Securities (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($) security	Dec. 31, 2015 USD ($)
Securities
Amortized Cost	$ 12,982	$ 13,742
Gross Unrealized Gains	220	398
Fair Value	$ 13,202	14,140
Estimated remaining term	4 years 6 months
Securities pledged	$ 629	719
Securities of any one issuer, other than U.S. Government, greater than 10% of shareholders equity	$ 0	0
Shareholders equity representing a concentration risk for any one securities investment (as a percent)	10.00%
Sales of securities	$ 0	0
Residential mortgage-backed
Securities
Amortized Cost	11,022	11,796
Gross Unrealized Gains	192	371
Fair Value	$ 11,214	12,167
Number of securities held | security	24
U.S. Government and federal agency
Securities
Amortized Cost	$ 1,960	1,946
Gross Unrealized Gains	28	27
Fair Value	$ 1,988	$ 1,973
Number of securities held | security	1