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Income Taxes (Schedule Of Effective Income Tax Rate Reconciliation) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Income Taxes [Abstract]    
Computed "Expected" Federal Tax Expense $ 156 $ 70
State Income Taxes, net of Federal Benefit 3 2
Credits (46) (63)
Domestic Production Activities Deduction (19) (5)
Permanent Differences 4 5
Effect of U.S. Tax Law Changes (35% to 21%) 49 0
Other 16 (7)
Total Federal and State Income Taxes 163 2
Accrued Interest or Penalties Related to Uncertain Tax Positions $ 0 $ 0