Loans and Allowance for Loan Losses (Details 4) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016	Dec. 31, 2015
Ending allowance balance attributable to loans:
Individually evaluated for impairment	$ 178	$ 178
Collectively evaluated for impairment	4,677	4,690
Total ending allowance balance	4,855	4,868	$ 5,180	$ 5,194
Loan Portfolio:
Individually evaluated for impairment	6,114	6,966
Collectively evaluated for impairment	390,973	412,802
Total ending loans balance	397,087	419,768
Commercial
Ending allowance balance attributable to loans:
Collectively evaluated for impairment	1,246	1,394
Total ending allowance balance	1,246	1,394	1,985	1,977
Loan Portfolio:
Individually evaluated for impairment	93	106
Collectively evaluated for impairment	64,462	96,175
Total ending loans balance	64,555	96,281
Commercial real estate
Ending allowance balance attributable to loans:
Individually evaluated for impairment	178	178
Collectively evaluated for impairment	3,048	2,894
Total ending allowance balance	3,226	3,072	2,903	2,926
Loan Portfolio:
Individually evaluated for impairment	6,021	6,860
Collectively evaluated for impairment	239,854	231,832
Total ending loans balance	245,875	238,692
Residential real estate
Ending allowance balance attributable to loans:
Collectively evaluated for impairment	142	163
Total ending allowance balance	142	163	154	153
Loan Portfolio:
Collectively evaluated for impairment	58,976	57,008
Total ending loans balance	58,976	57,008
Consumer | Home equity
Ending allowance balance attributable to loans:
Collectively evaluated for impairment	148	150
Total ending allowance balance	148	150	53	52
Loan Portfolio:
Collectively evaluated for impairment	24,573	25,061
Total ending loans balance	24,573	25,061
Consumer | Other
Ending allowance balance attributable to loans:
Collectively evaluated for impairment	93	89
Total ending allowance balance	93	89	$ 85	$ 86
Loan Portfolio:
Collectively evaluated for impairment	3,108	2,726
Total ending loans balance	$ 3,108	$ 2,726