loans, net of deferred fees, After five years	462,476	406,407
Total gross loans, net of deferred fees	1,240,625	1,128,705
Commercial Loan [Member] | Owner Occupied Re [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans, net of deferred fees, One year or less	37,933	20,839
Total gross loans, net of deferred fees, After one but within five years	148,367	165,436
Total gross loans, net of deferred fees, After five years	206,596	180,743
Total gross loans, net of deferred fees	392,896	367,018
Commercial Loan [Member] | Non Owner Occupied Re [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans, net of deferred fees, One year or less	58,945	43,000
Total gross loans, net of deferred fees, After one but within five years	263,046	227,454
Total gross loans, net of deferred fees, After five years	159,874	133,842
Total gross loans, net of deferred fees	481,865	404,296
Commercial Loan [Member] | Business Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans, net of deferred fees, One year or less	74,851	80,672
Total gross loans, net of deferred fees, After one but within five years	143,215	128,911
Total gross loans, net of deferred fees, After five years	72,088	63,397
Total gross loans, net of deferred fees	290,154	272,980
Commercial Loan [Member] | Construction Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans, net of deferred fees, One year or less	29,096	22,941
Total gross loans, net of deferred fees, After one but within five years	22,696	33,045
Total gross loans, net of deferred fees, After five years	23,918	28,425
Total gross loans, net of deferred fees	75,710	84,411
Consumer Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans, net of deferred fees, One year or less	58,210	61,855
Total gross loans, net of deferred fees, After one but within five years	127,098	107,984
Total gross loans, net of deferred fees, After five years	412,494	378,788
Total gross loans, net of deferred fees	597,802	548,627
Consumer Loan [Member] | Other Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans, net of deferred fees, One year or less	6,381	7,681
Total gross loans, net of deferred fees, After one but within five years	16,455	11,253
Total gross loans, net of deferred fees, After five years	4,295	4,888
Total gross loans, net of deferred fees	27,131	23,822
Consumer Loan [Member] | Construction Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans, net of deferred fees, One year or less	14,249	16,006
Total gross loans, net of deferred fees, After one but within five years	1,057	1,646
Total gross loans, net of deferred fees, After five years	34,242	20,273
Total gross loans, net of deferred fees	49,548	37,925
Consumer Loan [Member] | Real Estate Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans, net of deferred fees, One year or less	25,426	29,301
Total gross loans, net of deferred fees, After one but within five years	81,161	70,467
Total gross loans, net of deferred fees, After five years	239,925	221,175
Total gross loans, net of deferred fees	346,512	320,943
Consumer Loan [Member] | Home Equity Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans, net of deferred fees, One year or less	12,154	8,867
Total gross loans, net of deferred fees, After one but within five years	28,425	24,618
Total gross loans, net of deferred fees, After five years	134,032	132,452
Total gross loans, net of deferred fees	$ 174,611	$ 165,937