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, 2015
Dec. 31, 2014
Dec. 31, 2013
Income Taxes [Abstract]      
Tax at U.S. statutory rate 35.00% 35.00% 35.00%
Surtax exemption (1.10%) (0.70%) (5.40%)
State income taxes, net of federal benefit 0.60% 1.00% 19.10%
Foreign income taxes, net of foreign tax credits (3.60%) 7.80% 3.30%
Impairment of goodwill     116.20%
Other nondeductible items 0.00% 3.10% 4.90%
Effect of (decrease) increase in uncertain tax positions (1.40%) (10.20%) 7.30%
Federal credits 15.10%    
Change in valuation allowance (35.20%)    
Other (2.20%) 2.30% 6.40%
Effective tax rate 7.20% 38.30% 186.80%