Borrowings (Summary of Information Related to Federal Funds Purchased) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016
Advances from Federal Home Loan Banks [Abstract]
Average balance during the year	$ 823	$ 73
Average interest rate during the year	1.64%	0.81%
Maximum month-end balance during the year	$ 3,413	$ 1,302
Gross lines of credit at year-end	28,000	36,000
Unused lines of credit at year-end	$ 28,000	$ 36,000

Federal Funds Purchased Activity For Year Average Balance Of Agreements Outstanding

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Federal Funds Purchased Activity For Year Average Interest Rate For Year

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Federal Funds Purchased Activity For Year Gross Lines Of Credit

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Federal Funds Purchased Activity For Year Maximum Outstanding At Any Month End

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Federal Funds Purchased Activity For Year Unused Lines Of Credit

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