Allowance for Loan Losses (Loan Portfolio Designated by the Internal Risk Ratings Assigned to Each Credit) (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	$ 521,763	$ 537,190
Excellent [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	37,920	35,366
Good [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	47,854	48,932
Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	408,315	428,096
Watch [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	17,985	17,223
Special Mention [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	490	609
Substandard [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	9,199	6,964
Commercial and industrial - organic [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	39,376	41,526
Commercial and industrial - organic [Member] | Excellent [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	2,457	3,692
Commercial and industrial - organic [Member] | Good [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	20,638	23,381
Commercial and industrial - organic [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	15,672	13,993
Commercial and industrial - organic [Member] | Watch [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	176	264
Commercial and industrial - organic [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans		28
Commercial and industrial - organic [Member] | Substandard [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	433	168
Commercial and industrial - government guaranteed [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	35,143	31,367
Commercial and industrial - government guaranteed [Member] | Excellent [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	35,143	31,367
Commercial and industrial - government guaranteed [Member] | Good [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans
Commercial and industrial - government guaranteed [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans
Commercial and industrial - government guaranteed [Member] | Watch [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans
Commercial and industrial - government guaranteed [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans
Commercial and industrial - government guaranteed [Member] | Substandard [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans
Commercial and industrial - syndicated [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	12,091	12,134
Commercial and industrial - syndicated [Member] | Excellent [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans
Commercial and industrial - syndicated [Member] | Good [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans
Commercial and industrial - syndicated [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	9,560	9,588
Commercial and industrial - syndicated [Member] | Watch [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans
Commercial and industrial - syndicated [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans
Commercial and industrial - syndicated [Member] | Substandard [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	2,531	2,546
Residential construction [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	1,021	1,552
Residential construction [Member] | Excellent [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans
Residential construction [Member] | Good [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans
Residential construction [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	1,021	1,552
Residential construction [Member] | Watch [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans
Residential construction [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans
Residential construction [Member] | Substandard [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans
Commercial construction [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	3,663	5,078
Commercial construction [Member] | Excellent [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans
Commercial construction [Member] | Good [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans
Commercial construction [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	3,663	5,078
Commercial construction [Member] | Watch [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans
Commercial construction [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans
Commercial construction [Member] | Substandard [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans
Land and land development [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	9,636	10,894
Land and land development [Member] | Excellent [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans
Land and land development [Member] | Good [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans
Land and land development [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	8,675	9,888
Land and land development [Member] | Watch [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	484	501
Land and land development [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans
Land and land development [Member] | Substandard [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	477	505
1-4 family residential, first lien, investment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	40,807	40,311
1-4 family residential, first lien, investment [Member] | Excellent [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans
1-4 family residential, first lien, investment [Member] | Good [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans
1-4 family residential, first lien, investment [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	36,600	36,314
1-4 family residential, first lien, investment [Member] | Watch [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	3,827	3,607
1-4 family residential, first lien, investment [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	114	117
1-4 family residential, first lien, investment [Member] | Substandard [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	266	273
1-4 family residential, first lien, owner occupied [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	16,304	16,775
1-4 family residential, first lien, owner occupied [Member] | Excellent [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans
1-4 family residential, first lien, owner occupied [Member] | Good [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans
1-4 family residential, first lien, owner occupied [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	15,181	15,540
1-4 family residential, first lien, owner occupied [Member] | Watch [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	1,060	1,087
1-4 family residential, first lien, owner occupied [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	9	11
1-4 family residential, first lien, owner occupied [Member] | Substandard [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	54	137
1-4 family residential, junior lien [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	2,894	3,169
1-4 family residential, junior lien [Member] | Excellent [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans
1-4 family residential, junior lien [Member] | Good [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans
1-4 family residential, junior lien [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	2,357	2,573
1-4 family residential, junior lien [Member] | Watch [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	39	58
1-4 family residential, junior lien [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	20	22
1-4 family residential, junior lien [Member] | Substandard [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	478	516
Home equity lines of credit, first lien [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	8,544	8,325
Home equity lines of credit, first lien [Member] | Excellent [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans
Home equity lines of credit, first lien [Member] | Good [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans
Home equity lines of credit, first lien [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	7,866	7,911
Home equity lines of credit, first lien [Member] | Watch [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	338	414
Home equity lines of credit, first lien [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans
Home equity lines of credit, first lien [Member] | Substandard [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	340
Home equity lines of credit, junior lien [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	9,472	10,912
Home equity lines of credit, junior lien [Member] | Excellent [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans
Home equity lines of credit, junior lien [Member] | Good [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans
Home equity lines of credit, junior lien [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	9,291	10,704
Home equity lines of credit, junior lien [Member] | Watch [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	99	97
Home equity lines of credit, junior lien [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans
Home equity lines of credit, junior lien [Member] | Substandard [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	82	111
Farm [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	9,298	10,397
Farm [Member] | Excellent [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans
Farm [Member] | Good [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans
Farm [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	7,652	8,719
Farm [Member] | Watch [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	328	339
Farm [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans
Farm [Member] | Substandard [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	1,318	1,339
Multifamily [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	24,432	27,328
Multifamily [Member] | Excellent [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans
Multifamily [Member] | Good [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans
Multifamily [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	24,432	27,328
Multifamily [Member] | Watch [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans
Multifamily [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans
Multifamily [Member] | Substandard [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans
Commercial owner occupied [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	95,286	93,800
Commercial owner occupied [Member] | Excellent [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans
Commercial owner occupied [Member] | Good [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans
Commercial owner occupied [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	86,398	86,868
Commercial owner occupied [Member] | Watch [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	6,828	6,932
Commercial owner occupied [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans
Commercial owner occupied [Member] | Substandard [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	2,060
Commercial non-owner occupied [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	116,890	123,214
Commercial non-owner occupied [Member] | Excellent [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans
Commercial non-owner occupied [Member] | Good [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans
Commercial non-owner occupied [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	113,143	120,720
Commercial non-owner occupied [Member] | Watch [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	2,684	1,519
Commercial non-owner occupied [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans
Commercial non-owner occupied [Member] | Substandard [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	1,063	975
Consumer revolving credit [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	24,341	21,540
Consumer revolving credit [Member] | Excellent [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	75	44
Consumer revolving credit [Member] | Good [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	23,786	20,852
Consumer revolving credit [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	469	644
Consumer revolving credit [Member] | Watch [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	11
Consumer revolving credit [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans
Consumer revolving credit [Member] | Substandard [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans
Consumer all other credit [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	4,196	5,530
Consumer all other credit [Member] | Excellent [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	245	263
Consumer all other credit [Member] | Good [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	3,430	4,699
Consumer all other credit [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	492	535
Consumer all other credit [Member] | Watch [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	2	4
Consumer all other credit [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans
Consumer all other credit [Member] | Substandard [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	27	29
Student Loans Purchased [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	49,918	54,691
Student Loans Purchased [Member] | Excellent [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans
Student Loans Purchased [Member] | Good [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans
Student Loans Purchased [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	47,392	51,494
Student Loans Purchased [Member] | Watch [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	2,109	2,401
Student Loans Purchased [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	347	431
Student Loans Purchased [Member] | Substandard [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	70	365
1-4 family residential, first lien - purchased [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	18,451	18,647
1-4 family residential, first lien - purchased [Member] | Excellent [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans
1-4 family residential, first lien - purchased [Member] | Good [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans
1-4 family residential, first lien - purchased [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	18,451	18,647
1-4 family residential, first lien - purchased [Member] | Watch [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans
1-4 family residential, first lien - purchased [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans
1-4 family residential, first lien - purchased [Member] | Substandard [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans