Annual report pursuant to Section 13 and 15(d)

Income Taxes (Reconciliation Of Effective Tax Rate, By Percentage) (Details)

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Income Taxes (Reconciliation Of Effective Tax Rate, By Percentage) (Details)
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Income Taxes [Abstract]    
Tax at U.S. statutory rate 21.00% 35.00%
Surtax exemption   (0.20%)
State income taxes, net of federal benefit (0.60%) 0.50%
Foreign income taxes, net of foreign tax credits (4.40%) (12.80%)
Other nondeductible items (0.60%) (1.00%)
Effect of increase in uncertain tax positions (0.30%) 1.50%
Change in valuation allowance (20.30%) 3.10%
Change in federal deferred tax rate   (25.70%)
Expense of prior year tax receivable (3.90%)  
Other 2.80% (0.10%)
Effective tax rate (6.30%) 0.30%