Securities (Amortized Cost and Fair Value of Debt Securities by Contractual Maturity) (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Schedule Of Available For Sale Securities [Line Items]
Due in one year or less, Amortized Cost	$ 3,498	$ 3,002
Due from one to five years, Amortized Cost	7,477	8,497
Available-for-sale Securities Total, Amortized Cost	11,231	11,845
Due in one year or less, Fair Value	3,476	2,993
Due from one to five years, Fair Value	7,328	8,424
Available-for-sale Securities Total, Fair Value	11,064	11,773
Mortgage-Backed Securities - Residential [Member]
Schedule Of Available For Sale Securities [Line Items]
No single maturity, Amortized Cost	184	236
No single maturity, Fair Value	187	244
Available-for-sale Securities Total, Fair Value	187	244
Collateralized Mortgage Obligations [Member]
Schedule Of Available For Sale Securities [Line Items]
No single maturity, Amortized Cost	72	110
No single maturity, Fair Value	73	112
Available-for-sale Securities Total, Fair Value	$ 73	$ 112

Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
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Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), maturing in next fiscal year following latest fiscal year. Excludes interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.

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