Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Amortized cost and fair value of investment securities Available-for-sale [Abstract]
Amortized Cost	$ 12,134	$ 10,169
Unrealized Losses	123	50
Debt securities available for sale, at fair value	12,011	10,119
AFS securities, Number of securities in continuous unrealized loss position less than twelve months	10,996	10,119
U.S. Treasury Securities [Member]
Amortized cost and fair value of investment securities Available-for-sale [Abstract]
Amortized Cost	1,985
Unrealized Losses	10
Debt securities available for sale, at fair value	1,975
AFS securities, Number of securities in continuous unrealized loss position less than twelve months	1,975
U.S. Government Agency Notes [Member]
Amortized cost and fair value of investment securities Available-for-sale [Abstract]
Amortized Cost	10,149	10,169
Unrealized Losses	113	50
Debt securities available for sale, at fair value	10,036	10,119
AFS securities, Number of securities in continuous unrealized loss position less than twelve months	$ 9,021	$ 10,119