Loans and Allowance for Loan Losses (Details 4) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Acquired with deteriorated credit quality	$ 2,098	$ 1,960
Home Equity Loans [Member] \| Consumer Real Estate [Member]
Acquired with deteriorated credit quality	744	628
Home Equity Lines of Credit [Member] \| Consumer Real Estate [Member]
Acquired with deteriorated credit quality	14	15
1-4 Family Residential Mortgages [Member] \| Consumer Real Estate [Member]
Acquired with deteriorated credit quality	564	583
Student Loans [Member] \| Consumer And Other [Member]
Acquired with deteriorated credit quality	689	622
Consumer Other [Member]
Acquired with deteriorated credit quality	776	734
Consumer Other [Member] \| Other [Member]
Acquired with deteriorated credit quality	87	112
Consumer Real Estate
Acquired with deteriorated credit quality	1,322	1,226
Performing Financial Instruments [Member] \| Residential 1 - 4 Family Residential Mortgage [Member]
Acquired with deteriorated credit quality	510	498
Performing Financial Instruments [Member] \| Home equity line of credit [Member] \| Consumer Real Estates [Member]
Acquired with deteriorated credit quality	14	15
Performing [Member]
Acquired with deteriorated credit quality	1,543	1,387
Performing [Member] \| Consumer Other [Member]
Acquired with deteriorated credit quality	705	677
Performing [Member] \| Consumer Other [Member] \| Student Loan [Member]
Acquired with deteriorated credit quality	620	565
Performing [Member] \| Consumer Other [Member] \| Other [Member]
Acquired with deteriorated credit quality	85	112
Performing [Member] \| Consumer Real Estate
Acquired with deteriorated credit quality	838	710
Performing [Member] \| Consumer Real Estate \| Home Equity [Member]
Acquired with deteriorated credit quality	314	197
Nonperforming Financial Instruments [Member]
Acquired with deteriorated credit quality	555	573
Nonperforming Financial Instruments [Member] \| Consumer Other [Member]
Acquired with deteriorated credit quality	71	57
Nonperforming Financial Instruments [Member] \| Consumer Other [Member] \| Other [Member]
Acquired with deteriorated credit quality	2	0
Nonperforming Financial Instruments [Member] \| Consumer Real Estate
Acquired with deteriorated credit quality	484	516
Nonperforming Financial Instruments [Member] \| Consumer Real Estate \| Home Equity [Member]
Acquired with deteriorated credit quality	430	431
Nonperforming Financial Instruments [Member] \| Residential 1 - 4 Family residential mortgages [Member] \| Concumer Real Estate [Member]
Acquired with deteriorated credit quality	54	85
Nonperforming Financial Instruments [Member] \| Home equity line of credit [Member]
Acquired with deteriorated credit quality	0	0
NonPerforming Financial Instruments [Member] \| Conusmer Other [Member] \| Student Loans [Member]
Acquired with deteriorated credit quality	$ 69	$ 57