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Securities (Amortized Cost and Fair Value of Debt Securities by Contractual Maturity) (Details) - USD ($)
$ in Thousands
Jun. 30, 2019
Dec. 31, 2018
Schedule Of Available For Sale Securities [Line Items]    
Due in one year or less, Amortized Cost $ 4,991 $ 3,495
Due from one to five years, Amortized Cost 4,986 6,483
Available-for-sale Securities Total, Amortized Cost 10,171 10,207
Due in one year or less, Fair Value 4,980 3,472
Due from one to five years, Fair Value 5,010 6,409
Available-for-sale Securities Total, Fair Value 10,189 10,114
Mortgage-Backed Securities - Residential [Member]    
Schedule Of Available For Sale Securities [Line Items]    
No single maturity, Amortized Cost 147 167
No single maturity, Fair Value 151 170
Available-for-sale Securities Total, Fair Value 151 170
Collateralized Mortgage Obligations [Member]    
Schedule Of Available For Sale Securities [Line Items]    
No single maturity, Amortized Cost 47 62
No single maturity, Fair Value 48 63
Available-for-sale Securities Total, Fair Value $ 48 $ 63