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Securities (Details) - USD ($)
$ in Thousands
Sep. 30, 2019
Dec. 31, 2018
Amortized cost and fair value of investment securities Available-for-sale [Abstract]    
Amortized Cost $ 9,033 $ 12,078
Unrealized Losses 4 100
Securities available for sale, at fair value 9,029 11,978
U.S. Treasury Securities [Member]    
Amortized cost and fair value of investment securities Available-for-sale [Abstract]    
Amortized Cost 999 1,992
Unrealized Losses   11
Securities available for sale, at fair value 999 1,981
U.S. Government Agency Notes [Member]    
Amortized cost and fair value of investment securities Available-for-sale [Abstract]    
Amortized Cost 8,034 10,086
Unrealized Losses 4 89
Securities available for sale, at fair value $ 8,030 $ 9,997